Which of the following is NOT a characteristic of a virus?
A. Containing nucleic acid
B. Surrounded by capsid proteins
C. Containing ribosomes for translation
D. Nonliving
Ans: C. Containing ribosomes for translation
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In chordates, which mesoderm structure forms during gastrulation and provides structural rigidity along the dorsal anterioposterior axis of the embryo?
A. Archenteron B. Neural tube C. Notochord D. Epidermis E. Intestinal tract
If the wild type DNA sequence reads THE CAT ATE THE BIG RAT, what type of mutation would change the sequence to THE CAT ATA ETH EBI GRA T?
A. Missense B. Deletion C. Insertion D. Nonsense E. Silent
Typically, when one wishes to represent a gene, the symbol used is ________
A) in all upper case letters B) in bold print C) in italics D) in all lowercase letters E) underlined
Which of the following does not describe a situation of asexual reproduction?
(a) A bacterium multiplying by simple cell division. (b) Using a part of a plant to create a new independent plant. (c) Using in vitro fertilization to combine a sperm and an egg to create an embryo. (d) The parthenogenetic development of eggs produced by some species of lizards.