Which one of the following is not found at the site of protein synthesis?
A) DNA
B) mRNA
C) rRNA
D) tRNA
A) DNA
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The F2 phenotypic ratio of a monohybrid cross is
a. 1:1. b. 2:1. c. 9:3:3:1. d. 1:2:1. e. 3:1.
Three fossils are found in undisturbed layers of rock, or strata. Fossil A is closest to the Earth's surface and Fossil C was deeper than Fossil B. Given this limited data, what assumptions can you make about these fossils?
What will be an ideal response?
The part of the brain that integrates sensory input from the eyes, ears, muscles, and joins with motor information from the cerebral cortex is the
A. brain stem. B. cerebrum. C. diencephalon. D. cerebellum.
What caterpillar saliva-based chemical stimulates a corn plant to release an alarm signal?
A) Methyl salicylate B) Salicylic acid C) Florigen D) Volicitin E) Salicin