Viral genomes _________
(a) can be made of DNA.
(b) can be made of RNA.
(c) can be either double-stranded or single-stranded.
(d) All answers above are true.
(d)
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RNA differs from DNA in many ways, including
A. DNA contains deoxyribose and RNA contains ribose. B. DNA contains thymine and RNA contains uracil instead of thymine. C. All are correct. D. DNA is double stranded and RNA is single stranded. E. RNA can catalyze some chemical reactions and DNA cannot.
Discuss the relative roles of descriptive and hypothesis-driven science in genomics
What will be an ideal response?
In order for a muscle contraction to occur, cross-bridges must form between which one of the following structures within a muscle cell?
A) the plasma membrane and the sarcoplasmic reticulum B) troponin and tropomyosin C) calcium and tropomyosin D) acetylcholine and muscle cell receptors E) actin and myosin
From earliest to latest, the overall sequence of early development proceeds in which of the following sequences?
A) first cell division ? synthesis of embryo's DNA begins ? acrosomal reaction ? cortical reaction B) cortical reaction ? synthesis of embryo's DNA begins ? acrosomal reaction ? first cell division C) cortical reaction ? acrosomal reaction ? first cell division ? synthesis of embryo's DNA begins D) acrosomal reaction ? cortical reaction ? synthesis of embryo's DNA begins ? first cell division