Question 1

If an amino acid contained a hydrocarbon (a group of multiple carbons and hydrogens linked together) as its side group, in which of the following categories could it be appropriately designated?

Accepted Answer

Answer reason: Amino acids with these R groups are classified as hydrophobic and tend to be buried in the interior of folded proteins to minimize contact with aqueous environments. Polar/hydrophilic categories require electronegative atoms (e.g., O, N, S) capable of hydrogen bonding, which a pure hydrocarbon lacks. Basic and acidic classifications depend on ionizable functional groups that can accept or donate protons, not on a simple hydrocarbon chain.

Question 2

What is the type of weak bond between the hydrogen of one molecule and the nitrogen of another molecule, where the two don't actively share an electron?

Accepted Answer

Answer reason: This fits the stem because the atoms do not share electrons directly; instead the interaction is an electrostatic attraction. Ionic and covalent bonds involve true electron transfer or sharing, making them stronger and not described as a weak interaction here. Disulfide bonds are covalent S–S links between cysteines, and “hydrophobic bond” is not a true bond type but a nonpolar aggregation effect.

Question 3

Which of the following statements about the atom 12/6 C is FALSE?

Accepted Answer

Answer reason: In nuclide notation, the atomic number (6) equals the number of protons, and the mass number (12) equals protons plus neutrons. Therefore neutrons = 12 − 6 = 6, so stating there are 12 neutrons is incorrect. A neutral carbon-12 atom will have 6 electrons to balance 6 protons, making the electron statement consistent. The atomic number being 6 and the mass/atomic weight being about 12 are also consistent with carbon-12.

Question 4

A scientist wants to perform a test that will indicate whether a nucleic acid sample is composed of RNA or DNA. Testing for the presence of which of the following is most appropriate in this situation?

Accepted Answer

Answer reason: Phosphate and nitrogen are components of both nucleic acids, so they cannot differentiate between them. Guanine is also present in both RNA and DNA, making it a poor discriminator. Detecting uracil therefore directly indicates RNA in the sample and best answers the question’s goal of distinguishing RNA from DNA.

Question 5

The advantage of the pentose phosphate pathway is that it produces all of the following EXCEPT?

Accepted Answer

Answer reason: The pentose phosphate pathway’s key roles are generating reducing power (NADPH) and producing ribose-5-phosphate for nucleotide synthesis, rather than directly producing ATP. Its oxidative phase yields NADPH, supporting biosynthesis and protection against oxidative stress, and its non-oxidative phase interconverts sugars that can feed into glycolysis/gluconeogenesis. Intermediates such as fructose-6-phosphate and glyceraldehyde-3-phosphate can be used to regenerate glucose, and erythrose-4-phosphate contributes to aromatic amino acid biosynthesis in many organisms. ATP production is a function of glycolysis and oxidative phosphorylation, not a primary product of the pentose phosphate pathway.

Question 6

Which of the following statements is FALSE?

Accepted Answer

Answer reason: Hydrolysis is a reaction in which water is consumed to break chemical bonds (commonly splitting polymers into monomers), rather than being produced. In contrast, dehydration (condensation) synthesis forms a bond by removing a water molecule, so water is generated as a product. The other statements are consistent with core water properties: water’s polarity helps dissolve ionic salts, ice forms at the surface first due to density changes, and water is indeed polar. Therefore, the statement claiming water is formed by hydrolysis is the false one.

Question 7

Which of the following statements regarding protein structure is FALSE?

Accepted Answer

Answer reason: Tertiary protein structure is stabilized by multiple types of interactions among side chains, not exclusively covalent ones. In addition to disulfide bonds, it commonly includes hydrogen bonding, ionic (salt-bridge) interactions, hydrophobic interactions, and van der Waals forces. Therefore, restricting tertiary structure formation to only covalent bonds makes the statement false. A common trap is to overemphasize disulfide bonds; while important in some proteins, they are only one contributor to tertiary folding.

Question 8

Which of the following statements regarding the glycolysis pathway is FALSE?

Accepted Answer

Answer reason: Glycolysis has an energy investment phase that requires ATP to phosphorylate glucose and its intermediates before energy payoff occurs. Specifically, 2 ATP are consumed early (hexokinase/glucokinase and phosphofructokinase-1 steps), not 1. The pathway later generates 4 ATP via substrate-level phosphorylation for a net gain of 2 ATP per glucose. It also produces 2 NADH and ends with 2 pyruvate, and dehydration during enolase yields a net production of 2 water molecules per glucose.

Question 9

Radioisotopes are frequently used to label molecules in a cell. The fate of atoms and molecules in a cell can then be followed. Assume Saccharomyces cerevisiae is grown in a nutrient medium containing the radioisotope 32P. After a 48-hour incubation, the majority of the 32P would be found in the S. cerevisiae's?

Accepted Answer

Answer reason: Phosphorus from phosphate is incorporated broadly into intracellular biomolecules, especially through phosphorylation reactions that regulate enzyme activity and signaling. Over a 48-hour growth period, rapidly turning-over phosphate groups are extensively added to and removed from amino acid residues in cellular proteins, leading to substantial label accumulation in the protein pool. In contrast, the yeast cell wall is mainly polysaccharides (glucans, mannans) with minimal phosphate content, and carbohydrates generally lack phosphorus unless specifically phosphorylated intermediates. Water does not incorporate phosphate as a stable structural component, and membrane phospholipids do contain phosphorus but typically represent a smaller labeled pool than the total cellular proteins undergoing continual phosphorylation.

Question 10

Which of the following is the best definition of oxidative phosphorylation?

Accepted Answer

Answer reason: Oxidative phosphorylation is defined by chemiosmosis: the electron transport chain creates a proton motive force, and ATP synthase uses the energy of proton flow down this gradient to form ATP from ADP + Pi. This option explicitly describes proton gradient-driven ATP generation through transmembrane channels (ATP synthase), which is the core mechanism. Option A describes electron transfer to oxygen (the terminal electron acceptor in aerobic respiration) but omits the defining coupling to ATP synthesis via the proton gradient. Option C is substrate-level phosphorylation, and option D describes anaerobic respiration/fermentation-style electron transfer to an organic acceptor rather than oxidative phosphorylation.

Question 11

What role does peptidyl transferase play in protein synthesis?

Accepted Answer

Answer reason: Peptidyl transferase activity is the ribosome’s catalytic function that forms the peptide bond between the amino acid in the A site and the growing polypeptide attached to the tRNA in the P site. This reaction is carried out by rRNA within the large ribosomal subunit (a ribozyme), not a separate protein enzyme. By enabling peptide bond formation, it drives the elongation step of translation and chain growth. In contrast, ribosomal translocation along the mRNA by one codon is mediated by elongation factors (e.g., EF-G/eEF2), not by peptidyl transferase.

Question 12

The assembly of amino acids into proteins is known as what?

Accepted Answer

Answer reason: Protein synthesis specifically involves linking amino acids via peptide bonds to form polypeptides, fitting the definition of a constructive metabolic pathway. By contrast, catabolism refers to breaking down complex molecules into simpler ones to release energy. Gluconeogenesis is the production of glucose from non-carbohydrate substrates, and lipolysis is the breakdown of triglycerides into fatty acids and glycerol, neither of which describes protein assembly.

Question 13

Which of the following vitamins is also known as Retinol?

Accepted Answer

Answer reason: Vitamin A compounds (retinol, retinal, and retinoic acid) are central to vision (rhodopsin formation), epithelial differentiation, and immune function, making retinol synonymous with vitamin A in exam terminology. Vitamin D refers to calciferols (e.g., cholecalciferol), primarily involved in calcium and phosphate homeostasis, so it does not match the name retinol. Vitamin K is linked to hepatic synthesis of clotting factors via gamma-carboxylation, which is a different biochemical role and nomenclature entirely.

Question 14

A 24-year-old woman comes to the physician because of a history of severe muscle cramps and weakness on moderate exercise. She states that these episodes are occasionally followed by dark reddish/brown-colored urine, which is unrelated to her menstrual cycle. Which of the following processes is most likely to be deficient in this patient?

Accepted Answer

Answer reason: A classic cause is McArdle disease (glycogen storage disease type V), due to myophosphorylase deficiency, which prevents cleaving glycogen to glucose-1-phosphate in muscle. Without this glycogen phosphorolysis, the muscle cannot generate adequate ATP during exertion, leading to early fatigue and muscle breakdown. Hydrolysis of glucose-6-phosphate would implicate hepatic glucose release (fasting hypoglycemia) rather than exertional myoglobinuria, and lysosomal sphingolipid hydrolysis defects would present with neurovisceral storage findings instead.

Question 15

Which of the following functions in the body as the main source of stored energy, provides cell structure/function, temperature regulation, and protects organs?

Accepted Answer

Answer reason: Lipids are the body’s primary long-term energy storage macronutrient and are stored efficiently in adipose tissue. They are essential structural components of cell membranes (phospholipids) and support normal cellular function. Adipose tissue provides insulation that contributes to temperature regulation and also cushions/protects internal organs from mechanical injury. Carbohydrates are mainly for short-term energy, while proteins are primarily for tissue building/repair rather than being the main stored energy source.

Question 16

The _ is the molecule that acts as an electron carrier in cellular respiration?

Accepted Answer

Answer reason: Cellular respiration depends on reduced coenzymes that carry high-energy electrons to the electron transport chain to drive oxidative phosphorylation. NADH is the primary soluble electron carrier generated during glycolysis, pyruvate oxidation, and the citric acid cycle, and it donates electrons to Complex I. ATP is an energy currency rather than an electron carrier, and glucose is the fuel substrate being oxidized. FAD is also an electron carrier, but it is typically enzyme-bound (as FADH2) and is not the best single answer when asked generally for the electron carrier in cellular respiration.

Question 17

Vitamin K is essential for –?

Accepted Answer

Answer reason: Without adequate vitamin K, factors II, VII, IX, and X (and proteins C and S) are produced in an undercarboxylated, less functional form, increasing bleeding risk and prolonging PT/INR. This directly makes coagulation the key physiologic role being tested. A common distractor is vision, which is primarily linked to vitamin A rather than vitamin K.

Question 18

Which vitamin is known as Retinol?

Accepted Answer

Answer reason: The question is testing vitamin nomenclature, where retinol specifically corresponds to vitamin A rather than other vitamin classes. In contrast, vitamin B12 is cobalamin, vitamin C is ascorbic acid, and vitamin D refers to calciferols (e.g., cholecalciferol). Recognizing these common biochemical names helps link deficiencies/toxicities to the correct vitamin in clinical contexts.

Question 19

The major interaction responsible for stabilizing plasma membrane?

Accepted Answer

Answer reason: This interaction provides the dominant energetic contribution to membrane integrity in aqueous environments. Hydrophilic interactions help orient polar head groups toward water but do not chiefly stabilize the bilayer core. Covalent and ionic bonds are not the main forces holding the lipid bilayer together; membrane structure relies largely on noncovalent packing and the hydrophobic effect.

Question 20

The human body does not produce?

Accepted Answer

Answer reason: Minerals (e.g., iron, calcium, iodine, zinc) are inorganic elements that must be obtained from the diet and absorbed to meet physiologic needs. In contrast, enzymes are proteins produced by cells via gene transcription/translation, proteins are assembled from amino acids, and many hormones are synthesized by endocrine glands from amino acid or cholesterol precursors. Therefore the only listed substance the body does not produce is the inorganic mineral elements.

Question 21

Glucose is a type of –?

Accepted Answer

Answer reason: Chemically it is a six-carbon aldose sugar that is absorbed from the gut and transported in blood for energy production via glycolysis and oxidative phosphorylation. Vitamins are micronutrients that do not provide calories, whereas glucose is calorie-yielding and directly metabolized for ATP. Fats and proteins are distinct macronutrients with different structures and metabolic pathways, making them incorrect classifications here.

Question 22

Vitamin B6 is also called?

Accepted Answer

Answer reason: Vitamin B6 refers to the pyridoxine family (including pyridoxal and pyridoxamine), which are converted to pyridoxal phosphate, a key coenzyme in amino acid metabolism and neurotransmitter synthesis. The other options are distinct vitamins: niacin is B3, folic acid is B9, and biotin is B7. Therefore, identifying the correct synonym depends on recognizing standard vitamin-number equivalences.

Question 23

Which amino acid is not typically found in proteins?

Accepted Answer

Answer reason: Proteins are polymers built from amino acids linked by peptide bonds, so a correct option must identify something that is not an amino acid used in protein synthesis. Tryptophan, arginine, and histidine are standard amino acids incorporated into proteins during translation. Glucose is a carbohydrate monosaccharide and does not serve as a protein building block. A common confusion is mixing nutrient categories (sugars vs amino acids), but only amino acids are directly polymerized into proteins.

Question 24

A double-stranded RNA genome isolated from a virus was found to contain 15% uracil. What percentage of guanine should exist in this virus's genome?

Accepted Answer

Answer reason: If uracil is 15%, adenine must also be 15%, making A+U = 30%. The remaining 70% must be split equally between guanine and cytosine because they pair in equal amounts in a double-stranded genome. Therefore guanine is 35%, and options suggesting much higher or lower values ignore complementarity constraints.

Question 25

Which vitamin is an antioxidant that helps protect cells from damage caused by free radicals?

Accepted Answer

Answer reason: The primary lipid-soluble chain-breaking antioxidant in human membranes is vitamin E (tocopherol), which interrupts lipid peroxidation reactions. Vitamin C is an important water-soluble antioxidant but is less central for membrane lipid protection and often regenerates oxidized vitamin E. Vitamin K’s main role is in gamma-carboxylation of clotting factors rather than free-radical scavenging.

Question 26

Which vitamin is necessary for the metabolism of carbohydrates, fats, and proteins?

Accepted Answer

Answer reason: Thiamine (B1) is converted to thiamine pyrophosphate (TPP), an essential cofactor for oxidative decarboxylation of alpha-ketoacids (e.g., pyruvate dehydrogenase, alpha-ketoglutarate dehydrogenase) and for transketolase in the pentose phosphate pathway, placing it centrally in carbohydrate metabolism and downstream ATP generation. Because carbohydrate oxidation supplies acetyl-CoA and reducing equivalents that integrate with fat oxidation and overall energy production, deficiency disrupts broad macronutrient utilization (classically causing beriberi/Wernicke-Korsakoff). A common distractor is B6, which is important for amino acid metabolism, but it is not the primary cofactor broadly linking carbohydrate oxidation to overall energy pathways in the way B1 does.

Question 27

Carbohydrates are used in ...?

Accepted Answer

Answer reason: g., pectin, gums, cellulose derivatives). These properties make them central to food formulation, texture, and preservation. While carbohydrate polymers can also appear in textiles, cosmetics, and paints, those uses are more specialized compared with their ubiquitous role in foods. Therefore, the best single answer is the industry most broadly and directly dependent on carbohydrates as ingredients.

Question 28

Both, haemoglobin and myoglobin require ____ for formation?

Accepted Answer

Answer reason: Iron is therefore an essential structural component required for synthesis of functional heme, and without it these proteins cannot be properly formed. Vitamin B12 supports DNA synthesis and erythropoiesis but is not a direct structural requirement for heme formation. Calcium and vitamin A have no direct role in the heme moiety needed for oxygen binding in these globins.

Question 29

Which of the following vitamins helps in blood clotting?

Accepted Answer

Answer reason: This vitamin is essential for factors II, VII, IX, and X (and proteins C and S), so deficiency leads to impaired clot formation and bleeding tendency. In contrast, vitamin C mainly supports collagen synthesis and capillary integrity rather than the coagulation cascade itself. Therefore the vitamin most directly responsible for normal blood clotting is the one required to activate key clotting factors.

Question 30

What is the final product of glycolysis?

Accepted Answer

Answer reason: The pathway’s terminal step produces pyruvate from phosphoenolpyruvate via pyruvate kinase. Acetyl-CoA is formed after glycolysis when pyruvate is oxidatively decarboxylated by the pyruvate dehydrogenase complex in mitochondria. Lactic acid is not the intrinsic end product of glycolysis; it is produced from pyruvate during anaerobic conditions to regenerate NAD+ for continued glycolytic flux.

Question 31

The nurse instructs a primigravid client to increase her intake of foods high in magnesium because of its role with which of the following?

Accepted Answer

Answer reason: Magnesium is a key intracellular cation that acts as a cofactor for many enzymes, especially those involved in ATP-dependent reactions. This makes it essential for biosynthetic processes such as protein synthesis and the formation of nucleic acids and lipids, which are critical during pregnancy for maternal and fetal growth. Bone mineralization is more directly tied to calcium, phosphate, and vitamin D balance, making that option a common distractor. While magnesium participates in multiple metabolic pathways, the broad, high-yield role emphasized in nutrition teaching is its cofactor function supporting major macromolecule synthesis.

Question 32

Which element has the highest electronegativity?

Accepted Answer

Answer reason: It increases across a period (left to right) and increases up a group due to higher effective nuclear charge and smaller atomic radius. Fluorine sits at the top-right of the periodic table (excluding noble gases), giving it the strongest pull on bonding electrons. Oxygen and nitrogen are also highly electronegative but are lower than fluorine, while chlorine is lower because it is larger and in a lower period.

Question 33

Which process describes the breakdown of proteins for energy?

Accepted Answer

Answer reason: Proteolysis is the specific process of degrading proteins into smaller peptides and amino acids, which is the required first step in using protein as an energy source. Glycolysis refers to glucose breakdown, and lipolysis refers to triglyceride breakdown, so neither directly describes protein breakdown. Gluconeogenesis is the synthesis of glucose from non-carbohydrate precursors rather than the process of protein breakdown itself.

Question 34

Which type of biomolecule is the main energy source for cells?

Accepted Answer

Answer reason: Carbohydrates are readily mobilized and directly feed into these core energy-generating reactions, making them the primary day-to-day fuel for most tissues. Lipids are a major long-term energy store and yield more ATP per gram but require beta-oxidation and are not the quickest default fuel in many settings. Proteins are mainly structural/functional and are typically used for energy only when carbohydrate availability is low or during catabolic states, while nucleic acids are not used as an energy source.

Question 35

In DNA, which nitrogenous base always pairs with Cytosine?

Accepted Answer

Answer reason: Cytosine is a pyrimidine that forms three hydrogen bonds with guanine, making this pairing consistent and stable in DNA. Adenine instead pairs with thymine via two hydrogen bonds, so it cannot be the complement of cytosine. Uracil is primarily found in RNA rather than DNA, making it an incorrect choice here.

Question 36

In DNA, which nitrogenous base always pairs with Cytosine?

Accepted Answer

Answer reason: DNA base-pairing follows complementary hydrogen-bond rules: purines pair with pyrimidines to maintain a uniform helix width. Cytosine is a pyrimidine that forms three hydrogen bonds with its complementary purine partner. This specific bonding pattern stabilizes the double helix and is consistently used during DNA replication and repair to preserve genetic fidelity. A common distractor is adenine, which instead pairs with thymine (two hydrogen bonds), while uracil is characteristic of RNA rather than DNA.

Question 37

The metallic component of chlorophyll?

Accepted Answer

Answer reason: The molecule’s tetrapyrrole ring chelates a divalent cation, and in chlorophyll that cation is magnesium. This is analogous to heme, where iron is the central metal, but in plants chlorophyll specifically uses magnesium. The other options are elements present in biomolecules (C, N) or relevant as micronutrients (Mn) but they are not the central coordinated metal in chlorophyll.

Question 38

Which biomolecule is the primary energy storage molecule in animals?

Accepted Answer

Answer reason: This makes them far more efficient for sustained energy reserves than carbohydrates, which bind substantial water and yield ~4 kcal/g. Glycogen serves as a short-term, readily mobilizable carbohydrate store in liver and muscle rather than the main depot for energy. Protein is not a preferred storage molecule because using it for energy compromises essential structural and enzymatic functions, while glucose is primarily an immediate fuel and circulating substrate.

Question 39

Which type of RNA carries amino acids to the ribosome during protein synthesis?

Accepted Answer

Answer reason: Transfer RNA performs this role by being charged with a specific amino acid and using its anticodon to base-pair with the mRNA codon. This delivers the correct amino acid to the growing polypeptide chain for peptide bond formation. In contrast, mRNA provides the genetic template and rRNA forms the ribosomal structural/catalytic core rather than transporting amino acids.

Question 40

In DNA replication, which nitrogenous base always pairs with Cytosine?

Accepted Answer

Answer reason: Cytosine is a pyrimidine that forms three hydrogen bonds specifically with the purine guanine, providing stable pairing during replication. Adenine pairs with thymine in DNA (two hydrogen bonds), making it an incorrect match for cytosine. Uracil is primarily found in RNA rather than DNA, so it does not pair with cytosine in DNA replication.

Question 41

In DNA replication, which nitrogenous base always pairs with Cytosine?

Accepted Answer

Answer reason: Cytosine (a pyrimidine) forms three hydrogen bonds with guanine (a purine), making this pairing stable and obligatory during DNA replication. Adenine instead pairs with thymine in DNA, not with cytosine. Uracil is primarily found in RNA (replacing thymine) and is not a standard DNA base in replication.

Question 42

Which of the following nitrogenous bases is found in RNA but NOT in DNA?

Accepted Answer

Answer reason: RNA uses uracil as its pyrimidine base, whereas DNA uses thymine in its place. This base substitution is a defining chemical difference between RNA and DNA and affects base-pairing rules (A pairs with U in RNA and with T in DNA). Adenine and guanine are present in both nucleic acids, so they cannot distinguish RNA from DNA. Thymine is the DNA-specific base, making it the opposite of what the question asks.

Question 43

Which of the following molecules acts as the primary "energy currency" of the cell?

Accepted Answer

Answer reason: ATP fulfills this role because hydrolysis of its high-energy phosphate bonds rapidly provides free energy for processes like active transport, biosynthesis, and muscle contraction. In contrast, glucose is mainly a fuel molecule that must be metabolized through pathways such as glycolysis and oxidative phosphorylation to generate usable cellular energy. DNA stores genetic information, and phospholipids primarily serve structural roles in membranes rather than acting as the direct energy currency.

Question 44

Which type of biomolecule is the main component of cell membranes?

Accepted Answer

Answer reason: This lipid bilayer provides the fundamental structure and permeability properties of the membrane. Proteins are abundant and crucial for transport, signaling, and structural support, but they are embedded in or associated with the lipid scaffold rather than forming the core matrix. Carbohydrates mainly appear as glycoproteins/glycolipids on the outer surface for recognition, and nucleic acids are not structural components of membranes.

Question 45

Which of the following is a product of the light-dependent reactions in photosynthesis?

Accepted Answer

Answer reason: Electrons excited in photosystem I reduce NADP+ to NADPH, which is then used in the Calvin cycle to drive carbon fixation. By contrast, glucose is produced in the light-independent reactions (Calvin cycle), not directly in the light-dependent stage. Carbon dioxide and water are reactants in photosynthesis overall; water is split during photolysis and CO2 is fixed later, so neither is a product of the light-dependent reactions.

Question 46

In DNA replication, which enzyme is responsible for "unzipping" the double helix?

Accepted Answer

Answer reason: The enzyme that performs this strand separation works by breaking the hydrogen bonds between complementary base pairs at the replication fork, using ATP to drive the process. This creates single-stranded DNA for downstream synthesis machinery to copy. In contrast, DNA polymerase primarily extends a new strand by adding nucleotides, and ligase seals nicks between fragments rather than opening the helix.

Question 47

In DNA replication, which enzyme is responsible for "unzipping" the double helix?

Accepted Answer

Answer reason: The enzyme that performs this strand separation using ATP-dependent unwinding activity is helicase. DNA polymerase instead synthesizes new DNA by adding nucleotides to a primer and cannot initiate strand unwinding. Ligase seals nicks between Okazaki fragments, and primase lays down RNA primers, so neither fits the “unzipping” step.

Train with a large NCLEX question bank and jump into a full exam-style simulator

Biochemistry NCLEX Practice Test

Continue Learning

If an amino acid contained a hydrocarbon (a group of multiple carbons and hydrogens linked together) as its side group, in which of the following categories could it be appropriately designated?

What is the type of weak bond between the hydrogen of one molecule and the nitrogen of another molecule, where the two don't actively share an electron?

Which of the following statements about the atom 12/6 C is FALSE?

A scientist wants to perform a test that will indicate whether a nucleic acid sample is composed of RNA or DNA. Testing for the presence of which of the following is most appropriate in this situation?

The advantage of the pentose phosphate pathway is that it produces all of the following EXCEPT?

Which of the following statements is FALSE?

Which of the following statements regarding protein structure is FALSE?

Which of the following statements regarding the glycolysis pathway is FALSE?

Which of the following is the best definition of oxidative phosphorylation?

What role does peptidyl transferase play in protein synthesis?

The assembly of amino acids into proteins is known as what?

Which of the following vitamins is also known as Retinol?

Which of the following functions in the body as the main source of stored energy, provides cell structure/function, temperature regulation, and protects organs?

The _ is the molecule that acts as an electron carrier in cellular respiration?

Vitamin K is essential for –?

Which vitamin is known as Retinol?

The major interaction responsible for stabilizing plasma membrane?

The human body does not produce?

Glucose is a type of –?

Vitamin B6 is also called?

Which amino acid is not typically found in proteins?

A double-stranded RNA genome isolated from a virus was found to contain 15% uracil. What percentage of guanine should exist in this virus's genome?

Which vitamin is an antioxidant that helps protect cells from damage caused by free radicals?

Which vitamin is necessary for the metabolism of carbohydrates, fats, and proteins?

Carbohydrates are used in ...?

Both, haemoglobin and myoglobin require ____ for formation?

Which of the following vitamins helps in blood clotting?

What is the final product of glycolysis?

The nurse instructs a primigravid client to increase her intake of foods high in magnesium because of its role with which of the following?

Which element has the highest electronegativity?

Which process describes the breakdown of proteins for energy?

Which type of biomolecule is the main energy source for cells?

In DNA, which nitrogenous base always pairs with Cytosine?

In DNA, which nitrogenous base always pairs with Cytosine?

The metallic component of chlorophyll?

Which biomolecule is the primary energy storage molecule in animals?

Which type of RNA carries amino acids to the ribosome during protein synthesis?

In DNA replication, which nitrogenous base always pairs with Cytosine?

In DNA replication, which nitrogenous base always pairs with Cytosine?

Which of the following nitrogenous bases is found in RNA but NOT in DNA?

Which of the following molecules acts as the primary "energy currency" of the cell?

Which type of biomolecule is the main component of cell membranes?

Which of the following is a product of the light-dependent reactions in photosynthesis?

In DNA replication, which enzyme is responsible for "unzipping" the double helix?

In DNA replication, which enzyme is responsible for "unzipping" the double helix?

Think you’re ready for the NCLEX?

Leave a Reply Cancel reply