The structure in the above figure demonstrates which of the following?
a. transcription and translation occur simultaneously on a single strand
b. ribosomes attached to a strand of DNA
c. a small ribosomal subunit
d. multiple ribosomes on a strand of mRNA
e. a single unattached ribosome
ANSWER: d
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Mating a purebred Labrador retriever to a purebred poodle to produce "Labradoodles" is an example of
A. true-breeding. B. hybridization. C. self-fertilizing. D. inbreeding. E. mixed breeding.
Which of the following is a product of the citric acid cycle?
a. ADP b. NADPH c. carbon dioxide d. water
The Antennapedia complex and the bithorax complex of genes all encode transcription factors that have a 180-bp DNA-binding domain. What is this domain called?
What will be an ideal response?
Which structure generally traps water because it does NOT have aquaporins?
a. the proximal convoluted tubule b. the ascending segment of the loop of Henle c. the distal convoluted tubule d. the Bowman's capsule