Question 1

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

Accepted Answer

A)  crenated
B)  hypotonic solution
C)  isotonic solution
D)  hypertonic solution
E)  hemolyzedF) None of the above
G) A) and B)

Question 2

The second most abundant of the lipids in the plasma membrane is/are

Accepted Answer

A)  glycolipids.
B)  triglycerides.
C)  phospholipids.
D)  saturated fats.
E)  cholesterol.F) C) and D)
G) A) and B)

Question 3

The plasma membrane

Accepted Answer

A)  is not permeable.
B)  regulates movement of materials into and out of the cell.
C)  has a single layer of phospholipids.
D)  is a rigid protein membrane.
E)  separates the nucleus from the rest of the cell.F) B) and C)
G) All of the above

Question 4

Vitamin A,a fat-soluble vitamin,would move across the plasma membrane into the cell

Accepted Answer

A)  through vitamin membrane channels.
B)  in vesicles.
C)  by dissolving in the lipid bilayer.
D)  by active transport.
E)  by transport with carrier molecules.F) B) and C)
G) A) and E)

Question 5

Which of the following is NOT associated with interphase?

Accepted Answer

A)  The centrioles duplicate.
B)  The cell grows.
C)  The cell does nothing but rest.
D)  The cell does what it is designed to do.
E)  The DNA replicates.F) A) and D)
G) B) and C)

Question 6

What organelles are the sites of protein synthesis?

Accepted Answer

A)  nucleus
B)  centrioles
C)  lysosomes
D)  mitochondria
E)  ribosomesF) C) and E)
G) A) and B)

Question 7

The centrioles are found in a zone of cytoplasm close to the nucleus called the

Accepted Answer

A)  vacuole.
B)  cytogel.
C)  centrosome.
D)  cytosol.
E)  proteasome.F) A) and B)
G) B) and D)

Question 8

Messenger RNA

Accepted Answer

A)  is synthesized when a portion of a DNA molecule is transcribed.
B)  directs the synthesis of DNA.
C)  is not involved in the synthesis of proteins.
D)  determines the sequence of nucleotides in the anticodons of tRNA.
E)  directs the synthesis of centrioles in the cytoplasm.F) All of the above
G) C) and E)

Question 9

Chromatin condenses and nucleoli disappear during

Accepted Answer

A)  prophase.
B)  interphase.
C)  telophase.
D)  metaphase.
E)  anaphase.F) A) and D)
G) All of the above

Question 10

Check all that occur at the cellular level as a result of aging.
_____ Cells experience increased metabolic functions.
__X__ Cells experience a decreased ability to maintain homeostasis.
__X__ The process of cell division becomes faulty,resulting in a greater risk for cancer.
_____

Accepted Answer

The risk for unsucce...

Question 11

The cytoplasm is made up of

Accepted Answer

A)  organelles.
B)  Both cytogel and organelles.
C)  Both cytosol and organelles.
D)  cytosol.
E)  cytogel.F) B) and E)
G) C) and D)

Question 12

The plasma membrane is selectively permeable.This means

Accepted Answer

A)  substances need permission to pass through it.
B)  ATP is always needed to move molecules across the plasma membrane.
C)  substances need carrier molecules to pass through it.
D)  only gases and water can pass through it.
E)  only certain substances can pass through it.F) A) and E)
G) A) and D)

Question 13

Ion movement across the plasma membrane creates an electrical charge difference known as ______.

Accepted Answer

A)   extracellular glycocalyx
B)   transcription
C)   respiration
D)   membrane potentialE) All of the above
F) B) and D)

Question 14

What type of membrane proteins can catalyze chemical reactions on the inner or outer surfaces of the plasma membrane?

Accepted Answer

A)  channel protein
B)  carrier proteins
C)  receptor proteins
D)  enzymes
E)  marker moleculesF) C) and D)
G) A) and C)

Question 15

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

Accepted Answer

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

Question 16

Large molecules move across cell membrane with the help or assistance of protein carriers.This type of transport is generically called _______.

Accepted Answer

A)   mediated transport
B)   passive transport
C)   active transportD) All of the above
E) B) and C)

Question 17

The lower limit of resolution of a light microscope is

Accepted Answer

A)  1.0 μ\muμ m
B)  0.01 μ\muμ m
C)  100 μ\muμ m
D)  0.1 μ\muμ m
E)  10 μ\muμ m F) B) and E)
G) C) and D)

Question 18

Genes that play a role in the regulation of mitosis are called

Accepted Answer

A)  proto-oncogenes.
B)  apoptogenes.
C)  oncogenes.
D)  mutagens.
E)  basal cells.F) C) and D)
G) A) and D)

Question 19

Posttranscriptional processing is the modification of

Accepted Answer

A)  DNA.
B)  proteins to form pro-proteins.
C)  mRNA to form tRNA.
D)  exons to form introns.
E)  pre-mRNA to form functional mRNA.F) B) and D)
G) B) and C)

Question 20

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) A) and B)
G) A) and C)

Exam 3: Cell Biology

Messenger RNA

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Posttranscriptional processing is the modification of

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Vitamin A,a fat-soluble vitamin,would move across the plasma membrane into the cell

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The second most abundant of the lipids in the plasma membrane is/are

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The cytoplasm is made up of

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The plasma membrane

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

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What type of membrane proteins can catalyze chemical reactions on the inner or outer surfaces of the plasma membrane?

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Which of the following is NOT associated with interphase?

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Check all that occur at the cellular level as a result of aging. _____ Cells experience increased metabolic functions. __X__ Cells experience a decreased ability to maintain homeostasis. __X__ The process of cell division becomes faulty,resulting in a greater risk for cancer. _____

Correct AnswerverifiedThe risk for unsucce...View AnswerShow Answer

Chromatin condenses and nucleoli disappear during

Correct AnswerverifiedShow Answer

Ion movement across the plasma membrane creates an electrical charge difference known as ______.

Correct AnswerverifiedShow Answer

The lower limit of resolution of a light microscope is

Correct AnswerverifiedShow Answer

The centrioles are found in a zone of cytoplasm close to the nucleus called the

Correct AnswerverifiedShow Answer

Genes that play a role in the regulation of mitosis are called

Correct AnswerverifiedShow Answer

What organelles are the sites of protein synthesis?

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

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Large molecules move across cell membrane with the help or assistance of protein carriers.This type of transport is generically called _______.

Correct AnswerverifiedShow Answer

The plasma membrane is selectively permeable.This means

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

Correct AnswerverifiedShow Answer

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Check all that occur at the cellular level as a result of aging. _ Cells experience increased metabolic functions. X Cells experience a decreased ability to maintain homeostasis. X The process of cell division becomes faulty,resulting in a greater risk for cancer. _

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The risk for unsucce...
View Answer

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