Question 1

The process of bringing in the appropriate amino acid into position along the mRNA in the cytoplasm is:

Accepted Answer

A)  translation
B)  transcription
C)  transduction
D)  promotion

Question 2

Describe the differences between DNA and RNA.

Accepted Answer

DNA is a double-stranded nucleic acid,wi...

Question 3

Small interfering RNAs can alter gene expression by targeting mRNA for destruction or by blocking translation of a mRNA.

Accepted Answer

A) True 
 B)False

Question 4

The three types of RNA involved in protein synthesis are mRNA,_______________,and ________________.

Accepted Answer

tRNA (transfer RNA and rRNA (ribosomal RNA

Question 5

When mRNA leaves the cell's nucleus,it next becomes associated with:

Accepted Answer

A)  tRNA
B)  endoplasmic reticulum
C)  a ribosome
D)  proteins

Question 6

The bases of RNA are the same as those of DNA with the exception that RNA contains:

Accepted Answer

A)  cysteine instead of cytosine
B)  uracil instead of thymine
C)  cytosine instead of guanine
D)  uracil instead of adenine B

Question 7

In humans,what percent of the genome is devoted to the exons that encode proteins?

Accepted Answer

A)  about 1.5%
B)  about 20%
C)  about 35%
D)  about 50%
E)  about 75%

Question 8

Which site on the ribosome does the new tRNA bring an amino acid to?

Accepted Answer

A)  A
B)  P
C)  E
D)  C

Question 9

For a gene to be transcribed,the RNA polymerase has to bind to a(n) _____ sequence of nucleotides on the DNA.

Accepted Answer

A)  repressor
B)  operon
C)  promotor
D)  initiator
E)  elongation C

Question 10

Which of the following cannot be a product of transcription?

Accepted Answer

A)  mRNA
B)  Protein
C)  rRNA
D)  tRNA

Question 11

The genetic code is a ____________ code.

Accepted Answer

The answer of The genetic code is a ____________ code....

Question 12

How many different codons are possible with the four different nucleotides?

Accepted Answer

A)  12
B)  24
C)  55
D)  64
E)  128

Question 13

A type of DNA sequence that expands access to a gene to promote its expression is a(n)_______________.

Accepted Answer

The answer of A type of DNA sequence that expands...

Question 14

The nucleotide sequences on DNA that actually have information encoding a sequence of amino acids are:

Accepted Answer

A)  introns
B)  exons
C)  proteins
D)  enhancers

Question 15

The site where RNA polymerase attaches to the DNA molecule to start the formation of mRNA is called a(n) :

Accepted Answer

A)  operon
B)  exon
C)  promoter
D)  operator

Question 16

Which of the following is correct about the genetic code?

Accepted Answer

A)  All prokaryotes use one code and all eukaryotes use another.
B)  All living things use the same genetic code.
C)  Protists use a different code than other kingdoms.
D)  Fungi and animals use the same code,but plants use another.
E)  Archaea and bacteria use one code and eukarya use another.

Question 17

The use of DNA information to direct the production of particular proteins is called:

Accepted Answer

A)  transcription
B)  translation
C)  gene expression
D)  replication
E)  polymerization

Question 18

The genetic code is universal,the same in practically all organisms.

Accepted Answer

A) True 
 B)False

Question 19

The RNA copy of DNA that leaves the nucleus and travels to the cytoplasm to make proteins is:

Accepted Answer

A)  ribosomal RNA
B)  tRNA
C)  mRNA
D)  RNA polymerase

Question 20

Due to _________,the 25,000 genes of the human genome seem to encode as many as 120,000 different expressed mRNAs.

Accepted Answer

A)  mutations
B)  independent assortment
C)  alternative splicing
D)  recombination

Exam 12: How Genes Work

The process of bringing in the appropriate amino acid into position along the mRNA in the cytoplasm is:

Correct AnswerverifiedShow Answer

Describe the differences between DNA and RNA.

Correct AnswerverifiedDNA is a double-stranded nucleic acid,wi...View AnswerShow Answer

Small interfering RNAs can alter gene expression by targeting mRNA for destruction or by blocking translation of a mRNA.

Correct AnswerverifiedShow Answer

The three types of RNA involved in protein synthesis are mRNA,_______________,and ________________.

Correct AnswerverifiedtRNA (transfer RNA and rRNA (ribosomal RNA

When mRNA leaves the cell's nucleus,it next becomes associated with:

Correct AnswerverifiedShow Answer

The bases of RNA are the same as those of DNA with the exception that RNA contains:

Correct AnswerverifiedB

In humans,what percent of the genome is devoted to the exons that encode proteins?

Correct AnswerverifiedShow Answer

Which site on the ribosome does the new tRNA bring an amino acid to?

Correct AnswerverifiedShow Answer

For a gene to be transcribed,the RNA polymerase has to bind to a(n) _____ sequence of nucleotides on the DNA.

Correct AnswerverifiedC

Which of the following cannot be a product of transcription?

Correct AnswerverifiedShow Answer

The genetic code is a ____________ code.

Correct AnswerverifiedShow Answer

How many different codons are possible with the four different nucleotides?

Correct AnswerverifiedShow Answer

A type of DNA sequence that expands access to a gene to promote its expression is a(n)_______________.

Correct AnswerverifiedShow Answer

The nucleotide sequences on DNA that actually have information encoding a sequence of amino acids are:

Correct AnswerverifiedShow Answer

The site where RNA polymerase attaches to the DNA molecule to start the formation of mRNA is called a(n) :

Correct AnswerverifiedShow Answer

Which of the following is correct about the genetic code?

Correct AnswerverifiedShow Answer

The use of DNA information to direct the production of particular proteins is called:

Correct AnswerverifiedShow Answer

The genetic code is universal,the same in practically all organisms.

Correct AnswerverifiedShow Answer

The RNA copy of DNA that leaves the nucleus and travels to the cytoplasm to make proteins is:

Correct AnswerverifiedShow Answer

Due to _________,the 25,000 genes of the human genome seem to encode as many as 120,000 different expressed mRNAs.

Correct AnswerverifiedShow Answer

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DNA is a double-stranded nucleic acid,wi...
View Answer

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The three types of RNA involved in protein synthesis are mRNA,_,and __.

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tRNA (transfer RNA and rRNA (ribosomal RNA

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B

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C

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