Calcium ions bind to
A. cross bridges.
B. actin.
C. troponin.
D. tropomyosin.
E. myosin.
Answer: C
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Allosteric inhibitors are often ____
a. substrates of the reactions they regulate b. products of the reactions that they regulate c. charged amino acids in the active site d. large, complex organic molecules e. competitive inhibitors
In this depiction of transcription (accompanying figure), the ____ strand is ____ because it ____
a. upper; RNA; contains guanine b. upper; RNA; contains uracil c. lower; RNA; contains thymine d. upper; RNA; has no uracil e. lower; DNA; contains adenine
Misting tomato plants with wintergreen tea can help prevent mosaic virus from infecting the plant. How?
What will be an ideal response?
An ineffective clonal deletion may lead to:
a. Allergic reactions b. Sepsis c. Autoimmunity d. All of the above