Question 1

An immune system cell called the plasma cell produces thousands of antibodies per second for release into the body. What type of intracellular structure would you expect to be very prominent within the cell?

Accepted Answer

A)  nucleus
B)  endoplasmic reticulum
C)  peroxisome
D)  microtubules B

Question 2

The extracellular matrix attached to cells via glycoproteins may then bind to ________ in the plasma membrane.

Accepted Answer

A)  dynein
B)  collagen
C)  integrins
D)  polysaccharides

Question 3

A scientist wants to examine living cells lining the respiratory tract to determine how the cells use tiny hairs to move dirt and mucus away from the lungs. Which of the following instruments would be best, and why?

Accepted Answer

A)  a light microscope, because it allows observations of whole, live cells
B)  a transmission electron microscope, because it has high resolution
C)  a scanning electron microscope, because it can reveal structures on cell surfaces
D)  a scanning electron microscope, because it can be used to observe whole cells without slicing them

Question 4

The Golgi apparatus

Accepted Answer

A)  is composed of stacks of membranous vesicles that are continuous with one another.
B)  stores, modifies, and packages proteins.
C)  strings together amino acids to produce proteins.
D)  is the site of carbohydrate breakdown.

Question 5

Archaea are composed of ________ cells.

Accepted Answer

A)  prokaryotic
B)  bacterial
C)  eukaryotic
D)  animal

Question 6

The diameter of most animal and plant cells ranges from

Accepted Answer

A)  0) 1 to 1.0 micrometers.
B)  1) 0 to 10 micrometers.
C)  10 to 100 micrometers.
D)  100 to 1000 micrometers.

Question 7

Contractile vacuoles

Accepted Answer

A)  are generally found in protists that inhabit salt water.
B)  help in the excretion of excess salt.
C)  prevent cells from bursting as a result of the influx of excess water.
D)  allow organisms to avoid dehydration by absorbing water from the environment.

Question 8

A pathologist who wants to examine a patient's liver cells to determine if the mitochondria have an internal structural defect will likely need to use a

Accepted Answer

A)  light microscope.
B)  transmission electron microscope.
C)  scanning electron microscope.
D)  chromatin stain.

Question 9

Which of the following statements about the cytoskeleton is false?

Accepted Answer

A)  The cytoskeleton helps to support cells.
B)  Once laid down, the elements of the cytoskeleton are fixed and remain permanently in place.
C)  The cytoskeleton is composed of three types of fibers: microfilaments, microtubules, and intermediate filaments.
D)  The cytoskeleton plays an important role in amoeboid motion.

Question 10

Your throat is dry, and you want the last cough drop in the box to last a long time in your mouth. What should you do?

Accepted Answer

A)  Break the cough drop into little pieces and put them all in your mouth. Since each little piece must be dissolved separately, the drop will last longer.
B)  Keep the cough drop whole. This maintains the largest surface-to-volume ratio and slows the dissolution of the cough drop.
C)  Break the cough drop into little pieces and put them all in your mouth. This decreases the surface-to-volume ratio and slows the dissolution of the cough drop.
D)  It doesn't matter if the cough drop is in one piece or many pieces; the total amount of cough drop is all that matters.

Question 11

Tay-Sachs disease

Accepted Answer

A)  causes an accumulation of lipids in brain cells.
B)  involves damage to liver cells.
C)  is due to the absence of an enzyme that digests polysaccharides.
D)  prevents the breakdown of glycogen.

Question 12

After reading the paragraph below, answer the questions that follow.
Studies of the endomembrane system often involve the use of a protein that can emit a green fluorescence (glow) . A researcher wants to make a video of cell behavior, so she initially tags the outer nuclear envelope of a cell with the fluorescent tag and records for several hours. Later, she sees that the tag is part of a secretory vesicle.
-What likely happened during the intervening time?

Accepted Answer

A)  The outer membrane of the nucleus broke off and moved the fluorescent tag to the Golgi.
B)  The endoplasmic reticulum engulfed the tagged protein and released it in a secretory vacuole.
C)  Material from the nucleus, including the tag, was being secreted outside the cell.
D)  The tag was seen in the Golgi before being seen in a secretory vacuole. D

Question 13

A child dies following a series of chronic bacterial infections. At the autopsy, the physicians are startled to see that the child's white blood cells are loaded with vacuoles containing intact bacteria. Which of the following explanations could account for this finding?

Accepted Answer

A)  A defect in the Golgi apparatus prevented the cells from processing and excreting the bacteria.
B)  A defect in the rough endoplasmic reticulum prevented the synthesis of the antibodies (defensive proteins) that would have inactivated the bacteria.
C)  A defect in the cell walls of the white blood cells permitted bacteria to enter the cells.
D)  A defect in the lysosomes of the white blood cells prevented the cells from destroying engulfed bacteria.

Question 14

Which location in the cell is unlikely to contain ribosomes or ribosomal subunits?

Accepted Answer

A)  nuclear envelope
B)  plasma membrane
C)  endoplasmic reticulum
D)  cytoplasm

Question 15

A cell is exposed to a substance that prevents it from dividing. The cell becomes larger and larger. This situation

Accepted Answer

A)  should present no problem to the cell, since it can continue to perform all other necessary functions.
B)  should present no problem to the cell, because the surface area of the cell will increase as the volume of the cell increases.
C)  will eventually be problematic, since the cell's ability to absorb nutrients through its outer membrane will not keep increasing as quickly as its cytoplasmic needs.
D)  should be beneficial, since the cell will be able to divert the ATP normally used for cell division to other processes.

Question 16

One centimeter = ________ millimeters.

Accepted Answer

A)  0) 01
B)  0) 10
C)  10
D)  100

Question 17

Which of the following statements about electron microscopes is true?

Accepted Answer

A)  Electron microscopes focus electron beams to create a magnified image of an object.
B)  Scanning electron microscopes are used to study the details of internal cell structure.
C)  Transmission electron microscopes are mainly used to study cell surfaces.
D)  Specimens must be sectioned to be viewed under a scanning electron microscope.

Question 18

Which of the following statements about plant cell walls is false?

Accepted Answer

A)  Plant cell walls consist of cellulose fibers embedded in a matrix of polysaccharides and proteins.
B)  Plant cell walls are multilayered structures.
C)  Plant cell walls protect plant cells by forming an impermeable layer around the cell.
D)  Wood is primarily composed of plant cell walls.

Question 19

Insulin is a protein that is produced by pancreatic cells and secreted into the bloodstream. Which of the following options correctly lists the order of the structures through which insulin passes from its production to its exit from the cell?

Accepted Answer

A)  rough ER, transport vesicles, Golgi apparatus, transport vesicles, cell membrane
B)  rough ER, lysosomes, transport vesicles, cell membrane
C)  rough ER, Golgi apparatus, smooth ER, cell membrane
D)  rough ER, transport vesicles, Golgi apparatus, vacuole, cell membrane

Question 20

Much of the intracellular structure of a eukaryote cell is involved in protein synthesis. The figure shows the amounts of protein in cells at different parts of the cell cycle between two cell divisions. G₁ is a stage just after the cell has divided, and G₂ is the stage just before the cell divides again. S is a stage when the cell is synthesizing material such as DNA, mitochondria, and other organelles.
-Which of these conclusions cannot reasonably be drawn from the graph?

Accepted Answer

A)  Protein production occurs throughout the cell cycle.
B)  Increase in ribosomal activity occurs as a cell prepares to divide.
C)  Cells export a large amount of protein following cell division.
D)  There is always a supply of amino acids in the cell. C

Exam 4: A Tour of the Cell

An immune system cell called the plasma cell produces thousands of antibodies per second for release into the body. What type of intracellular structure would you expect to be very prominent within the cell?

Correct Answer
verified
B

The extracellular matrix attached to cells via glycoproteins may then bind to ________ in the plasma membrane.

Correct Answer
verified

A scientist wants to examine living cells lining the respiratory tract to determine how the cells use tiny hairs to move dirt and mucus away from the lungs. Which of the following instruments would be best, and why?

Correct Answer
verified

The Golgi apparatus

Correct Answer
verified

Archaea are composed of ________ cells.

Correct Answer
verified

The diameter of most animal and plant cells ranges from

Correct Answer
verified

Contractile vacuoles

Correct Answer
verified

A pathologist who wants to examine a patient's liver cells to determine if the mitochondria have an internal structural defect will likely need to use a

Correct Answer
verified

Which of the following statements about the cytoskeleton is false?

Correct Answer
verified

Your throat is dry, and you want the last cough drop in the box to last a long time in your mouth. What should you do?

Correct Answer
verified

Tay-Sachs disease

Correct Answer
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Correct Answer
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D

A child dies following a series of chronic bacterial infections. At the autopsy, the physicians are startled to see that the child's white blood cells are loaded with vacuoles containing intact bacteria. Which of the following explanations could account for this finding?

Correct Answer
verified

Which location in the cell is unlikely to contain ribosomes or ribosomal subunits?

Correct Answer
verified

A cell is exposed to a substance that prevents it from dividing. The cell becomes larger and larger. This situation

Correct Answer
verified

One centimeter = ________ millimeters.

Correct Answer
verified

Which of the following statements about electron microscopes is true?

Correct Answer
verified

Which of the following statements about plant cell walls is false?

Correct Answer
verified

Insulin is a protein that is produced by pancreatic cells and secreted into the bloodstream. Which of the following options correctly lists the order of the structures through which insulin passes from its production to its exit from the cell?

Correct Answer
verified

Correct Answer
verified
C

Exam 4: A Tour of the Cell

An immune system cell called the plasma cell produces thousands of antibodies per second for release into the body. What type of intracellular structure would you expect to be very prominent within the cell?

Correct AnswerverifiedB

The extracellular matrix attached to cells via glycoproteins may then bind to ________ in the plasma membrane.

Correct AnswerverifiedShow Answer

A scientist wants to examine living cells lining the respiratory tract to determine how the cells use tiny hairs to move dirt and mucus away from the lungs. Which of the following instruments would be best, and why?

Correct AnswerverifiedShow Answer

The Golgi apparatus

Correct AnswerverifiedShow Answer

Archaea are composed of ________ cells.

Correct AnswerverifiedShow Answer

The diameter of most animal and plant cells ranges from

Correct AnswerverifiedShow Answer

Contractile vacuoles

Correct AnswerverifiedShow Answer

A pathologist who wants to examine a patient's liver cells to determine if the mitochondria have an internal structural defect will likely need to use a

Correct AnswerverifiedShow Answer

Which of the following statements about the cytoskeleton is false?

Correct AnswerverifiedShow Answer

Your throat is dry, and you want the last cough drop in the box to last a long time in your mouth. What should you do?

Correct AnswerverifiedShow Answer

Tay-Sachs disease

Correct AnswerverifiedShow Answer

Correct AnswerverifiedD

A child dies following a series of chronic bacterial infections. At the autopsy, the physicians are startled to see that the child's white blood cells are loaded with vacuoles containing intact bacteria. Which of the following explanations could account for this finding?

Correct AnswerverifiedShow Answer

Which location in the cell is unlikely to contain ribosomes or ribosomal subunits?

Correct AnswerverifiedShow Answer

A cell is exposed to a substance that prevents it from dividing. The cell becomes larger and larger. This situation

Correct AnswerverifiedShow Answer

One centimeter = ________ millimeters.

Correct AnswerverifiedShow Answer

Which of the following statements about electron microscopes is true?

Correct AnswerverifiedShow Answer

Which of the following statements about plant cell walls is false?

Correct AnswerverifiedShow Answer

Insulin is a protein that is produced by pancreatic cells and secreted into the bloodstream. Which of the following options correctly lists the order of the structures through which insulin passes from its production to its exit from the cell?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedC

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B

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D

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C