Question 1

What would extended chromatin wrapped around a group of eight histones be called?

Accepted Answer

The answer of What would extended chromatin wrapped around a...

Question 2

Phospholipids of the plasma membrane are arranged

Accepted Answer

A)   as a bilayer with their nonpolar tails sandwiched between the polar heads.
B)   around a central layer of cholesterol.
C)   in a single layer with polar heads facing outwards.
D)   as a bilayer with their polar heads sandwiched between the nonpolar tails.

Question 3

In chromatin, the DNA molecule wraps around proteins called

Accepted Answer

A)   integral protein.
B)   codons.
C)   nucleotides.
D)   histones.

Question 4

Peroxisomes are important in detoxification of a number of toxic substances, for instance, hydrogen peroxide.

Accepted Answer

A) True 
 B)False

Question 5

Figure 2.1
Use the diagram above to answer the following questions.
-Which letter indicates the rough endoplasmic reticulum?

Accepted Answer

A)   A
B)   B
C)   C
D)   D
E)   E

Question 6

The process of cellular aging may involve all of the following except

Accepted Answer

A)   decreased production of lysosomes.
B)   accumulated damage by free radicals.
C)   progressive shortening of telomeres.
D)   excessive metabolic rate.

Question 7

During anaphase, motor proteins attached to mitotic spindle fibers serve to

Accepted Answer

A)   form the aster.
B)   re-form the nuclear envelope.
C)   pull the chromosomes to opposite poles of the cell.
D)   pull together the replicated chromosomal strands.

Question 8

This organelle produces ATP molecules.

Accepted Answer

A)   Golgi apparatus
B)   lysosome
C)   rough endoplasmic reticulum
D)   mitochondria
E)   peroxisome

Question 9

Figure 2.2
Use the diagram above to answer the following questions.
-Which letter indicates the chromatid?

Accepted Answer

A)   A
B)   B
C)   C
D)   D
E)   E

Question 10

Figure 2.1
Use the diagram above to answer the following questions.
-Which letter indicates the nucleolus?

Accepted Answer

A)   A
B)   B
C)   C
D)   D
E)   E

Question 11

Which type of endocytosis ingests the most specific type of molecule?

Accepted Answer

A)   receptor-mediated endocytosis
B)   pinocytosis
C)   phagocytosis
D)   fluid-phase endocytosis

Question 12

Peroxisomes

Accepted Answer

A)   synthesize proteins for use outside the cell.
B)   are the toxic waste removal system of the cell.
C)   contain some of the code necessary for their own duplication.
D)   are involved in the production of ATP.

Question 13

This is the name for the currently held theory describing the plasma membrane structure.

Accepted Answer

The answer of This is the name for the currently...

Question 14

Functions of the Golgi apparatus include all of the following except

Accepted Answer

A)   plasma membrane formation.
B)   synthesis of lysosomes.
C)   production of secretory granules.
D)   DNA replication.

Question 15

During the G1 phase, DNA is replicated in the cytoplasm.

Accepted Answer

A) True 
 B)False

Question 16

Dyneins and kinesins are motor proteins that

Accepted Answer

A)   resist pulling forces that are placed on cells.
B)   move organelles along microtubules through the cytoplasm.
C)   enable a cell to send out and retract extensions called pseudopods.
D)   are molecular components of telomeres.

Question 17

Which of the following statements about the rough endoplasmic reticulum is false?

Accepted Answer

A)   It consists of stacked envelopes called cisternae.
B)   It makes the integral proteins of the cell membrane.
C)   It stores lipids as inclusions.
D)   It makes the digestive enzymes contained in the lysosomes.

Question 18

Extended chromatin is tightly wound around histones.

Accepted Answer

A) True 
 B)False

Question 19

Describe the mitochondria.

Accepted Answer

These are long, thin organelles, that ha...

Question 20

Materials that are to be exocytosed by cells are enclosed in vesicles synthesized by the

Accepted Answer

A)   mitochondrion.
B)   nucleosome.
C)   Golgi apparatus.
D)   ribosome.

Exam 2: The Cell

During anaphase, motor proteins attached to mitotic spindle fibers serve to

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This organelle produces ATP molecules.

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Extended chromatin is tightly wound around histones.

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Functions of the Golgi apparatus include all of the following except

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Peroxisomes are important in detoxification of a number of toxic substances, for instance, hydrogen peroxide.

Correct AnswerverifiedShow Answer

Dyneins and kinesins are motor proteins that

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Which type of endocytosis ingests the most specific type of molecule?

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Figure 2.1 Use the diagram above to answer the following questions. -Which letter indicates the nucleolus?

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Phospholipids of the plasma membrane are arranged

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Which of the following statements about the rough endoplasmic reticulum is false?

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Figure 2.1 Use the diagram above to answer the following questions. -Which letter indicates the rough endoplasmic reticulum?

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Figure 2.2 Use the diagram above to answer the following questions. -Which letter indicates the chromatid?

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The process of cellular aging may involve all of the following except

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What would extended chromatin wrapped around a group of eight histones be called?

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Peroxisomes

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Materials that are to be exocytosed by cells are enclosed in vesicles synthesized by the

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In chromatin, the DNA molecule wraps around proteins called

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Describe the mitochondria.

Correct AnswerverifiedThese are long, thin organelles, that ha...View AnswerShow Answer

During the G1 phase, DNA is replicated in the cytoplasm.

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This is the name for the currently held theory describing the plasma membrane structure.

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These are long, thin organelles, that ha...
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