Microbiology Chapter 8 (Test Bank)
Exam Questions and Answers
Among the microorganisms, various genomes can include
A. chromosomes.
B. plasmids.
C. mitochondrial DNA.
D. chloroplast DNA.
E. All of the choices are correct. - Answer-E
Eukaryotic chromosomes differ from bacterial chromosomes because only eukaryotes
have
A. histone proteins.
B. chromosomes in a nucleus.
C. several to many chromosomes.
D. elongated, not circular, chromosomes.
E. All of the choices are correct. - Answer-E
Which of the following is not true of an organism's genotype?
A. is inherited
B. are structural genes coding for proteins
C. are genes coding for RNA
D. are regulatory genes controlling gene expression
E. are the expressed traits governed by the genes - Answer-E
The _____ is all of the genetic material of a cell.
A. chromosome
B. plasmid
C. prophage
D. genome
E. proteome - Answer-D
Each _____ is a specific segment of the DNA with the code for production of one
functional product.
A. intron
B. exon
C. gene
D. operator
E. triplet - Answer-C
, The DNA of microorganisms is made up of subunits called
A. histones.
B. amino acids.
C. nucleotides.
D. mRNA.
E. polymerases. - Answer-C
The antiparallel arrangement within DNA molecules refers to
A. each base bonding at the 1' position of the sugar.
B. a purine always bonding to a pyrimidine.
C. one helix strand that runs from the 5' to 3' direction and the other strand runs from
the 3' to 5' direction.
D. an original parent DNA strand and one newly synthesized DNA strand comprising a
new DNA molecule.
E. None of the choices is correct. - Answer-C
Each nucleotide is composed of
A. one phosphate, one nitrogenous base, and one sugar.
B. one phosphate, one nitrogenous base, and two sugars.
C. two phosphates, one nitrogenous base, and one sugar.
D. two phosphates, one nitrogenous base, and two sugars.
E. one phosphate, two nitrogenous bases, and one sugar. - Answer-A
Base pairs in DNA are held together by _____ bonds.
A. peptide
B. nonpolar covalent
C. polar covalent
D. hydrogen
E. sulfhydryl - Answer-D
The duplication of a cell's DNA is called
A. mitosis.
B. replication.
C. transcription.
Exam Questions and Answers
Among the microorganisms, various genomes can include
A. chromosomes.
B. plasmids.
C. mitochondrial DNA.
D. chloroplast DNA.
E. All of the choices are correct. - Answer-E
Eukaryotic chromosomes differ from bacterial chromosomes because only eukaryotes
have
A. histone proteins.
B. chromosomes in a nucleus.
C. several to many chromosomes.
D. elongated, not circular, chromosomes.
E. All of the choices are correct. - Answer-E
Which of the following is not true of an organism's genotype?
A. is inherited
B. are structural genes coding for proteins
C. are genes coding for RNA
D. are regulatory genes controlling gene expression
E. are the expressed traits governed by the genes - Answer-E
The _____ is all of the genetic material of a cell.
A. chromosome
B. plasmid
C. prophage
D. genome
E. proteome - Answer-D
Each _____ is a specific segment of the DNA with the code for production of one
functional product.
A. intron
B. exon
C. gene
D. operator
E. triplet - Answer-C
, The DNA of microorganisms is made up of subunits called
A. histones.
B. amino acids.
C. nucleotides.
D. mRNA.
E. polymerases. - Answer-C
The antiparallel arrangement within DNA molecules refers to
A. each base bonding at the 1' position of the sugar.
B. a purine always bonding to a pyrimidine.
C. one helix strand that runs from the 5' to 3' direction and the other strand runs from
the 3' to 5' direction.
D. an original parent DNA strand and one newly synthesized DNA strand comprising a
new DNA molecule.
E. None of the choices is correct. - Answer-C
Each nucleotide is composed of
A. one phosphate, one nitrogenous base, and one sugar.
B. one phosphate, one nitrogenous base, and two sugars.
C. two phosphates, one nitrogenous base, and one sugar.
D. two phosphates, one nitrogenous base, and two sugars.
E. one phosphate, two nitrogenous bases, and one sugar. - Answer-A
Base pairs in DNA are held together by _____ bonds.
A. peptide
B. nonpolar covalent
C. polar covalent
D. hydrogen
E. sulfhydryl - Answer-D
The duplication of a cell's DNA is called
A. mitosis.
B. replication.
C. transcription.
