Question 1

Refer to the mitochondrion diagram (Image 1). Which label corresponds to the structure where the majority of ATP is produced during cellular respiration?

Accepted Answer

D

Question 2

In the U-tube experiment (Image 2), the membrane is permeable to NaCl but not to glucose. After equilibrium is reached, what will happen to the water level on side A?

Accepted Answer

It will decrease due to the net movement of NaCl to side B.

Question 3

In the plasma membrane diagram (Image 3), which component is cholesterol?

Accepted Answer

C

Question 4

In the dialysis bag experiment (Image 4), which line represents the bag that was isotonic to the beaker solution at the start?

Accepted Answer

C

Question 5

Which of the following best explains why cells are limited in size by their surface area-to-volume ratio?

Accepted Answer

As cells grow, their volume increases faster than their surface area, limiting the rate of material exchange.

Question 6

Which of the following is a function of the Golgi apparatus?

Accepted Answer

Sorting and packaging proteins for secretion

Question 7

Which of the following statements about the fluid mosaic model of membranes is correct?

Accepted Answer

Phospholipids and proteins can move laterally within the layer.

Question 8

Which process requires energy input from the cell and moves substances against their concentration gradient?

Accepted Answer

Active transport

Question 9

Which of the following molecules would most easily pass through a pure phospholipid bilayer?

Accepted Answer

CO$$_2$$

Question 10

Which organelle is responsible for the breakdown of damaged organelles and cellular debris?

Accepted Answer

Lysosome

Question 11

Which of the following best describes the amphipathic nature of phospholipids?

Accepted Answer

They have hydrophilic heads and hydrophobic tails.

Question 12

Which type of cell junction allows for the direct passage of ions and small molecules between adjacent animal cells?

Accepted Answer

Gap junctions

Question 13

Which of the following is NOT found in prokaryotic cells?

Accepted Answer

Endoplasmic reticulum

Question 14

Which of the following best describes the function of the nucleolus?

Accepted Answer

Manufacture of ribosomal RNA

Question 15

Which of the following best explains why cholesterol is important in animal cell membranes?

Accepted Answer

It enables the membrane to stay fluid at lower temperatures.

Question 16

Which of the following is a characteristic feature of carrier proteins in the plasma membrane?

Accepted Answer

They exhibit specificity for a particular type of molecule.

Question 17

Which process is used by white blood cells to engulf bacteria?

Accepted Answer

Phagocytosis

Question 18

Which of the following best describes the role of the sodium-potassium pump in animal cells?

Accepted Answer

It contributes to the membrane potential by pumping Na$$^+$$ out and K$$^+ in.$$

Question 19

Which of the following best explains why celery stalks become stiff in fresh water but limp in salt solution?

Accepted Answer

Fresh water is hypotonic and salt solution is hypertonic to the cells.

Question 20

Which of the following best describes the fate of receptor molecules after receptor-mediated endocytosis?

Accepted Answer

They end up on the inside surface of the vesicle.

General Biology Exam 3 Study Guide – Step-by-Step Guidance

Guida di studio - Domande di pratica

Study guide - Flashcard