In the primary structure of a protein, amino acids are joined together by _______ bonds.
a. peptide
b. phosphodiester
c. glycosidic
d. hydrophobic
Answer: a. peptide
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The outcome of the process illustrated in Figure 26-2 is:
a. four new genetically identical cells that differ genetically from what they were before. b. four new but genetically distinct cells. c. two new genetically identical cells that differ genetically from what they were before. d. two new but genetically distinct cells. e. one male and one female cell.
Which of the following statements about enzymes is FALSE?
The active site of the enzyme is where the chemical reaction takes place. The substrate binds to the enzyme with low specificity. The enzyme undergoes a conformational change that brings substrates closer together in an induced fit. The optimal activity of an enzyme occurs over a narrow temperature range. The optimal activity of an enzyme occurs within a narrow pH range.
A probe with the sequence 5'-A-T-G-C-C-A-G-T-3' will serve as a probe for which sequence?
A) 3'-T-A-C-G-G-T-C-A-5' B) 3'-A-C-T-G-G-C-A-T-3' C) 3'-A-T-G-C-C-A-G-T-5' D) 3'-T-G-S-C-C-G-T-A-5'
The _____ and _____ are unique among vertebrates (or craniates) in that they lack jaws
A. hagfish; lampreys B. hagfish; cephalochordates C. cephalochordates; lampreys D. lampreys; cartilaginous fish E. none of these