Question 1

Which of the following best explains why compartmentalization (organelles) in eukaryotic cells is advantageous compared to prokaryotic cells?

Accepted Answer

It allows for simultaneous but incompatible metabolic processes to occur in separate areas.

Question 2

A scientist discovers a new molecule that is amphipathic. Which of the following best describes how this molecule would behave in water?

Accepted Answer

It would arrange itself so that its hydrophilic region faces water and its hydrophobic region is shielded from water.

Question 3

Which of the following is the correct summary equation for cellular respiration?

Accepted Answer

$$\mathrm{C_6H_{12}O_6$ + 6O_2 \rightarrow 6CO_2 + 6H_2O + Energy}$$

Question 4

Which of the following best describes the role of the Golgi apparatus in a eukaryotic cell?

Accepted Answer

It modifies, sorts, and packages proteins and lipids for secretion or delivery to other organelles.

Question 5

A mutation causes a cell to produce a nonfunctional sodium-potassium pump. Which of the following is a likely consequence?

Accepted Answer

The cell will be unable to maintain its resting membrane potential, disrupting nerve impulse transmission.

Question 6

Which of the following statements about enzymes is correct?

Accepted Answer

Enzymes lower the activation energy of a reaction, increasing the reaction rate.

Question 7

Which of the following best describes the difference between competitive and non-competitive enzyme inhibition?

Accepted Answer

Competitive inhibitors bind to the active site, while non-competitive inhibitors bind to a different site on the enzyme.

Question 8

During which stage of the cell cycle does DNA replication occur?

Accepted Answer

S phase

Question 9

Which of the following best explains why water is an excellent solvent for ionic compounds?

Accepted Answer

Water is a polar molecule, so it can surround and separate ions due to its partial positive and negative charges.

Question 10

Which of the following is a correct statement about the structure of DNA?

Accepted Answer

DNA is a double helix with antiparallel strands held together by hydrogen bonds between complementary bases.

Question 11

Which of the following best describes the process of osmosis?

Accepted Answer

The movement of water across a selectively permeable membrane from an area of low solute concentration to high solute concentration.

Question 12

Which of the following is true about the relationship between photosynthesis and cellular respiration?

Accepted Answer

Photosynthesis stores energy in glucose molecules, while cellular respiration releases energy from glucose.

Question 13

Which of the following best describes the function of ribosomes in a cell?

Accepted Answer

They synthesize proteins by translating mRNA.

Question 14

A patient is diagnosed with a genetic disorder that affects the structure of collagen, a major extracellular matrix protein. Which cellular structure is most likely to be directly affected?

Accepted Answer

The extracellular matrix (ECM)

Question 15

Which of the following best describes the difference between saturated and unsaturated fatty acids?

Accepted Answer

Saturated fatty acids have no double bonds between carbon atoms, while unsaturated fatty acids have one or more double bonds.

Question 16

Which of the following is a correct description of the central dogma of molecular biology?

Accepted Answer

DNA is transcribed into RNA, which is then translated into protein.

Question 17

Which of the following best explains why crossing over during meiosis increases genetic variation?

Accepted Answer

It results in the exchange of genetic material between homologous chromosomes, creating new allele combinations.

Question 18

Which of the following is a correct statement about Mendel's law of independent assortment?

Accepted Answer

Alleles of different genes assort independently of one another during gamete formation.

Question 19

Which of the following best describes the function of tRNA during translation?

Accepted Answer

It brings the correct amino acid to the ribosome based on the codon in the mRNA.

General Biology I: Structured Study Guide Notes (Chapters 1–17)

Study Guide - Practice Questions

Study Guide - Flashcards