Question 1

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 2

If an mRNA codon reads UAC,its complementary anticodon will be:

Accepted Answer

A)   AUG
B)   CAG
C)   ATG
D)   TUC

Question 3

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 4

Explain why mRNA must be processed before it leaves the nucleus.

Accepted Answer

DNA contains introns,or sequences of ext...

Question 5

A(n) ____________ is a piece of DNA with a group of genes that are transcribed together as a unit.

Accepted Answer

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

Question 6

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 7

The three nucleotide sequence on mRNA is called an anticodon.

Accepted Answer

A) True 
 B)False

Question 8

In eukaryotes,transcription takes place in the _________ and translation takes place in the ________.

Accepted Answer

A)   cytoplasm,nucleus
B)   nucleus,cytoplasm
C)   cytoplasm,cytoplasm
D)   nucleoid,cytoplasm
E)   nucleus,nucleus

Question 9

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

Accepted Answer

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

Question 10

To turn genes off,a regulatory protein called a(n) __________ is bound to a regulatory site so that RNA polymerase is blocked.

Accepted Answer

A)   repressor
B)   translator
C)   signal molecule
D)   operon

Question 11

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

Question 12

Which of the following cannot be a product of transcription?

Accepted Answer

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

Question 13

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 14

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

Accepted Answer

A) True 
 B)False

Question 15

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

Exam 12: How Genes Work

If an mRNA codon reads UAC,its complementary anticodon will be:

Correct Answer
verified

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

Correct Answer
verified

In eukaryotes,transcription takes place in the _ and translation takes place in the .

Correct Answer
verified

To turn genes off,a regulatory protein called a(n) __________ is bound to a regulatory site so that RNA polymerase is blocked.

Correct Answer
verified

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

Correct Answer
verified

A(n) ____________ is a piece of DNA with a group of genes that are transcribed together as a unit.

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

Which of the following cannot be a product of transcription?

Correct Answer
verified

Explain why mRNA must be processed before it leaves the nucleus.

Correct Answer
verified
DNA contains introns,or sequences of ext...
View Answer

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

Correct Answer
verified

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

Correct Answer
verified

The three nucleotide sequence on mRNA is called an anticodon.

Correct Answer
verified

Which of the following is correct about the genetic code?

Correct Answer
verified

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

Correct Answer
verified

Exam 12: How Genes Work

If an mRNA codon reads UAC,its complementary anticodon will be:

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

In eukaryotes,transcription takes place in the _________ and translation takes place in the ________.

Correct AnswerverifiedShow Answer

To turn genes off,a regulatory protein called a(n) __________ is bound to a regulatory site so that RNA polymerase is blocked.

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

A(n) ____________ is a piece of DNA with a group of genes that are transcribed together as a unit.

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

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

Correct AnswerverifiedShow Answer

Which of the following cannot be a product of transcription?

Correct AnswerverifiedShow Answer

Explain why mRNA must be processed before it leaves the nucleus.

Correct AnswerverifiedDNA contains introns,or sequences of ext...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The three nucleotide sequence on mRNA is called an anticodon.

Correct AnswerverifiedShow Answer

Which of the following is correct about the genetic code?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

In eukaryotes,transcription takes place in the _ and translation takes place in the .

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
DNA contains introns,or sequences of ext...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified