Question 1

What type of attachment proteins attach cells to extracellular molecules?

Accepted Answer

A)   ligands
B)   integrins
C)   adherins
D)   cadherinsE) None of the above
F) A) and B)

Question 2

Communication between cells occurs when chemical messengers from one cell bind to _____ on another cell.

Accepted Answer

A)   channel proteins
B)   receptor proteins
C)   marker molecules
D)   second messengers
E)   integrinsF) A) and D)
G) D) and E)

Question 3

Cytokinesis is completed at the end of this phase.

Accepted Answer

A)   interphase
B)   prophase
C)   metaphase
D)   anaphase
E)   telophaseF) A) and E)
G) B) and C)

Question 4

The collection of carbohydrates, glycolipids, and glycoproteins of the plasma membrane is called the

Accepted Answer

A)   fluid mosaic.
B)   extracellular membrane.
C)   intercellular fluid.
D)   phospholipid.
E)   glycocalyx.F) B) and E)
G) All of the above

Question 5

Which of the following is NOT a type of cancer therapy?

Accepted Answer

A)   killing tissue with x-rays
B)   killing tissue with lasers
C)   surgical removal of the tissue
D)   use of drugs to kill cells
E)   use of drugs to increase the blood supply to the tumorF) A) and C)
G) A) and E)

Question 6

The movement of water through a selectively permeable membrane is called

Accepted Answer

A)   active transport.
B)   diffusion.
C)   endocytosis.
D)   facilitated diffusion.
E)   osmosis.F) C) and E)
G) A) and B)

Question 7

In DNA replication,

Accepted Answer

A)   the leading strand is formed as a continuous strand.
B)   new nucleotides are added at the 5' end of the growing DNA strand.
C)   DNA polymerase splices the short segments of the lagging strand together.
D)   only introns are replicated.
E)   the two existing strands are not used as templates.F) A) and B)
G) B) and E)

Question 8

Receptor-mediated endocytosis

Accepted Answer

A)   does not need ATP; the receptors supply the energy.
B)   exhibits specificity.
C)   occurs if oxygen is available.
D)   is a type of passive transport.
E)   moves materials out of the cell.F) B) and D)
G) A) and E)

Question 9

What molecule(s)  cause(s)  a portion of a DNA molecule to unwind for transcription?

Accepted Answer

A)   RNA ploymerase
B)   transcription factors
C)   spliceosomes
D)   poly-A tail
E)   7-methylguanosine capF) B) and D)
G) B) and E)

Question 10

A mRNA containing introns is a

Accepted Answer

A)   pre-mRNA.
B)   proenzyme.
C)   gene.
D)   ribosomal RNA (rRN
A)  .
E)   codon.F) C) and E)
G) All of the above

Question 11

-The cell is the basic unit of life. All cellular structures exhibit special functions. Match the structure with its function. What is the function of "C"?

Accepted Answer

A)   directs cellular activities, contains DNA
B)   contains digestive enzymes
C)   outer boundary of cell, controls entry and exit of substances
D)   major site of ATP synthesis when oxygen is available
E)   site of protein synthesisF) C) and D)
G) All of the above

Question 12

If 0.9% NaCl (saline)  solution is isotonic to a cell, then a 0.5% saline solution

Accepted Answer

A)   is hypertonic to the cell.
B)   will cause crenation of the cell.
C)   is hypotonic to the cell.
D)   will shrink the cell.
E)   will not affect the cell.F) B) and E)
G) A) and C)

Question 13

Of the organelles listed, which one does NOT contain microtubules?

Accepted Answer

A)   cilia
B)   flagella
C)   centrioles
D)   microvilli
E)   spindle fibersF) None of the above
G) A) and B)

Question 14

Active transport

Accepted Answer

A)   follows osmotic pressure gradients.
B)   can move substances along their concentration gradient.
C)   does not require metabolic energy (ATP) .
D)   involves vesicle formation.
E)   requires ATP.F) B) and D)
G) B) and E)

Question 15

Glycolipids would contain both lipids and

Accepted Answer

A)   carbohydrates.
B)   proteins.
C)   electrolytes.
D)   cholesterol.
E)   amino acids.F) All of the above
G) D) and E)

Question 16

In which part of the cell cycle do chromosomes align along the equator?

Accepted Answer

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

Question 17

What type of cell has abundant ribosomes?

Accepted Answer

A)   white blood cell, a phagocyte
B)   red blood cell (transports oxygen) 
C)   liver cells that detoxify hydrogen peroxide
D)   cardiac muscle cells (require large amounts of ATP) 
E)   fibroblast (makes protein fibers) F) A) and E)
G) A) and B)

Question 18

Which of the following is NOT an example of a cytoplasmic inclusion?

Accepted Answer

A)   lipochrome
B)   hemoglobin
C)   actin filaments
D)   melanin
E)   lipid dropletsF) A) and C)
G) B) and E)

Question 19

Plasma membrane phospholipids

Accepted Answer

A)   have nonpolar fatty acid tails.
B)   form a bilayer.
C)   have polar phosphate heads.
D)   create a selectively permeable barrier.
E)   All of these choices are correct.F) A) and E)
G) B) and E)

Question 20

What organelle contains the chromosomes?

Accepted Answer

A)   nucleus
B)   ribosomes
C)   lysosomes
D)   mitochondria
E)   centriolesF) B) and D)
G) A) and E)

Exam 3: Cell Biology

Communication between cells occurs when chemical messengers from one cell bind to _____ on another cell.

Correct AnswerverifiedShow Answer

Cytokinesis is completed at the end of this phase.

Correct AnswerverifiedShow Answer

A mRNA containing introns is a

Correct AnswerverifiedShow Answer

The movement of water through a selectively permeable membrane is called

Correct AnswerverifiedShow Answer

Active transport

Correct AnswerverifiedShow Answer

Of the organelles listed, which one does NOT contain microtubules?

Correct AnswerverifiedShow Answer

Which of the following is NOT an example of a cytoplasmic inclusion?

Correct AnswerverifiedShow Answer

Glycolipids would contain both lipids and

Correct AnswerverifiedShow Answer

What type of cell has abundant ribosomes?

Correct AnswerverifiedShow Answer

-The cell is the basic unit of life. All cellular structures exhibit special functions. Match the structure with its function. What is the function of "C"?

Correct AnswerverifiedShow Answer

Which of the following is NOT a type of cancer therapy?

Correct AnswerverifiedShow Answer

What type of attachment proteins attach cells to extracellular molecules?

Correct AnswerverifiedShow Answer

Plasma membrane phospholipids

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What organelle contains the chromosomes?

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What molecule(s) cause(s) a portion of a DNA molecule to unwind for transcription?

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The collection of carbohydrates, glycolipids, and glycoproteins of the plasma membrane is called the

Correct AnswerverifiedShow Answer

If 0.9% NaCl (saline) solution is isotonic to a cell, then a 0.5% saline solution

Correct AnswerverifiedShow Answer

In DNA replication,

Correct AnswerverifiedShow Answer

Receptor-mediated endocytosis

Correct AnswerverifiedShow Answer

In which part of the cell cycle do chromosomes align along the equator?

Correct AnswerverifiedShow Answer

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