The structure at the tip of the red arrow is the ______ ______ of this enzyme.
Fill in the blank(s) with the appropriate word(s).
Ans: active site
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Ribozymes
a. are RNA catalysts. b. are proteins that catalyze RNA synthesis. c. are RNA molecules that slow the rate of protein synthesis. d. are the products of RNA degradation. e. are amino acids that catalyze RNA synthesis
Among carnivores ________ is not the major advantage of living in a group
a. caring for one's young b. protection of territory c. transmission of cultural traits d. hunting success e. fending off scavengers
When cytokinins are sprayed on leaves of a cut stem, the leaves become, or remain, yellow. Indicate whether the statement is true or false
________ are a component of the immune system that are able to destroy cancer cells by deploying toxins into infected cells as a means of killing them. In this role they are cytotoxic—that is, "cell killing."
A) Natural killer cells B) Phagocytes C) Antibodies D) B cells