Question 1

Which of the following best describes the difference between covalent and ionic bonds in biological macromolecules?

Accepted Answer

Covalent bonds involve the sharing of electrons between atoms, while ionic bonds involve the transfer of electrons from one atom to another.

Question 2

A patient is diagnosed with familial hypercholesterolemia, a disorder affecting cholesterol transport. Which biological macromolecule is most directly involved in this condition?

Accepted Answer

Lipids

Question 3

Which of the following equations correctly represents the Michaelis-Menten equation for enzyme kinetics?

Accepted Answer

$$V = V_\max \cdot \frac{[S]}{K_m + [S]}$$

Question 4

A mutation causes a substitution of a single nucleotide in a gene, resulting in a different amino acid in the protein. What type of mutation is this?

Accepted Answer

Missense mutation

Question 5

Which process is responsible for the synthesis of ATP in mitochondria during cellular respiration?

Accepted Answer

Electron transport chain and oxidative phosphorylation

Question 6

A researcher is studying the inheritance of blood types in humans. Which genetic principle explains the presence of AB blood type?

Accepted Answer

Codominance

Question 7

Which of the following best describes the function of the sodium-potassium pump in animal cells?

Accepted Answer

It uses ATP to actively transport sodium out of the cell and potassium into the cell.

Question 8

Which of the following is a correct description of the Hardy-Weinberg equilibrium equation for allele frequencies?

Accepted Answer

$$p^2 + 2pq$$ + $$q^2 = 1$

Question 9

A patient with Type 1 Diabetes Mellitus is unable to produce insulin. Which organ system is primarily affected?

Accepted Answer

Endocrine system

Question 10

Which of the following best explains the role of the blood-brain barrier (BBB)?

Accepted Answer

It restricts the passage of certain substances from the blood into the brain, protecting neural tissue.

Question 11

Which of the following is a function of the lymphatic system?

Accepted Answer

Absorbing dietary fats from the intestine

Question 12

A scientist is analyzing the structure of a virus. Which component is essential for viral attachment to host cells?

Accepted Answer

Capsid proteins

Question 13

Which of the following is a correct statement about gene expression in eukaryotes?

Accepted Answer

Transcription occurs in the nucleus, and translation occurs in the cytoplasm.

Question 14

Which of the following is a primary function of the nephron in the kidney?

Accepted Answer

Filtration and reabsorption of blood to form urine

Question 15

A patient is exposed to an allergen and develops hives. Which type of immune response is this?

Accepted Answer

Type I hypersensitivity reaction

Question 16

Which of the following best describes the process of PCR (Polymerase Chain Reaction)?

Accepted Answer

It amplifies specific DNA sequences using repeated cycles of heating and cooling.

Question 17

Which of the following is a correct description of the Bohr effect in hemoglobin?

Accepted Answer

Hemoglobin's affinity for oxygen decreases as pH decreases.

Question 18

Which of the following is a real-world example of incomplete dominance in genetics?

Accepted Answer

Pink flowers resulting from crossing red and white snapdragons

Question 19

Which of the following best describes the function of G-protein coupled receptors (GPCRs) in cell signaling?

Accepted Answer

They activate intracellular signaling cascades via G-proteins when a ligand binds.

Question 20

Which of the following is a correct statement about the process of photosynthesis in plants?

Accepted Answer

Photosynthesis occurs in the chloroplasts and produces glucose and O$$_2.$$

General Biology Study Guide for Korean Medicine

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