Scientists isolate two different cells from the same organism at different points in the cell cycle. Cell A has 1.5 times the DNA content of cell B. Which of the following is true?
A) cell A is in G1 phase; cell B is in G2 phase
B) cell B is in G1 phase; cell A is in G1 phase
C) cell A is in S phase; cell B is in G1 phase
D) cell B is in S phase; cell A is in G1 phase
E) cell A is in S phase; cell B is in G2 phase
C
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The smallest unit of heredity is a chromosome.
Answer the following statement true (T) or false (F)
How does the wheat stem rust fungus harm its
host plant?
a. by blocking the flow of water through the plant b. it interferes with the photosynthetic process c. it absorbs plant sugars made in photosynthesis d. it blocks the formation of wheat seeds e. it interferes with flowering
Which proteins facilitate RNA polymerase binding at promoters?
What will be an ideal response?
Integrins are glycoproteins that help link the cytoskeleton and the
A. cell wall. B. cytoplasm. C. extracellular matrix. D. ribosomes.