Chapter 8 Prt 1 Microbial Genetics Question Preview (ID: 43938)
Microbial Genetics.
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What are genetics?
a) the study of heredity
b) The study of jeans
c) The study of genes
d) a segment of DNA
What is a gene?
a) the study of heredity
b) transcription
c) translation
d) A segment of DNA that codes for a functional product, (usually a protein)
DNA is ? into mRNA and mRNA is ? into protein.
a) translated, transcribed
b) transcribed, translated
c) converted, translated
d) transcribed, converted
What is DNA?
a) deoxyribonucleic acid
b) ribonucleic acid
c) semiconservative replication
d) none of these
DNA is made of what?
a) nucleotides
b) phosphates
c) sugars
d) proteins
What does a nucleotide consist of?
a) one deoxyribose
b) one phosphate
c) one nitrogenous base
d) All of these
What are the nitrogenous bases of DNA?
a) adenine and thymine
b) guanine and cytosine
c) none of these
d) two answers
Adenine and guanine are?
a) purines
b) pyrimidines
c) codons
d) none of these
Uracil, thymine and cytosine are what?
a) purines
b) none of these are correct
c) codons
d) pyrimidines
What are the nitrogenous bases of RNA?
a) Uracil
b) adenine
c) Guanine and cytosine
d) All of these
What is semiconservative replication?
a) process by which DNA is copied
b) its the nitrogenous bases of rna
c) none of these
d) all of these
What s the function of messenger RNA (mRNA)?
a) partailly makes up the ribosome
b) noe of these
c) carries the genetic message from the DNA to ribosome ( a linear molecule, single stranded)
d) carries amino acids to the ribosome for protein synthesis.
What does mRNA contain?
a) codons; a sequence of three nitrogenous bases or nucleotides
b) makes up the ribosome
c) none of these
d) all of these
What is the function of ribosomal RNA (rRNA)?
a) partially makes up the ribosome
b) carries the genetic message from DNA to ribosome
c) it contains codons
d) none of these
What is the function of transfer RNA (tRNA)?
a) none of these
b) carries codons
c) carries amino acids to ribosome for protein synthesis
d) looks like a 4 leaf clover
What does each tRNA contain?
a) an anticodon; sequence of three nitrogenous bases that aligns with the codons on mRNA.
b) a codon
c) a clover
d) none of these
What is a mutation?
a) An empty place
b) a lost DNA strand
c) a change in the base sequence of DNA
d) none of these
What are the two types of mutations?
a) point mutation(base substitution) and frameshift mutation
b) spontaneous and Ames test
c) transcription and translation
d) none of these
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