The genetic code works only because each codon is read in a specific manner that results in the correct amino acid being placed in that particular spot. What physically places each amino acid by matching up the correct codon?

A) tRNA
B) mRNA
C) DNA
D) rRNA


A

Biology & Microbiology

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Intervertebral discs are made of

a. fibrocartilage. b. bone. c. fat. d. tendon. e. muscle.

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Which of the following animals displays radial symmetry?

A) an earthworm B) a sea anemone C) a fish D) a lobster

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During ______, crossing-over sometimes occurs between nonsister chromatids of a tetrad.

a. cell division b. mitosis c. meiosis

Biology & Microbiology

The Gram-staining procedure is widely used because it allows rapid identification of a microorganism with little additional testing.

Answer the following statement true (T) or false (F)

Biology & Microbiology