Question 1

Which of the following best describes the primary purpose of cellular respiration in living organisms?

Accepted Answer

To break down glucose and other molecules to release energy for cellular work.

Question 2

A patient is diagnosed with a genetic disorder that affects the structure of their cell membranes. Which cellular process is most likely to be directly impaired?

Accepted Answer

Selective transport of substances into and out of the cell.

Question 3

Which of the following equations correctly represents the process of photosynthesis?

Accepted Answer

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

Question 4

During a marathon, a runner's muscle cells switch from aerobic to anaerobic respiration. What is the primary reason for this metabolic shift?

Accepted Answer

Insufficient oxygen supply to the muscle cells.

Question 5

Which of the following best explains why water is considered a polar molecule?

Accepted Answer

It has a bent shape and unequal sharing of electrons between oxygen and hydrogen.

Question 6

A scientist is studying the inheritance of a genetic trait in fruit flies. Which of the following best describes the process by which traits are passed from one generation to the next?

Accepted Answer

Traits are determined by genes located on chromosomes, which are inherited from both parents.

Question 7

Which of the following is a correct statement about enzymes?

Accepted Answer

Enzymes lower the activation energy required for a reaction to occur.

Question 8

A person is exposed to a virus and their immune system responds by producing antibodies. Which type of biological molecule are antibodies?

Accepted Answer

Proteins

Question 9

Which of the following best describes the function of mitochondria in eukaryotic cells?

Accepted Answer

They are the site of cellular respiration and ATP production.

Question 10

A student mixes hydrochloric acid ($$HCl) $$with sodium hydroxide ($$NaOH) in a $$beaker. Which type of reaction occurs, and what is the balanced chemical equation?

Accepted Answer

Neutralization; $$HCl + NaOH \rightarrow NaCl + H_2O$$

Question 11

Which of the following scenarios best illustrates the concept of homeostasis in the human body?

Accepted Answer

A person sweats to cool down when their body temperature rises.

Question 12

Which of the following statements about DNA is correct?

Accepted Answer

DNA stores genetic information in the sequence of its nucleotide bases.

Question 13

A population of bacteria is exposed to an antibiotic. After several generations, most of the bacteria are resistant to the antibiotic. Which biological process best explains this observation?

Accepted Answer

Natural selection

Question 14

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

Accepted Answer

They synthesize proteins by linking amino acids together.

Question 15

A person with type 1 diabetes cannot produce insulin. What is the primary consequence of this condition?

Accepted Answer

The body cannot regulate blood glucose levels effectively.

Question 16

Which of the following is a correct example of osmosis?

Accepted Answer

Movement of water from an area of low solute concentration to high solute concentration across a semipermeable membrane.

Question 17

Which of the following best explains why enzymes are specific to the reactions they catalyze?

Accepted Answer

The shape of the enzyme's active site matches only specific substrate molecules.

Question 18

A student is asked to explain the difference between prokaryotic and eukaryotic cells. Which statement is correct?

Accepted Answer

Eukaryotic cells contain membrane-bound organelles, while prokaryotic cells do not.

Question 19

Which of the following best describes the function of chlorophyll in photosynthesis?

Accepted Answer

It absorbs light energy needed to drive the reactions of photosynthesis.

Question 20

A scientist discovers a new organism that is unicellular, lacks a nucleus, and has a cell wall. To which domain does this organism most likely belong?

Accepted Answer

Bacteria

BIOL 1001: General Biology Syllabus and Course Policies (Fall 2025)

Study Guide - Practice Questions

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