To which of the following classes of sugars does glucose belong?
A) pentose
B) hexose
C) tetrose
D) heptose
E) triose
B) hexose
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The primary source of energy for most organisms is ultimately derived from
A. glucose. B. glycogen. C. plants. D. the sun. E. catabolism.
In an experiment examining adrenergic receptors, epinephrine alone was not able to trigger an increase in cAMP, but
when beta receptors were fused with animal cells, there were high levels of cAMP. This indicates ____ was occurring.
a. activation of epinephrine b. protein kinase inhibition c. activation of adenylyl cyclase only d. protein kinase amplification only e. both activation of adenylyl cyclase and protein kinase amplification
In a monohybrid cross with complete dominance, the F2 offspring should contain ____
a. two different phenotypes and two different genotypes b. two different phenotypes and three different genotypes c. three different phenotypes and two different genotypes d. three different phenotypes and three different genotypes e. two different phenotypes and one genotype
Codons are three-base sequences that specify the addition of a single amino acid. How do eukaryotic codons and prokaryotic codons compare?
A) Prokaryotic codons usually contain different bases than those of eukaryotes. B) Prokaryotic codons usually specify different amino acids than those of eukaryotes. C) The translation of codons is mediated by tRNAs in eukaryotes, but translation requires no intermediate molecules such as tRNAs in prokaryotes. D) Codons are a nearly universal language among all organisms.