Question 1

How are peroxisomes different from lysosomes?

Accepted Answer

Peroxisomes contain oxidases that use ox...

Question 2

What processes maintain a steady state "resting" membrane potential?

Accepted Answer

Both diffusion and active tran...

Question 3

Your patient has a respiratory disease that has literally paralyzed the cilia. Explain why this patient would be at an increased risk for a respiratory infection.

Accepted Answer

Ciliated cells that live in the respirat...

Question 4

Mitochondria __________.

Accepted Answer

A)   contain digestive enzymes called acid hydrolyses
B)   contain some of the DNA and RNA code necessary for their own function
C)   are single-membrane structures involved in the breakdown of ATP
D)   synthesize proteins for use outside the cell

Question 5

The functions of centrioles include __________.

Accepted Answer

A)   serving as the site for ribosomal RNA synthesis
B)   organizing the mitotic spindle in cell division
C)   providing a whiplike beating motion to move substances along cell surfaces
D)   producing ATP

Question 6

Interstitial fluid represents one type of extracellular material.

Accepted Answer

A) True 
 B)False

Question 7

If a cell is non-selectively engulfing samples of extracellular fluid, for example to absorb nutrients, it will likely utilize __________ .

Accepted Answer

A)   receptor-mediated endocytosis
B)   exocytosis
C)   pinocytosis
D)   phagocytosis

Question 8

The electron microscope has revealed that one of the components within the cell consists of pinwheel array of 9 triplets of microtubules arranged to form a hollow tube. This structure is a _________.

Accepted Answer

A)   ribosome
B)   chromosome
C)   centriole
D)   centrosome

Question 9

Why can we say that cells are protein factories?

Accepted Answer

Most of the metabolic machiner...

Question 10

Which of the following is NOT one of the concepts collectively known as the cell theory?

Accepted Answer

A)   All organisms are made of one or more cells.
B)   The cell is the smallest unit of life.
C)   Cells only arise from other cells.
D)   All cells must be motile and divide.

Question 11

Microtubules are hollow tubes made of subunits of the protein tubulin.

Accepted Answer

A) True 
 B)False

Question 12

Which organelle is responsible for processing and packaging proteins destined for export from the cell?

Accepted Answer

A)   endoplasmic reticulum
B)   Golgi apparatus
C)   peroxisomes
D)   lysosomes

Question 13

The glycocalyx is composed of glycolipids, glycoproteins, and cholesterol molecules that are displayed on the outside surface of the plasma membrane.

Accepted Answer

A) True 
 B)False

Question 14

Enzymes and proteins needed for cell division are synthesizes and put into place during G₂ phase.

Accepted Answer

A) True 
 B)False

Question 15

If active transport establishes a concentration gradient with the use of ATP, then the concentration gradient can be looked at as_________ .

Accepted Answer

A)   an unusable byproduct of active transport that will simply diffuse away
B)   a byproduct of active transport that will be alleviated by pinocytosis
C)   unwanted pressure that will be alleviated by channel mediated facilitated diffusion
D)   potential energy that can be harnessed when molecules passively diffuse down the concentration gradient

Question 16

Some hormones enter cells via __________.

Accepted Answer

A)   primary active transport
B)   exocytosis
C)   receptor-mediated endocytosis
D)   pinocytosis

Question 17

Passive membrane transport processes include __________ .

Accepted Answer

A)   movement of water from an area of high solute concentration to an area of low concentration
B)   consumption of ATP
C)   the use of transport proteins when moving substances from areas of low to high concentration
D)   movement of a substance down its concentration gradient

Question 18

Peroxisomes __________.

Accepted Answer

A)   function to digest particles ingested by endocytosis
B)   are able to detoxify substances by enzymatic action
C)   are functionally the same as lysosomes
D)   sometimes function as secretory vesicles

Question 19

Dividing cells must pass through the phases of mitosis in the following order: Prophase, Metaphase, Anaphase, and Telophase.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following structures would aid a cell in allowing more nutrients to be absorbed by the cell?

Accepted Answer

A)   stereocilia
B)   flagella
C)   primary cilia
D)   microvilli

Exam 3: Cells: the Living Units

Passive membrane transport processes include __________ .

Correct AnswerverifiedShow Answer

Microtubules are hollow tubes made of subunits of the protein tubulin.

Correct AnswerverifiedShow Answer

Why can we say that cells are protein factories?

Correct AnswerverifiedMost of the metabolic machiner...View AnswerShow Answer

Your patient has a respiratory disease that has literally paralyzed the cilia. Explain why this patient would be at an increased risk for a respiratory infection.

Correct AnswerverifiedCiliated cells that live in the respirat...View AnswerShow Answer

Some hormones enter cells via __________.

Correct AnswerverifiedShow Answer

Mitochondria __________.

Correct AnswerverifiedShow Answer

Peroxisomes __________.

Correct AnswerverifiedShow Answer

Dividing cells must pass through the phases of mitosis in the following order: Prophase, Metaphase, Anaphase, and Telophase.

Correct AnswerverifiedShow Answer

The glycocalyx is composed of glycolipids, glycoproteins, and cholesterol molecules that are displayed on the outside surface of the plasma membrane.

Correct AnswerverifiedShow Answer

What processes maintain a steady state "resting" membrane potential?

Correct AnswerverifiedBoth diffusion and active tran...View AnswerShow Answer

If active transport establishes a concentration gradient with the use of ATP, then the concentration gradient can be looked at as_________ .

Correct AnswerverifiedShow Answer

Interstitial fluid represents one type of extracellular material.

Correct AnswerverifiedShow Answer

The electron microscope has revealed that one of the components within the cell consists of pinwheel array of 9 triplets of microtubules arranged to form a hollow tube. This structure is a _________.

Correct AnswerverifiedShow Answer

Enzymes and proteins needed for cell division are synthesizes and put into place during G₂ phase.

Correct AnswerverifiedShow Answer

The functions of centrioles include __________.

Correct AnswerverifiedShow Answer

If a cell is non-selectively engulfing samples of extracellular fluid, for example to absorb nutrients, it will likely utilize __________ .

Correct AnswerverifiedShow Answer

Which organelle is responsible for processing and packaging proteins destined for export from the cell?

Correct AnswerverifiedShow Answer

How are peroxisomes different from lysosomes?

Correct AnswerverifiedPeroxisomes contain oxidases that use ox...View AnswerShow Answer

Which of the following structures would aid a cell in allowing more nutrients to be absorbed by the cell?

Correct AnswerverifiedShow Answer

Which of the following is NOT one of the concepts collectively known as the cell theory?

Correct AnswerverifiedShow Answer

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Most of the metabolic machiner...
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Ciliated cells that live in the respirat...
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Correct Answer
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Correct Answer
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Correct Answer
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Both diffusion and active tran...
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Correct Answer
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Correct Answer
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Peroxisomes contain oxidases that use ox...
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Correct Answer
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