Ras proteins are of interest to researchers because of their role in ____

a. reproduction
b. linking plant hormones to germination
c. the development of many types of cancer
d. relieving cluster headaches
e. eliciting the fight-or-flight response


ANSWER: c

Biology & Microbiology

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Match the type of membrane protein with its function. Responses may be used multiple times or not at all. a. anchor b. transporter c. enzyme d. receptor

___ allows for the movement of ions across a membrane ___ attaches to another protein ___ binds signals from outside the cell ___ facilitates the movement of molecules across the membrane What will be an ideal response?

Biology & Microbiology

The thick filament is composed almost entirely of _____ molecules.

A. actin B. myosin C. troponin D. tropomyosin E. thrombin

Biology & Microbiology

Cellulose is ____.

A. a polysaccharide found in cell walls of plants B. a component of cell membranes C. an oligosaccharide found in animals D. formed by hydrolysis of monosaccharides E. a component of invertebrate exoskeletons

Biology & Microbiology

When physical barriers are broken down, which of the following is the human body's next line of defense against infection or disease?

What will be an ideal response?

Biology & Microbiology