Lamarck's hypothesis that traits acquired during the lifetime of an individual are passed on to progeny:
a. was interesting, reasonable, and based on an idea that was universally accepted by scientists and nonscientists alike.
b. connected evolutionary change to environmental fit.
c. Both of the above.
d. None of the above.
C
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At about pH 7 in most cells, what happens to the amino R-group on an amino acid?
A) It acts as a base and gains a proton, giving it a positive charge. B) It acts as an acid and loses a proton, giving it a negative charge. C) It is reduced, and tends to act as an electron donor in redox reactions. D) It remains neutral, like water, and does not have a charge.
Most deserts occur near ____ latitude because of dry descending air masses
a. 0? b. 10? c. 20? d. 30? e. 40?
Embryonic development includes all of the following except
a. cleavage. b. fertilization. c. gastrulation. d. organogenesis. e. growth.
In ferns
a. xylem and phloem are present in the sporophyte. b. the sporophyte is the dominant generation. c. the leaf is called a frond. d. all of the above are true.