Q: Which of the following equations correctly represents the net ATP yield from aerobic respiration of one glucose molecule?

$$6 \text{O}_2 + C_6H_{12}O_6$ \rightarrow 6 \text{CO}_2 + 6 \text{H}_2O + 36-38 \text{ATP}$$

Question 1

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

Accepted Answer

It is selectively permeable, controlling the movement of chemicals in and out of the cell.

Question 2

Which component of the plasma membrane is primarily responsible for its fluidity and flexibility?

Accepted Answer

Cholesterol

Question 3

A red blood cell is placed in a hypertonic solution. What is the most likely outcome?

Accepted Answer

The cell will shrink and undergo crenation.

Question 4

Which organelle is responsible for the majority of ATP production in eukaryotic cells?

Accepted Answer

Mitochondria

Question 5

During facilitated diffusion, which of the following is TRUE?

Accepted Answer

Transport proteins assist molecules in moving down their concentration gradient without using energy.

Question 6

Which of the following equations correctly represents the net ATP yield from aerobic respiration of one glucose molecule?

Accepted Answer

$$6 	ext{O}_2 + C_6H_{12}O_6$ ightarrow 6 	ext{CO}_2 + 6 	ext{H}_2O + 36-38 	ext{ATP}$$

Question 7

Which of the following best explains why phospholipids form a bilayer in the plasma membrane?

Accepted Answer

Their hydrophilic heads face the aqueous environment, while hydrophobic tails face inward, away from water.

Question 8

A patient is exposed to a toxin that inhibits the function of ribosomes. Which cellular process will be most directly affected?

Accepted Answer

Protein synthesis

Question 9

Which organelle contains hydrolytic enzymes and is involved in autophagy and protection against foreign substances?

Accepted Answer

Lysosome

Question 10

Which of the following statements about cell division is correct?

Accepted Answer

Mitosis occurs in somatic cells and maintains the chromosome number.

Question 11

Which cytoskeletal element is primarily responsible for cell movement and mechanical support?

Accepted Answer

Microfilaments

Question 12

A cell is actively transporting sodium ions out of the cell against their concentration gradient. Which transport mechanism is being used?

Accepted Answer

Active transport

Question 13

Which of the following is TRUE regarding the genetic material in mitochondria?

Accepted Answer

Mitochondrial DNA is circular and inherited only from the mother.

Question 14

Which process describes the movement of water across a selectively permeable membrane from an area of high concentration to low concentration?

Accepted Answer

Osmosis

Question 15

Which organelle is responsible for modifying and packaging proteins and lipids for delivery to other parts of the cell?

Accepted Answer

Golgi apparatus

Question 16

Which of the following best describes apoptosis?

Accepted Answer

A genetically programmed, age-related cell death without inflammation.

Question 17

Which of the following is a function of peroxisomes in the cell?

Accepted Answer

Oxidation of toxic substances such as alcohol and formaldehyde

Question 18

Which of the following best explains the difference between passive and active transport across the plasma membrane?

Accepted Answer

Active transport moves substances against their concentration gradient using energy, while passive transport moves substances down their gradient without energy.

Question 19

Which of the following is TRUE about the glycocalyx on the plasma membrane?

Accepted Answer

It is composed of modified lipids and proteins and helps in cell recognition and protection from enzyme digestion.

Question 20

During protein synthesis, which process occurs in the nucleus and involves copying DNA to make mRNA?

Accepted Answer

Transcription

The Cellular Level of Organization: Anatomy & Physiology Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards