Answer the following questions true (T) or false (F)

1. A tRNA molecule carries an anticodon which is complementary to a specific mRNA codon.

2. You determine a cell to lack both centrioles and mitotic spindle fibers and conclude it will not be able to complete mitosis.

3. Cytokinesis occurs concurrently with telophase of the M phase of the cell cycle.


1. TRUE
2. TRUE
3. TRUE

Anatomy & Physiology

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During contraction of skeletal muscle fibers, the

a. contractile proteins contract. b. thin filaments slide inward toward the A band's center as a result of cycles of cross-bridge binding and bending. c. thick and thin filaments become tightly coiled, thus shortening the sarcomere. d. I bands slide in between the A bands. e. lateral sacs of the sarcoplasmic reticulum shrink, pulling the Z lines closer together.

Anatomy & Physiology

The ionic concentrations in the interior and exterior of body cells ________

A) reveal an excess of Na+ ions in the intracellular fluid B) reveal an excess of K+ ions in the extracellular fluid C) reveal an excess of Na+ ions in the extracellular fluid D) are the same

Anatomy & Physiology

About 96% of the body consists of what four elements?

A. Oxygen, hydrogen, carbon, and sodium B. Oxygen, hydrogen, carbon, and nitrogen C. Oxygen, hydrogen, glucose, and carbon D. Oxygen, hydrogen, carbon, and copper

Anatomy & Physiology

Which hormone-secreting cells are found in the thyroid gland?

A) Chromaffin cells B) Follicular cells C) Islet cells D) Chief cells

Anatomy & Physiology