Choose the best matching element.
A. Single base-pair mutation
B. Translation
C. Promoters
D. Messenger RNA
E. transcription
F. Polysome
G. RNA polymerase
H. Anticodon
I. Codon
A. Results in a hairless appearance of the sphynx cat
B. RNA-directed process involving polypeptide chains
C. Sites at which RNA polymerases can bind and initiate transcription
D. Is bound by a small subunit of a ribosome to begin translation
E. Guided and catalyzed by RNA polymerases
F. Polypeptide chain elongation proceeds independently at each body in this cluster
G. Adds nucleotides to the end of a growing RNA
H. A tRNA triplet opposite a codon
I. A set of three nucleotides
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Which of the following correctly describes the path of fluid as it is filtered from the blood and flows through the nephron?
A. Bowman's capsule ? proximal convoluted tubule ? loop of Henle ? distal convoluted tubule ? collecting duct B. collecting duct ? Bowman's capsule ? proximal convoluted tubule ? loop of Henle ? distal convoluted tubule C. Bowman's capsule ? loop of Henle ? proximal convoluted tubule ? distal convoluted tubule ? collecting duct D. Bowman's capsule? distal convoluted tubule ? loop of Henle ? proximal convoluted tubule ? collecting duct E. collecting duct ? distal convoluted tubule ? loop of Henle ? proximal convoluted tubule ? Bowman's capsule
Fluorescent in situ hybridization (FISH) would be helpful in determining
A) the location of B-DNA and Z-DNA. B) the position and structure of nucleosomes. C) the position of particular chromosomes or sequences inside the nucleus. D) the base composition of a DNA sample. E) the number of nuclear pores on the nuclear envelope
Arrival of an action potential at a presynaptic cell's axon terminals triggers the release of __________, a type of chemical signal.
Fill in the blank(s) with the appropriate word(s).
Which of the following drugs inhibits nucleic acid synthesis specifically in most bacteria?
A) fluoroquinolones B) actinomycin C) rifampin D) tetracycline E) 5-fluorocytosine