Which of the following is the correct structure of a nucleotide?
A) Base-sugar-base B) Phosphate-sugar-phosphate
C) Phospholipid-base-sugar D) Phosphate-sugar-base
D
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A hydrogen bond between the amino acid side groups (R groups) of two different polypeptide chains in a multichain
protein would be considered part of the ____ structure of the protein.
a. primary b. secondary c. tertiary d. quaternary e. linear
You wish to learn if the initiation of root hair formation depends on either translation or transcription. Roots were treated with actinomycin D, cycloheximide, and mock treated with a control solution without either of the two inhibitors. You find that root hair initiation was inhibited when mock treated with the control solution and in the presence of either cycloheximide or actinmycin D. From this you can conclude that:
A) Both transcription and translation are required. B) Only transcription is required. C) Only translation is required. D) More data is needed.
Which of the following genetic elements is transcribed into a single mRNA?
a. The inducer b. The repressor c. The promoter d. The operator e. The structural genes
Visible light ranges from (A)_________ to (B)_____________.
a. (A) 300nm, (B) 700nm b. (A) 200nm, (B) 800nm c. (A) 400nm, (B) 900nm d. (A) 400nm, (B) 700nm