Question 1

Which of the following events occurs in the nucleus?

Accepted Answer

A)   ATP synthesis
B)   ribosomal proteins formed
C)   chromatin condenses to form chromosomes
D)   manufacture of phospholipids
E)   None of these events occurs in the nucleus.F) A) and C)
G) A) and B)

Question 2

-What structure does "E" represent on the diagram of the plasma membrane?

Accepted Answer

A)   membrane channel protein
B)   phospholipid bilayer
C)   internal membrane surface
D)   peripheral protein
E)   receptor proteinF) C) and E)
G) A) and B)

Question 3

-Answer these questions about chromosome structure. What does "D" represent?

Accepted Answer

A)   chromatid
B)   proteins
C)   chromosome
D)   centromere
E)   chromatinF) A) and E)
G) A) and B)

Question 4

Cells produce and respond to chemical and electrical signals as a means of

Accepted Answer

A)   communicating.
B)   metabolizing.
C)   reproducing.
D)   synthesizing.
E)   using energy.F) A) and E)
G) B) and E)

Question 5

Molecules that serve as chemical signals to open or close gated ion channels are

Accepted Answer

A)   isotopes.
B)   ligands.
C)   responders.
D)   communicators.
E)   membrane potentials.F) A) and B)
G) C) and E)

Question 6

Channel proteins

Accepted Answer

A)   are binding sites for other molecules.
B)   utilize the G protein complex to function.
C)   are found only on endoplasmic reticulum.
D)   allow cells to recognize one another.
E)   provide a tunnel through which ions or molecules can enter or leave the cell.F) B) and D)
G) C) and D)

Question 7

Cyanide stops the production of ATP. Which of the following processes would be affected?

Accepted Answer

A)   simple diffusion
B)   osmosis
C)   active transport
D)   facilitated diffusion
E)   filtrationF) C) and D)
G) B) and E)

Question 8

What term dealing with cancer means "not inclined to spread or become worse'?

Accepted Answer

A)   metastasis
B)   malignant
C)   sarcoma
D)   benign
E)   carcinomaF) C) and D)
G) None of the above

Question 9

When a sperm cell comes into contact with an egg cell, there is a change in the electrical charge across the plasma membrane and various channel proteins close. These channels would be called

Accepted Answer

A)   open-gated channels.
B)   voltage-gated channels.
C)   chemical-gated channels.
D)   ligand-gated channels.
E)   nongated ion channels.F) B) and E)
G) A) and E)

Question 10

A red blood cell that is placed in a hypertonic solution

Accepted Answer

A)   loses water.
B)   gains water.
C)   floats.
D)   ruptures.
E)   neither gains nor loses water.F) A) and E)
G) A) and D)

Question 11

-Answer these questions about chromosome structure. What does "B" represent?

Accepted Answer

A)   chromatid
B)   proteins
C)   chromosome
D)   centromere
E)   chromatinF) C) and D)
G) B) and E)

Question 12

A mitochondrial disease is passed to offspring via the father.

Accepted Answer

A) True 
 B)False

Question 13

What organelle packages materials for secretion from the cell?

Accepted Answer

A)   endoplasmic reticulum
B)   Golgi apparatus
C)   nucleolus
D)   peroxisomes
E)   flagellumF) B) and E)
G) A) and B)

Question 14

The greater the concentration of a solution, the greater the

Accepted Answer

A)   tendency for water to diffuse from the solution.
B)   osmotic pressure of the solution.
C)   number of carrier molecules present.
D)   amount of solvent.
E)   rate of facilitated diffusion.F) C) and E)
G) B) and D)

Question 15

What term dealing with cancer means "spreading to a new site"?

Accepted Answer

A)   metastasis
B)   malignant
C)   sarcoma
D)   benign
E)   carcinomaF) B) and E)
G) A) and D)

Question 16

The cytoskeleton consists of

Accepted Answer

A)   lipochromes, microfilaments, and microtubules.
B)   actin filaments, mitochondria, and intermediate filaments.
C)   microfilaments, mitochondria, and lipochromes.
D)   microtubules, actin filaments, and intermediate filaments.
E)   ribosomes, the nucleus, and the Golgi apparatus.F) A) and E)
G) A) and D)

Question 17

Cilia and flagella are distinguished from each other on the basis of

Accepted Answer

A)   width and numbers.
B)   length and numbers.
C)   depth and numbers.
D)   length and width.
E)   None of these choices is correct.F) B) and D)
G) B) and C)

Question 18

A particular membrane transport process exhibits saturation, uses carrier molecules, but does NOT require ATP. The process is probably

Accepted Answer

A)   active transport.
B)   facilitated diffusion.
C)   osmosis.
D)   pinocytosis.
E)   phagocytosis.F) C) and D)
G) D) and E)

Question 19

Which of the following would increase the maximum rate of facilitated diffusion?

Accepted Answer

A)   increase the concentration gradient of the transported molecule to the saturation point
B)   decrease the concentration gradient of the transported molecule
C)   increase the concentration of the competitive molecules
D)   increased ATP synthesis
E)   None of these choices is correct.F) B) and E)
G) B) and D)

Question 20

A cell can meet increased energy demands by an increase in

Accepted Answer

A)   its overall size so it has more room to generate energy.
B)   the number of mitochondria.
C)   lysosomal enzyme and ribosome activity within the cell.
D)   nuclear DNA activity.
E)   ribosomal subunits.F) A) and E)
G) A) and B)

Exam 3: Cell Biology

-Answer these questions about chromosome structure. What does "D" represent?

Correct AnswerverifiedShow Answer

A cell can meet increased energy demands by an increase in

Correct AnswerverifiedShow Answer

A particular membrane transport process exhibits saturation, uses carrier molecules, but does NOT require ATP. The process is probably

Correct AnswerverifiedShow Answer

Molecules that serve as chemical signals to open or close gated ion channels are

Correct AnswerverifiedShow Answer

What term dealing with cancer means "not inclined to spread or become worse'?

Correct AnswerverifiedShow Answer

Which of the following events occurs in the nucleus?

Correct AnswerverifiedShow Answer

-Answer these questions about chromosome structure. What does "B" represent?

Correct AnswerverifiedShow Answer

Which of the following would increase the maximum rate of facilitated diffusion?

Correct AnswerverifiedShow Answer

Cilia and flagella are distinguished from each other on the basis of

Correct AnswerverifiedShow Answer

Cells produce and respond to chemical and electrical signals as a means of

Correct AnswerverifiedShow Answer

A red blood cell that is placed in a hypertonic solution

Correct AnswerverifiedShow Answer

What organelle packages materials for secretion from the cell?

Correct AnswerverifiedShow Answer

Cyanide stops the production of ATP. Which of the following processes would be affected?

Correct AnswerverifiedShow Answer

When a sperm cell comes into contact with an egg cell, there is a change in the electrical charge across the plasma membrane and various channel proteins close. These channels would be called

Correct AnswerverifiedShow Answer

A mitochondrial disease is passed to offspring via the father.

Correct AnswerverifiedShow Answer

Channel proteins

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The cytoskeleton consists of

Correct AnswerverifiedShow Answer

-What structure does "E" represent on the diagram of the plasma membrane?

Correct AnswerverifiedShow Answer

What term dealing with cancer means "spreading to a new site"?

Correct AnswerverifiedShow Answer

The greater the concentration of a solution, the greater the

Correct AnswerverifiedShow Answer

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