The hypothesis that mitochondria and chloroplasts originated from the phagocytic activity of
prokaryotes that was not followed by digestion is called the
a. theory of natural selection.
b. endosymbiotic hypothesis.
c. ribozymes-first hypothesis
d. Oparin-Haldane hypothesis.
e. stromatolite hypothesis
B
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In the figure above, what absorbs photons of both blue and red light?
a. 5 with 3 b. 5 with 4 c. 5, regardless of the R group d. 6 e. 7
Precipitation tests involve all of the following, except
A.) they rely on formation of visible clumps for detection B.) they include the VDRL test for syphilis C.) they are often performed in agar gels D.) they can be done in a test tube by carefully adding antiserum over antigen solution E.) a cloudy or opaque zone developing where antigen and antibody react
In lakes, rooted plants may grow in the ________ zone but no photosynthesizing life is found in the ________ zone
A) littoral; profundal B) profundal; pelagic C) littoral; benthic D) benthic; profundal E) littoral; pelagic
Figure 4.2 represents a (dichotomous/classification/taxonomic) key of the type used to identify a microbe.
Fill in the blank(s) with the appropriate word(s).