Answer:
The correct answer is B. nitrogenous bases
Explanation:
Double-stranded DNA is the genetic material in almost all the living organisms present on the earth. This DNA is present in a helical form. Each DNA strands us made up of nucleotides which are joined together by phosphodiester bond.
DNA is made up of two DNA strands therefore the two DNA strands are also joined and the two strands are joined together by hydrogen bond formation between two complementary nitrogenous bases.
These nitrogenous bases are adenine, guanine, cytosine, and thymine. Adenine and thymine are complementary to each other and guanine and cytosine are complementary to each other. Therefore the right answer is B.
Answer:
Photosynthesis makes the glucose that is used in cellular respiration to make ATP. The glucose is then turned back into carbon dioxide, which is used in photosynthesis. While water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water
Preventing areas from being developed
Answer:
Because of dark matter, gravitational interactions cause galaxies to develop.
Through dark energy, the universe is expanding at a faster and faster rate.
Explanation:
Which correctly relate dark matter and dark energy to the Big Bang theory? Select the two correct answers.
A. Through dark energy, the universe is expanding at a faster and faster rate.
B. Without dark energy, structures in the early universe would never have developed.
C. Because of dark matter, gravitational interactions cause galaxies to develop.
D. Dark energy is the source of 25 percent of the mass of the universe.
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