Which structures will delver the amino acids to the ribosomes?
a. Endoplasmic reticulum
b. rRNA
c. tRNA
d. Golgi body
e. mRNA
c
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Some archaea are extreme halophiles. This means that they thrive in ___ conditions
a. high temperature b. low temperature c. high sulfur d. high salt e. high oxygen
Independent assortment predicts a 9:3:3:1 ratio with four different phenotypes in the F2 progeny. If the alleles are epistatic, what would you predict?
A) more than four phenotypes B) fewer than four phenotypes C) heterozygotes with a novel phenotype between the dominant and recessive homozygotes D) 1/3 of the progeny with the dominant phenotypes and 2/3 recessive E) no change in the 9:3:3:1 ratio
In a tide pool, invertebrate species richness was 15. A researcher experimentally removed one species and over time the species count decreased to eight. The species removed was likely a(n)
A) mutualist. B) herbivore. C) detritivore. D) keystone species. E) C or D
Which of the following is NOT a reservoir of infection?
A) a sick person B) a healthy person C) a sick animal D) a hospital E) None of the answers is correct; all of these can be reservoirs of infection.