In green plants, which photosystem absorbs photons to excite electrons in the reaction center?  

A.  Photosystem I
B.  Photosystem II
C.  Photosystem III
D.  Photosystem I and II
E.  Photosystem I, II and III


D.  Photosystem I and II

Biology & Microbiology

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The tuft of fenestrated capillaries at which filtration takes place in the mammalian kidney is referred to as the

A. glomerulus. B. Bowman's capsule. C. renal corpuscle. D. proximal convoluted tubule. E. collecting duct.

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Amino acids like glutamate stimulate ____ receptors on the tongue

a. bitter b. salty c. sour d. sweet e. umami

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If a trait results from genetic variation as well as environmental factors, it is known as a ________ trait

Fill in the blank(s) with correct word

Biology & Microbiology

The most dangerous form of malaria is caused by

a) Plasmodium ovale. b) Plasmodium malariae. c) Plasmodium falciparum. d) Plasmodium vivax.

Biology & Microbiology