Channels in the plasmalemma that can open or close to regulate the passage of water, small ions, and water-soluble molecules are called ________ channels.
Fill in the blank(s) with the appropriate word(s).
gated
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Define electrocardiograph
What will be an ideal response?
Which of the following statements concerning the hypodermis is false?
A. The hypodermis attaches the skin to underlying bone and muscle. B. Hypodermis is composed of dense connective tissue with collagen and elastin fibers. C. Hypodermis is referred to as subcutaneous tissue. D. The main cell types of the hypodermis are fibroblasts, fat cells, and macrophages. E. The hypodermis is a site of fat storage.
Hydrophilic molecules readily associate with
A) lipid molecules. B) hydrophobic molecules. C) water molecules. D) acids. E) salts.
The functions of the urinary system include ________
A) maintaining acid-base and fluid balance B) excreting nitrogenous wastes C) maintaining electrolyte balance D) excreting nitrogenous wastes, maintaining electrolyte balance, and maintaining acid-base and fluid balance