BIO 1050 EXAM 2 ECU ACTUAL TEST
QUESTIONS AND CORRECT ANSWERS
◉ The importance of transcription and translation are that together
they.
Answer: a. replicate the DNA so that one copy is available for each
daughter cell during cell division.
b. make the phospholipid bilayers of cellular membranes.
c. break down stored energy into the usable form, ATP.
d. store energy from sunlight in the form of glucose and starches.
*e. make specific proteins from the information on the DNA.
◉ Bonds between sugars and phosphates are found.
Answer: a. within single water molecules.
*b. in the backbone of DNA.
c. in peptides.
d. in phospholipid bilayers.
e. in proteins.
◉ Both transcription and DNA replication require.
Answer: *a. a polymerase.
b. mRNA.
,c. tRNA.
d. ribosomes.
e. tRNA synthetase.
◉ Which would you be most likely to find in the nucleus?.
Answer: a. mitochondria.
b. ribosomes translating mRNA into proteins.
*c. DNA.
d. enzymes for adding sugars to proteins.
e. enzymes for glycolysis.
◉ Which protein would you expect to find being synthesized on free
ribosomes, not in the rough endoplasmic reticulum (RER)?.
Answer: a. insulin
*b. a protein that makes a muscle cell contract and is found in the
cytosol
c. glucagon
d. a glucose channel destined for the plasma membrane
e. glucose
◉ Which organelle is where some proteins are first processed as
they are translated?.
, Answer: a. the nucleus
*b. rough endoplasmic reticulum (RER)
c. the Golgi apparatus
d. mitochondria
e. smooth endoplasmic reticulum (SER)
◉ What is a consequence of mutations in DNA?.
Answer: a. the individual with a mutation will have cancer.
b. the individual with a mutation will die.
c. the cell with a mutation will die.
*d. proteins and phenotypes may be different.
e. there are no consequences because proteins, not DNA matter.
◉ The enzyme family tRNA synthetase.
Answer: a. makes tRNA from the sequence of nucleotides in DNA at
the tRNA gene.
*b. adds the correct amino acid to each tRNA.
c. makes the ribosomes that tRNA binds do during translation.
d. binds to the A site of ribosomes.
e. reads the codons on the tRNA by complementary base pairing.
QUESTIONS AND CORRECT ANSWERS
◉ The importance of transcription and translation are that together
they.
Answer: a. replicate the DNA so that one copy is available for each
daughter cell during cell division.
b. make the phospholipid bilayers of cellular membranes.
c. break down stored energy into the usable form, ATP.
d. store energy from sunlight in the form of glucose and starches.
*e. make specific proteins from the information on the DNA.
◉ Bonds between sugars and phosphates are found.
Answer: a. within single water molecules.
*b. in the backbone of DNA.
c. in peptides.
d. in phospholipid bilayers.
e. in proteins.
◉ Both transcription and DNA replication require.
Answer: *a. a polymerase.
b. mRNA.
,c. tRNA.
d. ribosomes.
e. tRNA synthetase.
◉ Which would you be most likely to find in the nucleus?.
Answer: a. mitochondria.
b. ribosomes translating mRNA into proteins.
*c. DNA.
d. enzymes for adding sugars to proteins.
e. enzymes for glycolysis.
◉ Which protein would you expect to find being synthesized on free
ribosomes, not in the rough endoplasmic reticulum (RER)?.
Answer: a. insulin
*b. a protein that makes a muscle cell contract and is found in the
cytosol
c. glucagon
d. a glucose channel destined for the plasma membrane
e. glucose
◉ Which organelle is where some proteins are first processed as
they are translated?.
, Answer: a. the nucleus
*b. rough endoplasmic reticulum (RER)
c. the Golgi apparatus
d. mitochondria
e. smooth endoplasmic reticulum (SER)
◉ What is a consequence of mutations in DNA?.
Answer: a. the individual with a mutation will have cancer.
b. the individual with a mutation will die.
c. the cell with a mutation will die.
*d. proteins and phenotypes may be different.
e. there are no consequences because proteins, not DNA matter.
◉ The enzyme family tRNA synthetase.
Answer: a. makes tRNA from the sequence of nucleotides in DNA at
the tRNA gene.
*b. adds the correct amino acid to each tRNA.
c. makes the ribosomes that tRNA binds do during translation.
d. binds to the A site of ribosomes.
e. reads the codons on the tRNA by complementary base pairing.
