The Portuguese man-of-war belongs to the class:A
Cnidozoa.
B. Scyphozoa.
C. Hydrozoa.
D. Anthozoa.
E. Cubezoa.
C
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The figure below shows a Paramecium, a single-celled freshwater protist. The hairlike structures visible on the Paramecium allow it to move. These structures are ________.
A) microfilaments B) intermediate filaments C) flagella D) cilia
Typically ________ of ORFs in a genome cannot clearly be assigned a function. These ORFs are usually assigned and predicted to encode hypothetical proteins
A) < 1 % B) 5 % C) 30 % D) 90 %
Suppose one strand of a "mini-gene" has the base sequence TACCCGGATTCA. If we assume no introns are involved, how many amino acids does the polypeptide encoded by this gene have?
A) 12 B) 6 C) 2 D) 4
To say that an enzyme has been denatured means that
A) the enzyme is working at an optimal temperature. B) an inhibitor has bound the enzyme at the active site. C) the enzyme is working at its maximal rate. D) its three-dimensional structure has changed and the enzyme can no longer function properly.