Species that retain the eggs within the female but do not nourish them via a placenta are:
A. ovoviviparous
B. viviparous
C. oviparous
D. hermaphroditic
E. parthenogenetic
A. ovoviviparous
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What happens to pyruvate during the process of fermentation?
A. It is oxidized to ethanol. B. It is reduced to ethanol. C. It is converted to acetyl Co-A. D. It is oxidized to lactic acid. E. It gets converted to pyruvic acid.
Which of the following regulates the fluidity of the plasma membrane?
a. Temperature b. Cholesterol c. Carbohydrate d. Protein
____ tissue allows the body to detect and respond to internal and external changes
a. Nervous b. Adipose c. Epithelial d. Connective e. Skeletal muscle
Which of the following statements is NOT true?
a. A lipid bilayer is characteristic of all membranes. b. Cellular organelles are associated with membranes. c. In a plasma membrane, a hydrophilic portion is oriented to the outside of the cell. d. Lipid molecules make the cell membrane relatively impermeable to water-soluble substances. e. Even by using extremely high magnification, an electron microscope cannot reveal the substructure of cell membranes.