Question 1

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 2

Match the following:
-Present in electrically excitable tissues.

Accepted Answer

A)  Tight junctions
B)  Gap junctions
C)  DesmosomesD) B) and C)
E) A) and B)

Question 3

Describe the difference in cell division between normal cells and cancer cells.

Accepted Answer

Normal cells divide in two distinct even...

Question 4

Match the following:
-The organelle that facilitates peptic bond formation between amino acids.

Accepted Answer

A)  Microtubules
B)  Nucleoli
C)  Ribosomes
D)  Endoplasmic reticulum
E)  NucleusF) B) and D)
G) B) and C)

Question 5

Which of the following would not be restricted (limited) by low levels of ATP?

Accepted Answer

A)   exocytosis
B)   pinocytosis
C)   phagocytosis
D)   osmosisE) C) and D)
F) None of the above

Question 6

Which of the following statements is correct regarding net diffusion?

Accepted Answer

A)   The greater the concentration gradient, the faster the rate.
B)   The lower the temperature, the faster the rate.
C)   The rate is independent of temperature.
D)   Molecular weight of a substance does not affect the rate.E) None of the above
F) All of the above

Question 7

Figure 3.1
Using Figure 3.1, match the following:
-Packages proteins for insertion in the cell membrane or for exocytosis.

Accepted Answer

A)  C
B)  E
C)  D
D)  A
E)  BF) A) and D)
G) B) and D)

Question 8

Which of the following is a principle of the fluid mosaic model of cell membrane structure?

Accepted Answer

A)   Phospholipids form a bilayer that is largely impermeable to water-soluble molecules.
B)   Phospholipids consist of a polar head and a nonpolar tail made of three fatty acid chains.
C)   All proteins associated with the cell membrane are contained in a fluid layer on the outside of the cell.
D)   The lipid bilayer is a solid at body temperature, thus protecting the cell.E) C) and D)
F) A) and B)

Question 9

Briefly describe the glycocalyx and its functions.

Accepted Answer

The glycocalyx is the sticky,c...

Question 10

Apoptosis is programmed cell suicide; cancer cells do not undergo this process.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following statements is most correct regarding the intracellular chemical signals known as "second messengers"?

Accepted Answer

A)   Second messengers usually inactivate protein kinase enzymes.
B)   Second messengers usually act to remove nitric oxide (NO)  from the cell.
C)   Cyclic AMP and calcium may be second messengers.
D)   Second messengers act through receptors called K-proteins.E) B) and C)
F) All of the above

Question 12

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 13

Which of the following is NOT a function of the smooth endoplasmic reticulum?

Accepted Answer

A)   breakdown of stored glycogen to form free glucose
B)   steroid-based hormone synthesis
C)   protein synthesis in conjunction with ribosomes
D)   lipid metabolism and cholesterol synthesisE) A) and C)
F) B) and C)

Question 14

Aquaporins are believed to be present in red blood cells and kidney tubules,but not in any other cells in the body.

Accepted Answer

A) True 
 B)False

Question 15

The most common extracellular ion is ________.

Accepted Answer

The answer of The most common extracellular ion is ________....

Question 16

At of age of 6 months,Caleb was diagnosed with Tay-Sachs disease.As his primary care physician,what would you tell his parents about this disease?

Accepted Answer

It is an inherited condition where vario...

Question 17

Which of the following would NOT assist in establishing a resting membrane potential?

Accepted Answer

A)   Having greater concentration of glycolipids on the outside surface of the membrane.
B)   Selective diffusion allowing more uncharged particles into the cell.
C)   Selective diffusion allowing more positively charged ions to diffuse out of the cell.
D)   Selective diffusion allowing fewer positively charged ions to diffuse into the cell.E) None of the above
F) B) and D)

Question 18

Telomeres are the regions of chromosomes that code for the protein ubiquitin.

Accepted Answer

A) True 
 B)False

Question 19

Figure 3.2
Using Figure 3.2, match the following:
-Polar region of phospholipid.

Accepted Answer

A)  A
B)  E
C)  C
D)  D
E)  BF) B) and E)
G) C) and D)

Question 20

How are peroxisomes different from lysosomes?

Accepted Answer

Peroxisomes contain oxidases that use ox...

Exam 3: Cells: the Living Units

Figure 3.1 Using Figure 3.1, match the following: -Packages proteins for insertion in the cell membrane or for exocytosis.

Correct AnswerverifiedShow Answer

Describe the difference in cell division between normal cells and cancer cells.

Correct AnswerverifiedNormal cells divide in two distinct even...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

Which of the following is NOT a function of the smooth endoplasmic reticulum?

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

Figure 3.2 Using Figure 3.2, match the following: -Polar region of phospholipid.

Correct AnswerverifiedShow Answer

Telomeres are the regions of chromosomes that code for the protein ubiquitin.

Correct AnswerverifiedShow Answer

Which of the following statements is correct regarding net diffusion?

Correct AnswerverifiedShow Answer

The most common extracellular ion is ________.

Correct AnswerverifiedShow Answer

Match the following: -The organelle that facilitates peptic bond formation between amino acids.

Correct AnswerverifiedShow Answer

Apoptosis is programmed cell suicide; cancer cells do not undergo this process.

Correct AnswerverifiedShow Answer

At of age of 6 months,Caleb was diagnosed with Tay-Sachs disease.As his primary care physician,what would you tell his parents about this disease?

Correct AnswerverifiedIt is an inherited condition where vario...View AnswerShow Answer

Match the following: -Present in electrically excitable tissues.

Correct AnswerverifiedShow Answer

Briefly describe the glycocalyx and its functions.

Correct AnswerverifiedThe glycocalyx is the sticky,c...View AnswerShow Answer

Which of the following would NOT assist in establishing a resting membrane potential?

Correct AnswerverifiedShow Answer

Aquaporins are believed to be present in red blood cells and kidney tubules,but not in any other cells in the body.

Correct AnswerverifiedShow Answer

Which of the following would not be restricted (limited) by low levels of ATP?

Correct AnswerverifiedShow Answer

Which of the following statements is most correct regarding the intracellular chemical signals known as "second messengers"?

Correct AnswerverifiedShow Answer

How are peroxisomes different from lysosomes?

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

Which of the following is a principle of the fluid mosaic model of cell membrane structure?

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Normal cells divide in two distinct even...
View Answer

Correct Answer
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Ciliated cells that live in the respirat...
View Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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It is an inherited condition where vario...
View Answer

Correct Answer
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Correct Answer
verified
The glycocalyx is the sticky,c...
View Answer

Correct Answer
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Correct Answer
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Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Peroxisomes contain oxidases that use ox...
View Answer

Correct Answer
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