Drifting freely in the upper, well-illuminated waters of the ocean, a diverse biological community exists, primarily consisting of microscopic organisms called
A. phytoplankton.
B. archaeans.
C. detritus.
D. benthos.
E. bacteria.
A. phytoplankton.
Biology & Microbiology
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The secondary structure of a protein forms ____
a. pleated sheets or coils b. when pleated sheet regions fold back on themselves c. from interactions between polypeptide chains d. from covalent bonding between amino acids e. a functional chromatin unit
Biology & Microbiology
How long would it take to transfer genes a and b to an F- cell?
a. 1 minute b. 7 minutes c. 90 minutes d. 4 minutes e. 6 minutes
Biology & Microbiology
There are how many different kinds of amino acids in proteins?
a. 3 b. 6 c. 12 d. 20 e. 28
Biology & Microbiology
Plants provide us with a variety of goods. Which of the following is NOT provided by plants?
A) Cotton B) Nylon C) Wood D) Cooking oil E) Pleasure
Biology & Microbiology