Q: Which equation correctly represents the hydrolysis of ATP, a process that links exergonic and endergonic reactions?

$$\mathrm{ATP} + \mathrm{H}_2\mathrm{O} \rightarrow \mathrm{ADP} + \mathrm{P}_i + \text{energy}$$

Q: In the context of cellular respiration, which equation summarizes the process?

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

Question 1

Which of the following best describes the function of the plasma membrane in a eukaryotic cell?

Accepted Answer

It acts as a selective barrier, allowing some substances to enter or leave while keeping others out.

Question 2

Which process is illustrated by the movement of ions from low concentration to high concentration across a membrane, as shown in the 'Active Transport' diagram?

Accepted Answer

Active transport

Question 3

Which equation correctly represents the hydrolysis of ATP, a process that links exergonic and endergonic reactions?

Accepted Answer

$$\mathrm{ATP} + \mathrm{H}_2\mathrm{O} ightarrow \mathrm{ADP} + \mathrm{P}_i + 	ext{energy}$$

Question 4

Which organelle is primarily responsible for packaging and modifying proteins for secretion, as shown in the cell diagram?

Accepted Answer

Golgi apparatus

Question 5

In the context of cellular respiration, which equation summarizes the process?

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 6

Which enzyme is responsible for fixing carbon from $$\mathrm{CO}_2$$ into biomolecules during photosynthesis?

Accepted Answer

RuBisCo

Question 7

What is the main function of ATP synthase in cellular bioenergetics?

Accepted Answer

Capturing energy into ATP molecules by using a proton gradient

Question 8

Which of the following is an example of an endergonic reaction in cells?

Accepted Answer

Active transport

Question 9

During DNA replication, new nucleotides are added to which end of the growing strand?

Accepted Answer

3' end

Question 10

Which statement best describes the central dogma of molecular biology?

Accepted Answer

DNA is transcribed into RNA, which is translated into proteins.

Question 11

Which process is responsible for the movement of water across a cell membrane?

Accepted Answer

Osmosis

Question 12

Which of the following is NOT a function of the plasma membrane?

Accepted Answer

Synthesizing proteins

Question 13

Which of the following best explains why ions require protein channels to cross the plasma membrane?

Accepted Answer

Ions are hydrophilic and cannot pass through the hydrophobic core of the membrane.

Question 14

Which of the following levels of biological organization is immediately above 'cell'?

Accepted Answer

Tissue

Question 15

Which of the following is a correct description of the role of transcription factors in gene expression regulation?

Accepted Answer

They bind to DNA sequences to either activate or repress transcription.

Question 16

Which process is illustrated by the conversion of $$\mathrm{CO}_2$$ and $$\mathrm{H}_2\mathrm{O}$$ into sugars using sunlight energy?

Accepted Answer

Photosynthesis

Question 17

Which of the following is a plausible consequence of a nonsense mutation in a gene?

Accepted Answer

The protein is shorter and nonfunctional.

Question 18

Which of the following best describes the role of the signal molecule (ligand) in cell signaling pathways?

Accepted Answer

It initiates a response by binding to a receptor and causing a shape change.

Question 19

Which of the following is a real-world application of PCR (Polymerase Chain Reaction) in biotechnology?

Accepted Answer

Amplifying specific DNA sequences for genetic testing

Question 20

Which of the following best explains why ATP is considered the 'energy currency' of the cell?

Accepted Answer

ATP can transfer energy from exergonic to endergonic reactions by hydrolysis and phosphorylation.

Comprehensive Biology Final Exam Review: Cells, Processes, Genetics, and Molecular Biology

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