A medium containing known substances in precise amounts is known as a ________ media.
A) selective
B) complex
C) natural
D) defined
Answer: D) defined
You might also like to view...
Which of the following statements about hydrostatic skeletons is false?
A. Longitudinal muscle contractions increase the length of the body cavity. B. Hydrostatic skeletons are found in many vascular plants and almost all multicellular animals. C. Movement is produced by muscles that exert pressure against a fluid-filled cavity. D. Intervertebral discs and cartilage are examples of hydrostatic elements in the vertebrate skeletal system. E. Circular and longitudinal muscles function as antagonists.
Which of the following couples would NOT ordinarily be encouraged to seek genetic counseling?
A. Those who plan to raise large families. B. Those with a child who has an inherited disorder or birth defect. C. Those who are first cousins. D. Those who have had babies who died in infancy or before birth. E. Those whose occupations may pose a risk to pregnancy.
Callaway and Aschehoug's study concluded that an invasive Eurasian grass species can outcompete native North American grasses through
A. faster seed germination. B. secretion of allelochemicals. C. anti-herbivore compounds. D. producing more viable seeds. E. producing seeds year-round.
When fermentation occurs in grapes left on the vine, the final product is the ethanol used to make wine. When fermentation occurs in our muscles, the final product is:
a) oxygen. b) 2 lactic acid molecules. c) 2 NADH molecules. d) 2 ATP molecules. e) ethanol as well.