What are the three main components of connective tissue?
A) ground substance, fibers, and cells
B) alveoli, fibrous capsule, and secretory cells
C) collagen, elastin, and reticular fibers
D) fibroblasts, chondroblasts, and osteoblasts
A) ground substance, fibers, and cells
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Which of these hormones can enter the target cell and bind to receptors in the nucleus?
A. Luteinizing hormone B. Insulin C. Testosterone D. Growth hormone E. Angiotensin
Which of the following is NOT true of a gene?
A. It is all the triplets needed to make a functional RNA or protein. B. It is a segment of a DNA molecule. C. Each chromosome contains one gene. D. It is the functional unit of heredity. E. All of these are true of a gene.
Sodium ions and calcium ions are examples of
A. salts. B. uncharged particles. C. anions. D. cations.
Which law states that the total pressure of a gas mixture is equal to the sum of the partial pressures of its individual gases?
A) Valsalva's B) Charles's C) Dalton's D) Henry's E) Boyle's