According to the clip, the light-capturing pigment molecules are called:

a) stroma.
b) photosystems.
c) photons.
d) electrons.
e) carotenoids.


Answer: b) photosystems.

Biology & Microbiology

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Many male songbirds have very distinctive songs that are used to attract females. These songs are an example of a ________ isolating mechanism.  

A.  postzygotic, ecological B.  prezygotic, behavioral C.  prezygotic, temporal D.  postzygotic, mechanical E.  prezygotic, gamete fusion

Biology & Microbiology

What is one component that is needed to perform a PCR?

A. primers B. DNA ligase C. RNA polymerase D. deoxynucleoside triphosphates

Biology & Microbiology

Anaphase

a. involves the lining up of the chromosomes across the equatorial plate. b. is the same in mitosis and meiosis I and II. c. is initiated when the chromosomes begin to move apart. d. results in an unequal distribution of chromosomes to the resulting cells. e. does all of these.

Biology & Microbiology

The Ebola virus targets cells of the

a. liver. b. kidney. c. spleen. d. liver and spleen.

Biology & Microbiology