C HAPTER 4: M OLECULAR I NFORMATION
F LOW AND P ROTEIN P ROCESSING
Test Bank for Brock Biology of Microorganism 16th Edition by Michael T.
Madigan
4.1 Multiple Choice Questions
1. The functional unit of genetic information is the
A) nucleotide.
B) gene.
C) chromosome.
D) protein.
2. Which of the following statements is TRUE concerning mRNA?
A) mRNA has a very short half -life.
B) mRNA has complex secondary structure.
C) mRNA is catal ytic.
D) mRNA is the product of translation.
3. AT-rich DNA will denature/melt
A) at a higher temperature t han GC-rich DNA.
B) at a lower temperature than GC -rich DNA.
C) usuall y at the same temperature as GC -rich DNA, with some minor
variations.
D) in accordance with the animal or plant from which it was taken.
4. Supercoiling is important for DNA structure, because
A) it holds together the antiparallel strands of DNA in the double helix.
, B) it provides energy for transcription.
C) it condenses the DNA so that it can fit inside the cell.
D) it prevents RNA from pairing with DNA in the double helix.
5. Many pharmaceutical drugs specificall y inhibit transcription in Bacteria
but not Archaea or Eukarya. Why would drugs that inhibit transcription
onl y affect Bacteria and not Archaea even though they are both
prokaryotes?
A) Archaea and Eukarya have very similar ribosomes that are dif ferent
than bacterial ribosomes.
B) Bacteria lack a nucleus.
C) Archaea lack operons.
D) Archaea and Eukarya have very similar RNA pol ymerases that are
different than bacterial RNA pol ymerases.
6. Which of the following is an example of one codon?
A) CATT
B) GCCATT
C) CAG
D) CCGUAA
7. DNA participates in protein synthesis through
A) cyclic messengers.
B) direct pairing with amino acids.
C) an RNA intermediate.
D) protein folding.
8. The two strands of the DNA double helix are held together by
A) 5ʹ to 3ʹ attraction.
B) hydrogen bonds b etween nucleotide bases.
C) codons.
D) peptide bonds between nucleotide bases.
F LOW AND P ROTEIN P ROCESSING
Test Bank for Brock Biology of Microorganism 16th Edition by Michael T.
Madigan
4.1 Multiple Choice Questions
1. The functional unit of genetic information is the
A) nucleotide.
B) gene.
C) chromosome.
D) protein.
2. Which of the following statements is TRUE concerning mRNA?
A) mRNA has a very short half -life.
B) mRNA has complex secondary structure.
C) mRNA is catal ytic.
D) mRNA is the product of translation.
3. AT-rich DNA will denature/melt
A) at a higher temperature t han GC-rich DNA.
B) at a lower temperature than GC -rich DNA.
C) usuall y at the same temperature as GC -rich DNA, with some minor
variations.
D) in accordance with the animal or plant from which it was taken.
4. Supercoiling is important for DNA structure, because
A) it holds together the antiparallel strands of DNA in the double helix.
, B) it provides energy for transcription.
C) it condenses the DNA so that it can fit inside the cell.
D) it prevents RNA from pairing with DNA in the double helix.
5. Many pharmaceutical drugs specificall y inhibit transcription in Bacteria
but not Archaea or Eukarya. Why would drugs that inhibit transcription
onl y affect Bacteria and not Archaea even though they are both
prokaryotes?
A) Archaea and Eukarya have very similar ribosomes that are dif ferent
than bacterial ribosomes.
B) Bacteria lack a nucleus.
C) Archaea lack operons.
D) Archaea and Eukarya have very similar RNA pol ymerases that are
different than bacterial RNA pol ymerases.
6. Which of the following is an example of one codon?
A) CATT
B) GCCATT
C) CAG
D) CCGUAA
7. DNA participates in protein synthesis through
A) cyclic messengers.
B) direct pairing with amino acids.
C) an RNA intermediate.
D) protein folding.
8. The two strands of the DNA double helix are held together by
A) 5ʹ to 3ʹ attraction.
B) hydrogen bonds b etween nucleotide bases.
C) codons.
D) peptide bonds between nucleotide bases.
