Question 1

Which of the following descriptions of a polymer is FALSE?

Accepted Answer

A)  Glycogen is a polymer of glucose.
B)  A protein is a polymer of amino acids.
C)  DNA is a polymer of nucleotides.
D)  ATP is a polymer of phosphates.
E)  Starch is a polymer of glucose.F) C) and E)
G) A) and D)

Question 2

What is the outcome of having only the head of the sperm entering the oocyte?

Accepted Answer

A)  Paternal lineage is more easily traced.
B)  Mitochondrial DNA is only of maternal inheritance.
C)  Genetic abnormalities are reduced by one- half.
D)  Flagella is free to move the fertilized egg to the uterus.
E)  Genealogy lines become less conclusive.F) D) and E)
G) A) and B)

Question 3

What two types of molecules make up ribosomes?

Accepted Answer

A)  proteins and phospholipids
B)  phospholipids and RNA
C)  mRNA and tRNA
D)  rRNA and proteins
E)  rRNA and tRNAF) A) and C)
G) C) and D)

Question 4

Which of the following statements about the genetic code is FALSE?

Accepted Answer

A)  mRNA is read 3 bases at a time and these units are called codons.
B)  There are 3 termination codons that do not code for amino acids.
C)  There is one initiator codon and it codes for an amino acid.
D)  Each codon is specific for only one amino acid.
E)  Each amino acid is coded for by only one codon.F) A) and C)
G) B) and E)

Question 5

What junctions allow the passage of small molecules and ions from the cytosol of one cell to that of a neighboring cell?

Accepted Answer

A)  tight junctions
B)  desmosomes
C)  hemidesmosomes
D)  basal lamina
E)  gap junctionsF) A) and B)
G) C) and E)

Question 6

Endocytotic vesicles fuse with what organelle?

Accepted Answer

A)  smooth endoplasmic reticulum
B)  lysosomes
C)  mitochondria
D)  Golgi apparatus
E)  peroxisomesF) A) and B)
G) B) and C)

Question 7

The promoter sequence of the gene is recognized by , which initiates transcription.

Accepted Answer

A)  helicase
B)  gyrase
C)  RNA polymerase
D)  DNA polymerase
E)  ligaseF) A) and B)
G) C) and D)

Question 8

In eukaryotes, which of the following properties is TRUE for both DNA and RNA?

Accepted Answer

A)  follow the law of complementary base pairing
B)  propagation through semi- conservative replication
C)  involved in translation
D)  contain the bases uracil and thymine
E)  double- strandedF) B) and D)
G) A) and B)

Question 9

During what phase of the cell cycle does rapid protein synthesis occur as the cell grows to double its size?

Accepted Answer

A)  G0
B)  G1
C)  G2
D)  S
E)  mitosisF) A) and B)
G) None of the above

Question 10

The enzyme catalase is located where?

Accepted Answer

A)  smooth endoplasmic reticulum
B)  lysosomes
C)  mitochondria
D)  Golgi apparatus
E)  peroxisomesF) A) and B)
G) A) and C)

Question 11

What modifications made to mRNA function to prevent its degradation in the cytoplasm by exonucleases?

Accepted Answer

A)  promoter regions
B)  CAP and poly A tail
C)  exons
D)  protein coat
E)  intronsF) All of the above
G) B) and C)

Question 12

Which of the following is an example of a pentose sugar?

Accepted Answer

A)  deoxyribose
B)  lactose
C)  fructose
D)  glucose
E)  sucroseF) C) and D)
G) B) and E)

Question 13

Movement between cells in an epithelium is called transepithelial transport.

Accepted Answer

A) True 
 B)False

Question 14

The is the site where lipids, triglycerides, and steroids are synthesized, as well as where calcium is stored within the cell.

Accepted Answer

A)  lysosome
B)  mitochondria
C)  nucleolus
D)  rough endoplasmic reticulum
E)  smooth endoplasmic reticulumF) B) and D)
G) A) and D)

Question 15

What is the portion of DNA that codes for a particular protein?

Accepted Answer

A)  triplet
B)  codon
C)  promoter sequence
D)  nucleotide
E)  geneF) A) and B)
G) C) and D)

Question 16

Which of the following is NOT an integral membrane protein?

Accepted Answer

A)  carrier proteins for mediated transport
B)  channels for ion diffusion across membranes
C)  occludins
D)  connexons
E)  actinF) B) and E)
G) C) and E)

Question 17

During what phase of the cell cycle is the cell carrying out its normal activity and NOT involved directly in cell division?

Accepted Answer

A)  G0
B)  G1
C)  G2
D)  S
E)  mitosisF) C) and D)
G) A) and C)

Question 18

What causes DNA to uncoil during transcription?

Accepted Answer

A)  binding of tRNA to the initiator codon
B)  binding of ubiquitin to the DNA
C)  binding of RNA polymerase to the promoter sequence
D)  binding of helicase to the DNA
E)  binding of DNA polymerase to the leader sequenceF) B) and C)
G) A) and B)

Question 19

are proteins attached to intermediate filaments in regions where cells are exposed to mechanical stresses.

Accepted Answer

A)  Connexins
B)  Cadherins
C)  Occludins
D)  Tubulins
E)  DyneinsF) B) and E)
G) A) and B)

Question 20

Which of the following filaments is found in cilia and flagella?

Accepted Answer

A)  microfilaments only
B)  intermediate filaments only
C)  microtubules only
D)  microfilaments and microtubules
E)  microfilaments and intermediate filamentsF) None of the above
G) C) and E)

Exam 2: The Cell: Structure and Function

Which of the following is an example of a pentose sugar?

Correct AnswerverifiedShow Answer

are proteins attached to intermediate filaments in regions where cells are exposed to mechanical stresses.

Correct AnswerverifiedShow Answer

Which of the following is NOT an integral membrane protein?

Correct AnswerverifiedShow Answer

What modifications made to mRNA function to prevent its degradation in the cytoplasm by exonucleases?

Correct AnswerverifiedShow Answer

Which of the following statements about the genetic code is FALSE?

Correct AnswerverifiedShow Answer

What two types of molecules make up ribosomes?

Correct AnswerverifiedShow Answer

Endocytotic vesicles fuse with what organelle?

Correct AnswerverifiedShow Answer

What is the outcome of having only the head of the sperm entering the oocyte?

Correct AnswerverifiedShow Answer

During what phase of the cell cycle does rapid protein synthesis occur as the cell grows to double its size?

Correct AnswerverifiedShow Answer

Which of the following filaments is found in cilia and flagella?

Correct AnswerverifiedShow Answer

During what phase of the cell cycle is the cell carrying out its normal activity and NOT involved directly in cell division?

Correct AnswerverifiedShow Answer

The enzyme catalase is located where?

Correct AnswerverifiedShow Answer

In eukaryotes, which of the following properties is TRUE for both DNA and RNA?

Correct AnswerverifiedShow Answer

What causes DNA to uncoil during transcription?

Correct AnswerverifiedShow Answer

Movement between cells in an epithelium is called transepithelial transport.

Correct AnswerverifiedShow Answer

Which of the following descriptions of a polymer is FALSE?

Correct AnswerverifiedShow Answer

The promoter sequence of the gene is recognized by , which initiates transcription.

Correct AnswerverifiedShow Answer

What is the portion of DNA that codes for a particular protein?

Correct AnswerverifiedShow Answer

What junctions allow the passage of small molecules and ions from the cytosol of one cell to that of a neighboring cell?

Correct AnswerverifiedShow Answer

The is the site where lipids, triglycerides, and steroids are synthesized, as well as where calcium is stored within the cell.

Correct AnswerverifiedShow Answer

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