Question 1

are membrane proteins that bind to signals by which cells communicate.

Accepted Answer

A) Receptors 
B) Enzymes 
C) Carriers 
D) Cell-identity markers 
E) Cell-adhesion molecules

Question 2

Insulin is taken up by endocytosis by endothelial cells lining capillaries, and then transported across the cell to the other side, where it is released.This transport is called

Accepted Answer

A) pinocytosis. 
B) receptor-mediated phagocytosis. 
C) passive transport. 
D) facilitated transport. 
E) transcytosis.

Question 3

In its second-messenger role, cAMP activates enzymes called , whose job is to regulate other enzymes by adding phosphate groups to them.

Accepted Answer

A) transmembrane proteins 
B) peripheral proteins 
C) kinases 
D) glycocalyx 
E) blockers

Question 4

What function would immediately cease if the ribosomes of a cell were destroyed?

Accepted Answer

A) exocytosis 
B) active transport 
C) ciliary action 
D) protein synthesis 
E) osmosis

Question 5

Gates respond to all these stimuli except

Accepted Answer

A) chemical messengers. 
B) ligands. 
C) changes in electrical potential (voltage) across the plasma membrane. 
D) physical deformation of the plasma membrane. 
E) water in the extracellular fluid.

Question 6

These are all membranous organelles except

Accepted Answer

A) mitochondria. 
B) ribosomes. 
C) the nucleus. 
D) endoplasmic reticulum. 
E) the Golgi complex.

Question 7

consume ATP when transferring solutes from one side to the other side of the plasma membrane.

Accepted Answer

A) Receptors 
B) Pumps 
C) Cell-adhesion molecules 
D) Channels 
E) Cell-identity markers

Question 8

decompose fatty acids, and detoxify alcohol, free radicals, and drugs.

Accepted Answer

A) Lysosomes 
B) Microvilli 
C) Inclusions 
D) Peroxisomes 
E) Golgi vesicles

Question 9

The most important advantage of transmission electron microscope (TEM) over light microscope
(LM) is its higher resolution.

Accepted Answer

A) True 
 B)False

Question 10

Facilitated diffusion and active transport have in common that both

Accepted Answer

A) are processes involving transport of a solute up its concentration gradient. 
B) are processes involving transport of a solute down its concentration gradient. 
C) are processes involving the use of energy provided by ATP. 
D) are processes ATP independent. 
E) are cases of carrier-mediated transport.

Question 11

is not involved in protein synthesis.

Accepted Answer

A) Smooth ER 
B) Rough ER 
C) The Golgi complex 
D) The nucleus 
E) Ribosomes

Question 12

A red blood cell is placed in a hypertonic solution.The concentration of solutes in the solution is than the concentration of solutes in the intracellular fluid and will cause the cell to
)

Accepted Answer

A) higher; swell 
B) lower; swell 
C) higher; shrink 
D) lower; shrink 
E) lower; burst

Question 13

are the most abundant molecules in the plasma membrane.

Accepted Answer

A) Glycolipids 
B) Phospholipids 
C) Prostaglandins 
D) Proteins 
E) Cholesterol molecules

Question 14

act like identification tags in the glycocalyx that enable the body to distinguish its own cells from foreign and diseased cells.

Accepted Answer

A) Glycoproteins 
B) Lipoproteins 
C) Cholesterol molecules 
D) Phospholipids 
E) Cell-adhesion molecules

Question 15

This organelle synthesizes steroids in the ovary and stores calcium in muscle cells.

Accepted Answer

A) smooth endoplasmic reticulum 
B) rough endoplasmic reticulum 
C) nucleus 
D) mitochondrion 
E) Golgi complex

Question 16

This figure shows the structure of a representative cell.What does "B" represent?

Accepted Answer

A) Golgi complex 
B) rough ER 
C) smooth ER 
D) mitochondrion 
E) nucleolus

Question 17

play an important role in cell division, and they are made of .

Accepted Answer

A) Mitochondria; microtubules 
B) Ribosomes; intermediate filaments 
C) Nucleoli; microfilaments 
D) Centrioles; microtubules 
E) Inclusions; centrosomes

Question 18

A crystal of calcium phosphate in the cytoplasm of a cell should be classified as an inclusion.

Accepted Answer

A) True 
 B)False

Question 19

This figure shows the plasma membrane.What does "A" represent?

Accepted Answer

A) a peripheral protein 
B) a channel protein 
C) a glycoprotein 
D) cholesterol 
E) a phospholipid

Question 20

Both the nucleus and the mitochondrion are surrounded by two layers of unit membrane.

Accepted Answer

A) True 
 B)False

Exam 3: Cellular Form and Function

are membrane proteins that bind to signals by which cells communicate.

Insulin is taken up by endocytosis by endothelial cells lining capillaries, and then transported across the cell to the other side, where it is released.This transport is called

In its second-messenger role, cAMP activates enzymes called , whose job is to regulate other enzymes by adding phosphate groups to them.

What function would immediately cease if the ribosomes of a cell were destroyed?

Gates respond to all these stimuli except

These are all membranous organelles except

consume ATP when transferring solutes from one side to the other side of the plasma membrane.

decompose fatty acids, and detoxify alcohol, free radicals, and drugs.

The most important advantage of transmission electron microscope (TEM) over light microscope (LM) is its higher resolution.

Facilitated diffusion and active transport have in common that both

is not involved in protein synthesis.

A red blood cell is placed in a hypertonic solution.The concentration of solutes in the solution is than the concentration of solutes in the intracellular fluid and will cause the cell to )

are the most abundant molecules in the plasma membrane.

act like identification tags in the glycocalyx that enable the body to distinguish its own cells from foreign and diseased cells.

This organelle synthesizes steroids in the ovary and stores calcium in muscle cells.

This figure shows the structure of a representative cell.What does "B" represent?

play an important role in cell division, and they are made of .

A crystal of calcium phosphate in the cytoplasm of a cell should be classified as an inclusion.

This figure shows the plasma membrane.What does "A" represent?

Both the nucleus and the mitochondrion are surrounded by two layers of unit membrane.