Question 1

-Red blood cells (RBCs)  have been placed in three different solutions: hypotonic, hypertonic, isotonic. What is solution "C" relative to the RBC?

Accepted Answer

A)   isotonic solution
B)   crenated
C)   hypertonic solution
D)   hemolyzed
E)   hypotonic solutionF) A) and E)
G) A) and D)

Question 2

A symporter will transport _____ across the cell membrane.

Accepted Answer

A)   two different ions or molecules in opposite directions
B)   two of the same ions or molecules in the same direction
C)   two different ions or molecules in the same direction
D)   two of the same ions or molecules in opposite directions
E)   one specific ion or moleculeF) C) and D)
G) B) and E)

Question 3

Plasma membrane phospholipids

Accepted Answer

A)   have tails that face the exterior of the membrane.
B)   have a hydrophilic head and hydrophobic tails.
C)   have polar (charged)  tails.
D)   are arranged in a single layer.
E)   are 95% cholesterol.F) B) and C)
G) A) and E)

Question 4

A DNA nucleotide sequence that signals the beginning of a gene is called a

Accepted Answer

A)   promoter.
B)   transcription factor.
C)   terminator.
D)   RNA polymerase.
E)   triplet.F) D) and E)
G) B) and E)

Question 5

Experimental manipulation to increase the energy output of the cell might include

Accepted Answer

A)   increasing protein synthesis.
B)   rupturing the lysosomes in the cell.
C)   decreasing nuclear size.
D)   increasing the number of mitochondria.
E)   removing some of the ribosomes.F) C) and E)
G) D) and E)

Question 6

In prophase

Accepted Answer

A)   cytokinesis occurs.
B)   DNA is synthesized.
C)   the chromosomes replicate.
D)   the chromosomes condense, shorten, and thicken.
E)   the spindle fibers disappear.F) B) and E)
G) C) and D)

Question 7

Determine the sequence of the following events in a cell after exposure of the cell to a chemical signal. (1)  increased synthesis of a protein
(2)  the chemical signal combined with a cytoplasmic receptor
(3)  an increase in the nuclear concentration of the chemical
(4)  an increase in mRNA synthesis
(5)  genes are activated

Accepted Answer

A)   1, 2, 3, 4, 5
B)   2, 1, 3, 5, 4
C)   2, 4, 5, 3, 2
D)   2, 3, 5, 4, 1
E)   2, 3, 4, 5, 1F) D) and E)
G) A) and B)

Exam 3: Cell Biology

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Plasma membrane phospholipids

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In prophase

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-Red blood cells (RBCs) have been placed in three different solutions: hypotonic, hypertonic, isotonic. What is solution "C" relative to the RBC?

Correct Answer
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A DNA nucleotide sequence that signals the beginning of a gene is called a

Correct Answer
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Experimental manipulation to increase the energy output of the cell might include

Correct Answer
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A symporter will transport _____ across the cell membrane.

Correct Answer
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Exam 3: Cell Biology

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Plasma membrane phospholipids

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In prophase

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-Red blood cells (RBCs) have been placed in three different solutions: hypotonic, hypertonic, isotonic. What is solution "C" relative to the RBC?

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A DNA nucleotide sequence that signals the beginning of a gene is called a

Correct AnswerverifiedShow Answer

Experimental manipulation to increase the energy output of the cell might include

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A symporter will transport _____ across the cell membrane.

Correct AnswerverifiedShow Answer

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Correct Answer
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Correct Answer
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