Which of the following is CORRECTLY matched with its description?

A. Cell identity molecules - are primarily steroids
B. Carrier proteins - move bound ions or molecules from one side of the membrane to the other
C. Channel proteins - catalyze chemical reactions inside the cell
D. Peripheral proteins - penetrate the lipid bilayer from one surface to the other
E. Receptor proteins - move specific ions or molecules using ATP


Answer: B

Anatomy & Physiology

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Which of the following correctly matches a nuclear structure with its function?

A. nuclear pores - allow molecules to move between the nucleus and cytoplasm. B. chromatin - fluid portion of the nucleus C. chromosomes - contains RNA and histones D. nuclear envelope - contains the nucleolar organizer E. nucleolus - DNA synthesis

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A substance that can stimulate a primary immune response but is unable to produce the symptoms of a disease is a(n) ________.

Fill in the blank(s) with the appropriate word(s).

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Which of the following are masculinizing hormones produced from the adrenal gland?

a. growth hormone b. androgens c. thyroid hormone d. cortisol e. insulin

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Receptor-mediated endocytosis removes _______ from plasma, supplying cholesterol for the body.

A. triglycerides B. LDL C. HDL D. VLDL

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