The teacher and class were especially saddened when the colonial hydrozoan died. They had watched it carefully, and the unfortunate creature never even got to produce offspring by budding
Yet, everyone was elated when one of the students noticed a small colonial hydrozoan growing in a part of the tank far from the location of the original colony. The teacher was apparently unaware that these hydrozoans exhibit _____. A) spontaneous generation
B) abiogenesis
C) alternation of generations
D) a medusa stage
D
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What region of a steroid is hydrophilic?
A) the methyl (-CH3) groups B) the terminal hydroxyl group C) the ring structures D) the long hydrocarbon chain
A competent Hemophilus strain is individually transformed by three genes (a, b, and c) at a rate of 0.002% each. However, cotransformation frequencies for each pair are as follows: a and b 0.38 % a and c 0.72% b and c 0
19% What is the correct conclusion from this data? A) Genes b and c are farthest apart. B) Gene order is c, b, a. C) Cotransformation of b and c is so frequent, they must be one gene. D) Gene a is closer to b than to c. E) Genes a and c are farthest apart.
What is unusual about the amino acid composition of histones? How is the function of histones related to the amino acid composition? Of which histones are nucleosomes composed?
What will be an ideal response?
A highly resistant bacterial structure having a low metabolic rate is a(n)
A. pathogen. B. mutation. C. endospore. D. toxin.