Question 1

The structural and functional unit of all living organisms is the

Accepted Answer

A)  cell.
B)  plasma membrane.
C)  organelle.
D)  ribosome.
E)  organ.F) B) and D)
G) D) and E)

Question 2

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

Accepted Answer

A)  microvilli
B)  flagella
C)  centrioles
D)  cilia
E)  spindle fibersF) A) and B)
G) A) and D)

Question 3

Which of the following activities is associated with lysosomes?

Accepted Answer

A)  energy production
B)  destruction of nonfunctional organelles
C)  intracellular support
D)  endocytosis
E)  exocytosisF) A) and C)
G) C) and D)

Question 4

Which of the following is CORRECTLY matched with its function?

Accepted Answer

A)  cell identity molecules - are primarily steroids
B)  receptor proteins - move specific ions or molecules using ATP
C)  carrier proteins - move bound ions or molecules from one side of the membrane to the other
D)  channel proteins - catalyze chemical reactions inside the cell
E)  peripheral proteins - penetrate the lipid bilayer from one surface to the otherF) A) and E)
G) None of the above

Question 5

Which of the following cell organelles is CORRECTLY matched with its function?

Accepted Answer

A)  ribosome - energy production
B)  microtubules - cell support
C)  mitochondria - protein synthesis
D)  smooth ER - ATP production
E)  nucleolus - contains the genetic material of the cellF) B) and E)
G) A) and B)

Question 6

Transcription

Accepted Answer

A)  occurs at the ribosomes.
B)  synthesizes RNA from DNA.
C)  synthesizes DNA from RNA.
D)  copies information from mRNA to tRNA.
E)  requires three types of RNA.F) A) and E)
G) C) and E)

Question 7

Which of the following is NOT true of G-protein complex action?

Accepted Answer

A)  Stimulates a cell by means of extracellular chemical signals.
B)  Stimulates a cell by opening ion channels in the plasma membrane.
C)  Acts as an intermediate between a receptor and other cellular proteins.
D)  Stimulates a cell by activating enzymes associated with the plasma membrane.
E)  Stimulates a cell by means of intracellular chemical signals.F) A) and E)
G) B) and C)

Question 8

Arrange the following in correct sequence: (1) protein moves through ER and then carried in vesicles to Golgi apparatus
(2) vesicle pinches off from the Golgi apparatus and carries product to plasma membrane
(3) Golgi apparatus modifies protein and then packages them into vesicles
(4) protein made by ribosomes on rough ER

Accepted Answer

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

Question 9

-Answer these questions about chromosome structure.What does "A" represent?

Accepted Answer

A)  proteins
B)  chromosome
C)  chromatid
D)  chromatin
E)  centromereF) B) and E)
G) B) and C)

Question 10

-Answer these questions about chromosome structure.What does "D" represent?

Accepted Answer

A)  chromosome
B)  proteins
C)  chromatin
D)  centromere
E)  chromatidF) A) and E)
G) A) and D)

Question 11

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 inside the cell.
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 these choices are correct.F) C) and D)
G) A) and D)

Question 12

The function of the Golgi apparatus is

Accepted Answer

A)  packaging and distribution of proteins and lipids.
B)  production of microtubules.
C)  DNA replication.
D)  energy production.
E)  excretion of excess salt.F) B) and E)
G) D) and E)

Question 13

A mRNA containing introns is a

Accepted Answer

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

Question 14

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

Accepted Answer

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

Question 15

Which of the following is NOT true of a gene?

Accepted Answer

A)  It is all the triplets needed to make a functional RNA or protein.
B)  It is a segment of a DNA molecule.
C)  Each chromosome contains one gene.
D)  It is the functional unit of heredity.
E)  All of these are true of a gene.F) B) and E)
G) A) and B)

Question 16

-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 "D"?

Accepted Answer

A)  major site of ATP synthesis when oxygen is available
B)  contains digestive enzymes
C)  outer boundary of cell,controls entry and exit of substances
D)  directs cellular activities,contains DNA
E)  site of protein synthesisF) None of the above
G) C) and E)

Question 17

Cells that respond to ligands

Accepted Answer

A)  are using electrical signals in cellular communication.
B)  generally produce the ligands.
C)  possess receptor sites for specific ligands.
D)  are not functional.
E)  have lysosomes that destroy the ligands.F) A) and C)
G) A) and E)

Question 18

A cancer that is able to spread and become worse is called

Accepted Answer

A)  benign
B)  metastasis
C)  malignant
D)  carcinoma
E)  sarcomaF) C) and D)
G) A) and E)

Question 19

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 D)
G) A) and B)

Question 20

Membrane proteins that extend into the lipid bilayer are called

Accepted Answer

A)  integral proteins.
B)  lipoproteins.
C)  peripheral proteins.
D)  glycoproteins.
E)  extrinsic proteins.F) A) and C)
G) B) and E)

Exam 3: Cell Biology

A cancer that is able to spread and become worse is called

Correct Answer
verified

Which of the following cell organelles is CORRECTLY matched with its function?

Correct Answer
verified

Transcription

Correct Answer
verified

The structural and functional unit of all living organisms is the

Correct Answer
verified

Which of the following is NOT true of G-protein complex action?

Correct Answer
verified

Cells that respond to ligands

Correct Answer
verified

-Answer these questions about chromosome structure.What does "A" represent?

Correct Answer
verified

-Answer these questions about chromosome structure.What does "D" represent?

Correct Answer
verified

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

Correct Answer
verified

Which of the following is CORRECTLY matched with its function?

Correct Answer
verified

-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 "D"?

Correct Answer
verified

The function of the Golgi apparatus is

Correct Answer
verified

Which of the following is NOT true of a gene?

Correct Answer
verified

Plasma membrane phospholipids

Correct Answer
verified

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

Correct Answer
verified

Membrane proteins that extend into the lipid bilayer are called

Correct Answer
verified

Correct Answer
verified

Which of the following activities is associated with lysosomes?

Correct Answer
verified

A mRNA containing introns is a

Correct Answer
verified

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

Correct Answer
verified

Exam 3: Cell Biology

A cancer that is able to spread and become worse is called

Correct AnswerverifiedShow Answer

Which of the following cell organelles is CORRECTLY matched with its function?

Correct AnswerverifiedShow Answer

Transcription

Correct AnswerverifiedShow Answer

The structural and functional unit of all living organisms is the

Correct AnswerverifiedShow Answer

Which of the following is NOT true of G-protein complex action?

Correct AnswerverifiedShow Answer

Cells that respond to ligands

Correct AnswerverifiedShow Answer

-Answer these questions about chromosome structure.What does "A" represent?

Correct AnswerverifiedShow Answer

-Answer these questions about chromosome structure.What does "D" represent?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following is CORRECTLY matched with its function?

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 "D"?

Correct AnswerverifiedShow Answer

The function of the Golgi apparatus is

Correct AnswerverifiedShow Answer

Which of the following is NOT true of a gene?

Correct AnswerverifiedShow Answer

Plasma membrane phospholipids

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Membrane proteins that extend into the lipid bilayer are called

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following activities is associated with lysosomes?

Correct AnswerverifiedShow Answer

A mRNA containing introns is a

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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