Which of the following is not true about archaeal ribosomes?
A. They have similar antibiotic sensitivities to those of bacteria.
B. They are 70S like bacterial ribosomes.
C. They may possess ribosome binding sites homologous to bacterial Shine-Dalgarno sequences.
D. All of these are true about archaeal ribosomes.
Answer: A
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_____, which include lobsters and crabs, have _____ legs and, in the ocean, fill many of the ecological roles filled by insects on land
A. Crustaceans; branched B. Chelicerates; branched C. Crustaceans; unbranched D. Chelicerates; unbranched E. none of these
Your father is heterozygous for the recessive disorder phenylketonuria (PKU). You know your mom
has two "good" alleles. What is the probability that you will have the disorder?
a. 0% but you will have a 50% chance of passing the "bad" allele on to your children b. 0% and you don't need to worry about passing the "bad" allele on to your children c. 25% for you and 25% for your children d. 50% for you and 50% for your children e. 50% for you and 25% that you'll pass the "bad" allele on to your children
Hydrolysis of sucrose, a disaccharide, results in
A. two nucleotides. B. two monomers. C. two glycerol units. D. the release of functional groups. E. three monosaccharides.
The nucleus of an atom is usually made up of:
a. neutrons, which have no electrical charge. b. protons, which a positive charge, and neutrons, which have no electrical charge. c. protons, neutrons, and proteins that hold them together. d. neutrinos, which have no electrical charge. e. protons, which have a positive electrical charge, and proteins, which hold them together