Charles darwin is famous for his
a. theory of origin of life
b. theory of evolution
c. atomic theory
Ans: b. theory of evolution
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Which of the following is a major cause of health-care-associated infections in the United States?
A. Streptococcus pneumoniae B. Streptococcus pyogenes C. Staphylcoccus aureus D. Alpha hemolytic streptococci
Cubozoans are known for the boxy shape of their medusa form. At the corners of this square bell canopy are muscular pads. What are these called?
a. nematocysts b. gemmules c. pedalia d. ephyra
Which of the following is an accessory system of vessels and organs that helps balance the fluid
content of the blood and surrounding tissues?
a. Circulatory system. b. Non-circulatory system. c. Accessory vessel system. d. Lymphatic system. e. Heart.
Which statement about plasma membranes is false?
a. Plasma membranes regulate the passage of materials. b. Plasma membranes divide the cell into compartments. c. Plasma membranes serve as surfaces for chemical reactions. d. Plasma membranes prevent communication with other cells. e. Plasma membranes transmit signals between the environment and the interior of the cell.