Question 1

Water may move through membrane pores constructed by transmembrane proteins called ________.

Accepted Answer

The answer of Water may move through membrane pores constructed...

Question 2

How are the products of free ribosomes different from membrane-bound ribosomes?

Accepted Answer

Free ribosomes make soluble pr...

Question 3

Peroxisomes ________.

Accepted Answer

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

Question 4

What are lipid rafts? What are their functions?

Accepted Answer

They are assemblies of saturat...

Question 5

If a tRNA had an AGC anticodon,it could attach to a(n) ________ mRNA codon.

Accepted Answer

A)  UCG
B)  TCG
C)  UGA
D)  AUGE) A) and D)
F) None of the above

Question 6

A red blood cell placed in pure water would ________.

Accepted Answer

A)  neither shrink nor swell
B)  swell and burst
C)  swell initially,then shrink as equilibrium is reached
D)  shrinkE) A) and C)
F) A) and B)

Question 7

The RNA that has an anticodon and attaches to a specific amino acid is ________ RNA.

Accepted Answer

The answer of The RNA that has an anticodon and...

Question 8

When tissues are injured or infected,chemical signals can be releases that affect the plasma membrane of cells that line the nearby blood vessels.These blood vessels cells (endothelial cells) respond to the chemical signals by displaying a type of glycoproteins on their surface.These proteins will attach to circulating white blood cells bringing them to the site of injury or infection.These glycoproteins would best be described as ________.

Accepted Answer

A)  desmosomes
B)  G-proteins
C)  transport proteins
D)  Cell Adhesion Molecules (CAMs) E) None of the above
F) A) and B)

Question 9

Concentration differences cause ionic imbalances that polarize the cell membrane,and active transport processes.

Accepted Answer

A) True 
 B)False

Question 10

The lungs deliver a regular supply of oxygen to the blood,which is in turn circulated to most all the cells of the body.At the same time oxygen is consumed during aerobic cellular respiration within these cells.This implies that ________.

Accepted Answer

A)  oxygen will passively diffuse into the cells
B)  oxygen requires active transport to enter most cells
C)  the concentration gradient for oxygen is steepness inside of the cell
D)  the rate of oxygen diffusion is independent of concentrationE) B) and C)
F) None of the above

Question 11

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 12

A red blood cell would swell if its surrounding solution were ________.

Accepted Answer

The answer of A red blood cell would swell if...

Question 13

Osmosis is the passive movement of water but it follows almost completely opposite laws of physics when compared to the diffusion of ions or other small particles.

Accepted Answer

A) True 
 B)False

Question 14

Myocardium (cardiac muscle tissue) must rhythmically contract for a lifetime.This requires a considerable amount of energy production by the cells.You would expect to see a relatively high amount of which organelle in these cells?

Accepted Answer

A)  cytoskeleton
B)  smooth endoplasmic reticulum
C)  mitochondria
D)  lysosomesE) B) and C)
F) A) and C)

Question 15

Why can we say that a cell without a nucleus will ultimately die?

Accepted Answer

Without a nucleus,a cell canno...

Question 16

The myocardium (cardiac muscle tissue) undergoes a significant amount of physical stress due to its contractions.You would expect to see relatively large numbers of which of the following embedded within their plasma membrane?

Accepted Answer

A)  tight junctions
B)  desmosomes
C)  glycolipids
D)  transport proteinsE) None of the above
F) B) and C)

Question 17

Which of the following describes the plasma membrane?

Accepted Answer

A)  a phospholipid bilayer surrounding the cell
B)  a membrane composed of tiny shelves or cristae
C)  a double layer of protein enclosing the plasma
D)  a single-layered membrane that surrounds the nucleus of the cellE) A) and B)
F) All of the above

Question 18

Which of the following statements is correct regarding RNA?

Accepted Answer

A)  rRNA is always attached to the rough ER.
B)  If the base sequence of DNA is ATTGCA,the messenger RNA template will be UCCAGU.
C)  There is exactly one specific type of mRNA for each amino acid.
D)  Messenger RNA,transfer RNA,and ribosomal RNA play a role in protein synthesis.E) A) and D)
F) B) and D)

Question 19

Which of the following is not a factor that binds cells together?

Accepted Answer

A)  special membrane junctions
B)  glycoproteins in the glycocalyx
C)  glycolipids in the glycocalyx
D)  wavy contours of the membranes of adjacent cellsE) A) and B)
F) None of the above

Question 20

DNA transcription is another word for DNA replication.

Accepted Answer

A) True 
 B)False

Exam 3: Cells: the Living Units

The myocardium (cardiac muscle tissue) undergoes a significant amount of physical stress due to its contractions.You would expect to see relatively large numbers of which of the following embedded within their plasma membrane?

Correct Answer
verified

The RNA that has an anticodon and attaches to a specific amino acid is ________ RNA.

Correct Answer
verified

Which of the following describes the plasma membrane?

Correct Answer
verified

A red blood cell would swell if its surrounding solution were ________.

Correct Answer
verified

Peroxisomes ________.

Correct Answer
verified

Myocardium (cardiac muscle tissue) must rhythmically contract for a lifetime.This requires a considerable amount of energy production by the cells.You would expect to see a relatively high amount of which organelle in these cells?

Correct Answer
verified

Water may move through membrane pores constructed by transmembrane proteins called ________.

Correct Answer
verified

Osmosis is the passive movement of water but it follows almost completely opposite laws of physics when compared to the diffusion of ions or other small particles.

Correct Answer
verified

What are lipid rafts? What are their functions?

Correct Answer
verified
They are assemblies of saturat...
View Answer

DNA transcription is another word for DNA replication.

Correct Answer
verified

Correct Answer
verified

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

Correct Answer
verified

How are the products of free ribosomes different from membrane-bound ribosomes?

Correct Answer
verified
Free ribosomes make soluble pr...
View Answer

Concentration differences cause ionic imbalances that polarize the cell membrane,and active transport processes.

Correct Answer
verified

A red blood cell placed in pure water would ________.

Correct Answer
verified

If a tRNA had an AGC anticodon,it could attach to a(n) ________ mRNA codon.

Correct Answer
verified

Which of the following is not a factor that binds cells together?

Correct Answer
verified

The lungs deliver a regular supply of oxygen to the blood,which is in turn circulated to most all the cells of the body.At the same time oxygen is consumed during aerobic cellular respiration within these cells.This implies that ________.

Correct Answer
verified

Why can we say that a cell without a nucleus will ultimately die?

Correct Answer
verified
Without a nucleus,a cell canno...
View Answer

Which of the following statements is correct regarding RNA?

Correct Answer
verified

Exam 3: Cells: the Living Units

The myocardium (cardiac muscle tissue) undergoes a significant amount of physical stress due to its contractions.You would expect to see relatively large numbers of which of the following embedded within their plasma membrane?

Correct AnswerverifiedShow Answer

The RNA that has an anticodon and attaches to a specific amino acid is ________ RNA.

Correct AnswerverifiedShow Answer

Which of the following describes the plasma membrane?

Correct AnswerverifiedShow Answer

A red blood cell would swell if its surrounding solution were ________.

Correct AnswerverifiedShow Answer

Peroxisomes ________.

Correct AnswerverifiedShow Answer

Myocardium (cardiac muscle tissue) must rhythmically contract for a lifetime.This requires a considerable amount of energy production by the cells.You would expect to see a relatively high amount of which organelle in these cells?

Correct AnswerverifiedShow Answer

Water may move through membrane pores constructed by transmembrane proteins called ________.

Correct AnswerverifiedShow Answer

Osmosis is the passive movement of water but it follows almost completely opposite laws of physics when compared to the diffusion of ions or other small particles.

Correct AnswerverifiedShow Answer

What are lipid rafts? What are their functions?

Correct AnswerverifiedThey are assemblies of saturat...View AnswerShow Answer

DNA transcription is another word for DNA replication.

Correct AnswerverifiedShow Answer

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

How are the products of free ribosomes different from membrane-bound ribosomes?

Correct AnswerverifiedFree ribosomes make soluble pr...View AnswerShow Answer

Concentration differences cause ionic imbalances that polarize the cell membrane,and active transport processes.

Correct AnswerverifiedShow Answer

A red blood cell placed in pure water would ________.

Correct AnswerverifiedShow Answer

If a tRNA had an AGC anticodon,it could attach to a(n) ________ mRNA codon.

Correct AnswerverifiedShow Answer

Which of the following is not a factor that binds cells together?

Correct AnswerverifiedShow Answer

The lungs deliver a regular supply of oxygen to the blood,which is in turn circulated to most all the cells of the body.At the same time oxygen is consumed during aerobic cellular respiration within these cells.This implies that ________.

Correct AnswerverifiedShow Answer

Why can we say that a cell without a nucleus will ultimately die?

Correct AnswerverifiedWithout a nucleus,a cell canno...View AnswerShow Answer

Which of the following statements is correct regarding RNA?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
They are assemblies of saturat...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Free ribosomes make soluble pr...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Without a nucleus,a cell canno...
View Answer

Correct Answer
verified