Prokaryotic cell movement is attributed to:
A. pili.
B. flagella.
C. ribosomes.
D. capsules.
E. cytoskeleton proteins.
B. flagella.
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Of the following, which are properly considered "propulsive industries"?
A) department and grocery stores B) local mom and pop businesses C) shipbuilding and automobile manufacturing plants D) community libraries and hospitals E) both local mom and pop businesses and community libraries and hospitals
Which of the following is the primary source of energy for chemoautotrophs?
a. inorganic molecules b. living organisms c. previously living organisms d. sunlight
Colon polyps
a. are mostly benign but some may become cancerous. b. are difficult to cure. c. are small growths that project from the wall of the small intestine. d. are responsible for 500,000 deaths in the U.S. every year. e. are usually benign but may become cancerous and are responsible for 500,000 deaths in the U.S. every year.
The internal urethral sphincter is composed of smooth muscle, and the external urethral sphincter is composed of skeletal muscle; together, they control the process of urination
Indicate whether the statement is true or false