Watson and Crick used evidence from several studies to determine the structure of DNA. What conclusion were they able to draw from Rosalind Franklin's X-ray diffraction data, specifically?
A) DNA consists of four types of nucleotide bases: A, T, C, and G.
B) DNA nucleotides form complementary base pairs.
C) Adenine pairs with thymine and cytosine pairs with guanine when they are on opposite DNA strands.
D) DNA is a duplex, with two strands forming a double helix.
E) The DNA strands are antiparallel, and the strands are held together by hydrogen bonds.
D
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Cells are largely constructed from four classes of large molecules called ____________________
Fill in the blank(s) with correct word
The hormone most involved in triggering abscission is:
a. auxin. b. nitric oxide. c. cytokinin. d. ethylene. e. phytochrome.
Land plants most likely evolved from
a. chlorophytes. b. cladophorophytes. c. chaetophytes. d. charophytes. e. coccinophytes
Anything that prevents ATP formation will most likely
A) result in cell death. B) force the cell to rely on lipids for energy. C) force the cell to rely on ADP for energy. D) have no effect on the cell.