Reverse transcriptase is associated with which of the following?

A) dsDNA viruses
B) +ssRNA viruses
C) -ssRNA viruses
D) retroviruses
E) dsRNA viruses


D

Biology & Microbiology

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What must happen to amino acids before they can be used in catabolic reactions?  

A.  They must be decarboxylated B.  They must be deoxygenated C.  They must be dehydrogenated D.  They must be deaminated

Biology & Microbiology

Ferns, whisk ferns, and horsetails are members of the ____ phylum, which has about 13,000 described living species

a. Hepatophyta b. Monilophyta c. Bryophyta d. Lycophyta e. Anthocerophyta

Biology & Microbiology

Which of the following types of mutation, resulting in an error in the mRNA just after the AUG start of translation, is likely to have the most serious effect on the polypeptide product?

A) a deletion of a codon B) a deletion of two nucleotides C) a substitution of the third nucleotide in an ACC codon D) a substitution of the first nucleotide of a GGG codon

Biology & Microbiology

Mycorrhizae help plants obtain water from the soil

Indicate whether the statement is true or false

Biology & Microbiology