Question 1

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

Accepted Answer

It packages and modifies proteins for secretion or use within the cell.

Question 2

Which equation represents the overall process of aerobic cellular respiration?

Accepted Answer

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

Question 3

During the electron transport chain in aerobic respiration, what is the final electron acceptor?

Accepted Answer

Oxygen ($$\mathrm{O_2$})$$

Question 4

Which process is responsible for the movement of water across a semi-permeable membrane from high water concentration to low water concentration?

Accepted Answer

Osmosis

Question 5

A cell placed in a hypertonic solution will:

Accepted Answer

Shrink as water leaves the cell

Question 6

Which of the following is a correct description of competitive inhibition in enzyme activity?

Accepted Answer

A molecule resembling the substrate binds to the active site, preventing the substrate from binding.

Question 7

Which functional group is commonly found in amino acids and is responsible for their basic properties?

Accepted Answer

-NH2

Question 8

What is the phenotypic ratio expected from a dihybrid cross (AaBb x AaBb) according to Mendelian genetics?

Accepted Answer

9:3:3:1

Question 9

Which of the following best describes the semi-conservative model of DNA replication?

Accepted Answer

Each new DNA molecule consists of one old strand and one new strand.

Question 10

Which of the following is NOT a function of proteins in biological systems?

Accepted Answer

Genetic information storage

Question 11

Which organelle is responsible for energy production in eukaryotic cells?

Accepted Answer

Mitochondrion

Question 12

Which law states that energy cannot be created or destroyed, only transformed?

Accepted Answer

First law of thermodynamics

Question 13

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

Accepted Answer

Pink flowers from red and white parents

Question 14

Which process is illustrated by the equation $$\mathrm{ATP \rightarrow ADP + P_i}$$?

Accepted Answer

ATP hydrolysis (energy release)

Question 15

Which of the following is true about the sodium-potassium pump?

Accepted Answer

It requires ATP to move ions against their concentration gradients.

Question 16

Which of the following best describes the process of ex vivo gene therapy?

Accepted Answer

Cells are removed from the patient, genetically modified outside the body, and then reintroduced.

Question 17

Which phase of the cell cycle is characterized by DNA replication?

Accepted Answer

S phase

Question 18

Which chromosomal abnormality involves the exchange of segments between two different chromosomes?

Accepted Answer

Translocation

Question 19

What is the function of the ribosome in protein synthesis?

Accepted Answer

It translates mRNA into a polypeptide chain.

Question 20

Which of the following best describes the difference between allopatric and sympatric speciation?

Accepted Answer

Allopatric speciation occurs due to geographical isolation, while sympatric speciation occurs due to reproductive isolation.

Comprehensive Study Notes for Introductory Biology and Biochemistry (BIO 114)

Study Guide - Practice Questions