Large proteoglycan aggregates may contain a hyaluronin molecule bound to the core protein of multiple proteoglycan molecules.

a. true
b. false


Ans: a. true

Biology & Microbiology

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Rubisco's enzymatic activity is stimulated by NADP+ and ADP

a. True b. False

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The occurrence of an RNA world early in the history of life can never be proven, but experiments with _____ have

shown that it is feasible. a. in vitro evolution b. Darwin’s evolution c. indirected evolution d. chemical evolution e. biological evolution

Biology & Microbiology

The most common method of asexual reproduction in protists is ________.

A. cytokinesis B. fission C. fragmentation D. budding

Biology & Microbiology

________ 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

Biology & Microbiology