Why do living organisms have the potential for errors (mutations and/or variations) in their development?
a. so that organisms may contribute to evolution
b. so that organisms may live unchanged
c. so that organisms may die unchanged
d. so that organisms may contribute to reproduction
Ans: a. so that organisms may contribute to evolution
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Which of the following statements about the speed of impulse conduction in a neuron is true?
a. Longer axons can transmit impulses faster than shorter ones. b. Unmyelinated axons transmit impulses faster than myelinated ones. c. Shorter axons can transmit impulses faster than longer ones. d. Nerve impulses travel faster than the speed of light. e. Unmyelinated axons with larger diameters transmit impulses faster than ones with small diameters
Which of the following statements regarding prokaryotes is false?
A) Prokaryotic chromosomes are more complex than those of eukaryotes. B) Most prokaryotes reproduce by binary fission. C) Prokaryotic cells are generally smaller and simpler than eukaryotic cells. D) In prokaryotes, daughter chromosomes are separated by an active movement away from each other and the growth of a new plasma membrane between them.
You received your genetic material from your parents in the form of DNA. Your DNA provides your cells with instruction for making ________
A) cholesterol B) polysaccharides C) lipids D) proteins
Which of the following media is useful for cultivating fungi?
A. Sabouraud's agar B. Mueller tellurite C. tomato juice agar D. phenylethanol agar E. MacConkey agar