When the peptide bond is created between amino acid 1 and amino acid 2:
A. the amino group of amino acid 1 is joined to the carboxyl group of amino acid 2.
B. the carboxyl group of amino acid 1 is joined to the amino group of amino acid 2.
C. the carboxyl group of amino acid 1 is joined to the carboxyl group of amino acid 2.
D. the amino group of amino acid 1 is joined to the amino group of amino acid 2.
Answer: B
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K+ channels in the heart do not have binding sites for ACh, yet parasympathetic release of ACh causes outward flux of K+ from heart cells. How does this occur?
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The maximum number of tRNAs that can be on one
ribosome at one time is a. 2. b. 3. c. 43 . d. unlimited. e. unknown.
How many molecules of ATP are needed to reduce one molecule of carbon dioxide to carbohydrate by oxygenic phototrophs during the dark reactions of photosynthesis?
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