Question 1

Nucleoli

Accepted Answer

A)   are located in the cytoplasm.
B)   produce ribosomal subunits.
C)   have a distinct membrane.
D)   are important for the formation of the Golgi apparatus.
E)   regulate movement of materials into the nucleus.F) A) and C)
G) B) and E)

Question 2

The movement of oxygen from the alveoli of the lungs into the bloodstream is an example of ________.

Accepted Answer

A)   diffusion
B)   osmosis
C)   active transport
D)   bulk transport
E)   facilitated diffusionF) All of the above
G) D) and E)

Question 3

Which of the following events occurs in the nucleus?

Accepted Answer

A)   ATP synthesis
B)   Ribosomal proteins formed
C)   Chromatin condenses to form chromosomes
D)   Production of phospholipids
E)   None of the choices are correct.F) A) and B)
G) A) and C)

Question 4

Chromosomes begin migrating towards poles of the cell during ________.

Accepted Answer

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

Question 5

The cytoplasm is made up of ________.

Accepted Answer

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

Question 6

Which type of membrane proteins have an exposed site on the outer cell surface that can attach to a ligand?

Accepted Answer

A)   Marker molecules
B)   Channel protein
C)   Receptor proteins
D)   Enzymes
E)   Carrier proteinsF) D) and E)
G) A) and C)

Question 7

Some cancer cells have mutations in the p53 gene, often called the guardian of the genome. It normally functions to repair damaged DNA or cause the elimination of severely altered cells. Which of the following functions is likely regulated by p53?

Accepted Answer

A)   Anaerobic respiration
B)   Translation
C)   Apoptosis
D)   Both "anaerobic respiration" and "translation" are correct.E) All of the above
F) B) and C)

Question 8

The intracellular digestive organelle of a cell is the ________.

Accepted Answer

A)   lysosome
B)   microtubule
C)   lipochrome
D)   rough endoplasmic reticulum
E)   smooth endoplasmic reticulumF) None of the above
G) B) and E)

Question 9

Three adjacent nucleotides in mRNA are called a ________.

Accepted Answer

A)   pre-mRNA
B)   proenzyme
C)   gene
D)   ribosomal RNA (rRN
A)  
E)   codonF) A) and C)
G) C) and D)

Question 10

Large molecules move across the plasma membrane with the help or assistance of protein carriers. This type of transport is generally called ________.

Accepted Answer

A)   Mediated transport
B)   Active transport
C)   Passive transport
D)   Vesicular transportE) A) and B)
F) A) and C)

Question 11

Which of the following activities is a function of the plasma membrane?

Accepted Answer

A)   Digestion of unneeded cell organelles
B)   Recognition of bacterial cells by the immune system
C)   Transport of products from the nucleus to the endoplasmic reticulum
D)   Cell metabolism
E)   DetoxificationF) C) and D)
G) A) and B)

Question 12

DNA replication results in two new DNA molecules. Each of these new molecules

Accepted Answer

A)   has two newly synthesized strands of nucleotides.
B)   has one strand of nucleotides from the parent DNA and one newly synthesized strand of nucleotides.
C)   has two strands of nucleotides from the parent.
D)   has a single strand of nucleotides.
E)   are incomplete copies of the original.F) All of the above
G) C) and E)

Question 13

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

Accepted Answer

A)   rupturing the lysosomes in the cell.
B)   increasing the number of mitochondria.
C)   decreasing nuclear size.
D)   removing some of the ribosomes.
E)   increasing protein synthesis.F) A) and B)
G) None of the above

Question 14

Which of the following events occurs in the secondary active transport of glucose?

Accepted Answer

A)   Na+ ions and glucose are cotransported by the same carrier molecule.
B)   The Na+-K+ pump maintains a Na+ concentration gradient across the plasma membrane.
C)   Energy comes from diffusion of Na+ down their concentration gradient.
D)   Glucose is moved against its concentration gradient into the cell.
E)   All of the choices are correct.F) None of the above
G) B) and D)

Question 15

The RNA molecule that is synthesized in the nucleus from a DNA template is ________.

Accepted Answer

A)   tRNA
B)   mRNA
C)   rRNA
D)   All of the choices are correct.E) C) and D)
F) None of the above

Question 16

Which type of cell would have an abundance of peroxisomes?

Accepted Answer

A)   White blood cell, a phagocyte
B)   Mucus cell (secretes mucus) 
C)   Liver cells that detoxify hydrogen peroxide
D)   Cardiac muscle cells (require large amounts of ATP) 
E)   Fibroblast (makes protein fibers) F) All of the above
G) A) and B)

Question 17

-What structure does "E" represent on the diagram of the plasma membrane?

Accepted Answer

A)   Membrane channel protein
B)   Phospholipid bilayer
C)   Internal membrane surface
D)   Peripheral protein
E)   Receptor proteinF) B) and D)
G) A) and C)

Question 18

In ________, ions or molecules move in opposite directions.

Accepted Answer

A)   symport
B)   uniport
C)   antiport
D)   comport
E)   ionportF) C) and D)
G) D) and E)

Question 19

The aroma of cookies baking in the kitchen reaches you in the living room. The distribution of this odor throughout the house is an example of ________.

Accepted Answer

A)   active transport
B)   dialysis
C)   osmosis
D)   filtration
E)   diffusionF) C) and D)
G) B) and E)

Question 20

If the amino acid coding region of an mRNA molecule is 1800 nucleotides (bases)  in length, this molecule will contain ________ codons.

Accepted Answer

A)   400
B)   600
C)   800
D)   900
E)   1200F) C) and E)
G) B) and E)

Exam 3: Cell Biology

DNA replication results in two new DNA molecules. Each of these new molecules

Correct AnswerverifiedShow Answer

If the amino acid coding region of an mRNA molecule is 1800 nucleotides (bases) in length, this molecule will contain ________ codons.

Correct AnswerverifiedShow Answer

Large molecules move across the plasma membrane with the help or assistance of protein carriers. This type of transport is generally called ________.

Correct AnswerverifiedShow Answer

The intracellular digestive organelle of a cell is the ________.

Correct AnswerverifiedShow Answer

Which type of membrane proteins have an exposed site on the outer cell surface that can attach to a ligand?

Correct AnswerverifiedShow Answer

The movement of oxygen from the alveoli of the lungs into the bloodstream is an example of ________.

Correct AnswerverifiedShow Answer

Three adjacent nucleotides in mRNA are called a ________.

Correct AnswerverifiedShow Answer

In ________, ions or molecules move in opposite directions.

Correct AnswerverifiedShow Answer

The cytoplasm is made up of ________.

Correct AnswerverifiedShow Answer

The RNA molecule that is synthesized in the nucleus from a DNA template is ________.

Correct AnswerverifiedShow Answer

Which of the following events occurs in the nucleus?

Correct AnswerverifiedShow Answer

Which of the following events occurs in the secondary active transport of glucose?

Correct AnswerverifiedShow Answer

The aroma of cookies baking in the kitchen reaches you in the living room. The distribution of this odor throughout the house is an example of ________.

Correct AnswerverifiedShow Answer

Which type of cell would have an abundance of peroxisomes?

Correct AnswerverifiedShow Answer

Chromosomes begin migrating towards poles of the cell during ________.

Correct AnswerverifiedShow Answer

Nucleoli

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Which of the following activities is a function of the plasma membrane?

Correct AnswerverifiedShow Answer

-What structure does "E" represent on the diagram of the plasma membrane?

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

Correct AnswerverifiedShow Answer

Some cancer cells have mutations in the p53 gene, often called the guardian of the genome. It normally functions to repair damaged DNA or cause the elimination of severely altered cells. Which of the following functions is likely regulated by p53?

Correct AnswerverifiedShow Answer

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