Question 1

Which of the following best describes the primary function of enzymes in cellular metabolism?

Accepted Answer

They lower the activation energy of reactions, thereby increasing the rate of metabolic processes.

Question 2

A student is studying the process of cellular respiration. Which of the following equations correctly represents the overall process of aerobic cellular respiration?

Accepted Answer

$$\mathrm{C}_6\mathrm{H}_{12}\mathrm{O}_6 + 6\ \mathrm{O}_2 ightarrow 6\ \mathrm{CO}_2 + 6\ \mathrm{H}_2\mathrm{O} + 	ext{energy}$$

Question 3

Which of the following best explains why taking notes by hand is recommended for learning in BIO 161?

Accepted Answer

Taking notes by hand has been shown to increase retention and understanding of material.

Question 4

During DNA replication, which enzyme is primarily responsible for synthesizing the new DNA strand by adding nucleotides to the growing chain?

Accepted Answer

DNA polymerase

Question 5

A mutation occurs in a gene that codes for a protein involved in cell cycle regulation. Which of the following outcomes is most likely if this mutation leads to a nonfunctional protein?

Accepted Answer

The cell may lose control over division, potentially leading to uncontrolled cell growth.

Question 6

Which of the following statements about gene expression is correct?

Accepted Answer

Gene expression involves the transcription of DNA into RNA and the translation of RNA into protein.

Question 7

A researcher is analyzing a pedigree for a genetic disorder that follows Mendelian inheritance. If both parents are heterozygous for a recessive allele, what is the probability that their child will be homozygous recessive?

Accepted Answer

$$\frac{1}{4}$$

Question 8

Which of the following best describes the Central Dogma of molecular biology?

Accepted Answer

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

Question 9

Which of the following is a real-world example of how understanding cell membrane structure is important in medicine?

Accepted Answer

Designing antibiotics that disrupt bacterial cell membranes to kill bacteria.

Question 10

A student is comparing photosynthesis and cellular respiration. Which of the following statements is correct?

Accepted Answer

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

Question 11

Which of the following best explains why it is important to study actively rather than passively in BIO 161?

Accepted Answer

Active studying, such as drawing diagrams and answering questions, promotes deeper understanding and retention.

Question 12

Which of the following is a correct application of the concept of experimental controls in cell and molecular biology?

Accepted Answer

Using a group of cells that does not receive the experimental treatment to compare with the treated group.

Question 13

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

Accepted Answer

$$6\ \mathrm{CO}_2 + 6\ \mathrm{H}_2\mathrm{O} + 	ext{light energy} ightarrow \mathrm{C}_6\mathrm{H}_{12}\mathrm{O}_6 + 6\ \mathrm{O}_2$$

Question 14

A scientist is studying a protein that catalyzes the breakdown of hydrogen peroxide into water and oxygen. Which term best describes this protein?

Accepted Answer

Enzyme

Question 15

Which of the following best describes the role of nucleic acids in cells?

Accepted Answer

They store and transmit genetic information.

Question 16

A patient is diagnosed with a genetic disorder caused by a mutation in a single gene. Which of the following techniques would be most appropriate to identify the specific mutation?

Accepted Answer

DNA sequencing

Question 17

Which of the following is an example of how gene expression can be regulated in eukaryotic cells?

Accepted Answer

By controlling the rate of transcription through the use of transcription factors.

Question 18

A student is designing an experiment to test the effect of a new drug on cell division. Which of the following steps is essential for ensuring the validity of the experiment?

Accepted Answer

Including a control group that does not receive the drug.

Question 19

Which of the following best explains why understanding the structure and function of macromolecules is essential for studying cell and molecular biology?

Accepted Answer

The structure of macromolecules determines their function in cellular processes.

BIO 161: Introduction to Cell & Molecular Biology – Syllabus and Study Guide

Study Guide - Practice Questions

Study Guide - Flashcards