Question 1

The phase of mitosis that begins as spindle fibers pull sister chromatids apart at the centromere is

Accepted Answer

A)  metaphase.
B)  anaphase.
C)  telophase.
D)  prophase.
E)  interphase.F) A) and D)
G) A) and B)

Question 2

The subunits of ribosomes are exported outside the nucleus into the cytoplasm,where they are assembled into their finished product.

Accepted Answer

A) True 
 B)False

Question 3

Nuclear ____________ are open passageways that penetrate fused regions of the double membrane of the nuclear envelope.

Accepted Answer

The answer of Nuclear ____________ are open passageways that penetrate...

Question 4

Glycolipids are found on the

Accepted Answer

A)  outer layer of the cell membrane,and they help make the sticky sugar coating on its surface.
B)  middle layer of the cell membrane,and they function to transmit solutes through the membrane.
C)  inner layer of the cell membrane,and they provide scaffold support to the cell membrane.
D)  inside of the cell,where they are a source of high-energy nutrition to power mitochondria.E) A) and B)
F) None of the above

Question 5

If the sequence of DNA nucleotides being read is TTACTG,then transcription results in the formation of the sequence

Accepted Answer

A)  AAUGAC.
B)  TTUGUC.
C)  GTCATT.
D)  TTACTG.
E)  AAAGGG.F) All of the above
G) D) and E)

Question 6

Over time diffusion results in the even distribution of a substance throughout an area.

Accepted Answer

A) True 
 B)False

Question 7

Which is not a membrane-bound organelle

Accepted Answer

A)  Endoplasmic reticulum
B)  Lysosome
C)  Golgi apparatus
D)  Peroxisome
E)  All of the choices are membrane-bound organelles.F) C) and E)
G) C) and D)

Question 8

The fluid contained in the nucleus is the _________.

Accepted Answer

The answer of The fluid contained in the nucleus is...

Question 9

DNA is organized into discrete units called ____________ that provide information for the production of specific proteins.

Accepted Answer

The answer of DNA is organized into discrete units called...

Question 10

The building blocks that form the DNA double helix are called

Accepted Answer

A)  nucleoli.
B)  nucleotides.
C)  steroid bases.
D)  nitrogenous acids.
E)  nuclear pores.F) A) and C)
G) B) and E) B

Question 11

The _____________ proteins are those that are not embedded in the membrane lipid bilayer but are attached loosely to its external and internal surfaces.

Accepted Answer

The answer of The _____________ proteins are those that are...

Question 12

To maintain a resting membrane potential,the sodium-potassium pump

Accepted Answer

A)  actively transports 3 sodium ions out of the cell and 2 potassium ions into the cell.
B)  passively transports 3 sodium ions out of the cell and 2 potassium ions into the cell.
C)  actively transports 3 potassium ions out of the cell and 2 sodium ions into the cell.
D)  passively transports 3 potassium ions out of the cell and 2 sodium ions into the cell.E) All of the above
F) B) and D) A

Question 13

Which of the following is considered a required enzyme for the process of transcription

Accepted Answer

A)  Aminoacyl-tRNA synthetase
B)  DNA polymerase
C)  RNA polymerase
D)  Amine transferaseE) A) and C)
F) None of the above

Question 14

Which is not considered part of the cytoplasm

Accepted Answer

A)  Cytosol
B)  Nucleus
C)  Organelles
D)  InclusionsE) A) and B)
F) C) and D)

Question 15

The term "codon" refers to

Accepted Answer

A)  a three-nucleotide sequence of DNA that codes for a protein.
B)  an amino acid that is coded for by three bases of DNA.
C)  a three-base sequence of mRNA.
D)  the part of a rRNA molecule where a new amino acid is added.
E)  the part of tRNA that is a triplet of bases that forms hydrogen bonds with complementary sequences.F) B) and E)
G) B) and D)

Question 16

If the nutrient glycogen is found stored inside a cell,it is considered a(n)

Accepted Answer

A)  inclusion.
B)  membrane-bound organelle.
C)  non-membrane-bound organelle.
D)  pigment.E) A) and B)
F) A) and C) A

Question 17

Mucus is moved along the lining of the trachea by extensions from cell membranes known as

Accepted Answer

A)  cilia.
B)  flagella.
C)  microvilli.
D)  stereovilli.E) A) and B)
F) None of the above

Question 18

The sodium-potassium pump moves both potassium and sodium down their concentration gradients,from higher to lower concentration.The sodium-potassium pump moves both potassium and sodium up their concentration gradients,from lower to higher concentration.

Accepted Answer

A) True 
 B)False

Question 19

When fertilization occurs,the sperm recognizes the egg by

Accepted Answer

A)  the chemical messages the egg secretes into the interstitial space.
B)  the unique glycocalyx on the egg's surface.
C)  the much larger relative size of the egg.
D)  the strong acidity of the egg's environment.E) None of the above
F) A) and C)

Question 20

The process of programmed cell death ("cell suicide")is known as __________.

Accepted Answer

The answer of The process of programmed cell death ("cell...

Exam 4: Biology of the Cell

The phase of mitosis that begins as spindle fibers pull sister chromatids apart at the centromere is

Correct AnswerverifiedShow Answer

The subunits of ribosomes are exported outside the nucleus into the cytoplasm,where they are assembled into their finished product.

Correct AnswerverifiedShow Answer

Nuclear ____________ are open passageways that penetrate fused regions of the double membrane of the nuclear envelope.

Correct AnswerverifiedShow Answer

Glycolipids are found on the

Correct AnswerverifiedShow Answer

If the sequence of DNA nucleotides being read is TTACTG,then transcription results in the formation of the sequence

Correct AnswerverifiedShow Answer

Over time diffusion results in the even distribution of a substance throughout an area.

Correct AnswerverifiedShow Answer

Which is not a membrane-bound organelle

Correct AnswerverifiedShow Answer

The fluid contained in the nucleus is the _________.

Correct AnswerverifiedShow Answer

DNA is organized into discrete units called ____________ that provide information for the production of specific proteins.

Correct AnswerverifiedShow Answer

The building blocks that form the DNA double helix are called

Correct AnswerverifiedB

The _____________ proteins are those that are not embedded in the membrane lipid bilayer but are attached loosely to its external and internal surfaces.

Correct AnswerverifiedShow Answer

To maintain a resting membrane potential,the sodium-potassium pump

Correct AnswerverifiedA

Which of the following is considered a required enzyme for the process of transcription

Correct AnswerverifiedShow Answer

Which is not considered part of the cytoplasm

Correct AnswerverifiedShow Answer

The term "codon" refers to

Correct AnswerverifiedShow Answer

If the nutrient glycogen is found stored inside a cell,it is considered a(n)

Correct AnswerverifiedA

Mucus is moved along the lining of the trachea by extensions from cell membranes known as

Correct AnswerverifiedShow Answer

The sodium-potassium pump moves both potassium and sodium down their concentration gradients,from higher to lower concentration.The sodium-potassium pump moves both potassium and sodium up their concentration gradients,from lower to higher concentration.

Correct AnswerverifiedShow Answer

When fertilization occurs,the sperm recognizes the egg by

Correct AnswerverifiedShow Answer

The process of programmed cell death ("cell suicide")is known as __________.

Correct AnswerverifiedShow Answer

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