In a forest, trees that get more sunlight grow taller than other nearby trees. This is a form of ________
A. artificial selection.
B. stabilizing selection.
C. disruptive selection.
D. directional selection.
E. natural selection.
Answer: D
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Which of the following are not transported in phloem?
A. sugars B. amino acids C. hormones D. large starch molecules E. RNA
Cristae are
A) types of genes. B) types of insects. C) membranous structures that are parts of mitochondria. D) bits of sugars in the Golgi apparatus.
You identify an enzyme involved in a cellular reaction. How does the enzyme affect the reaction equilibrium between reactants and products and the time needed to reach equilibrium?
A. The reaction equilibrium is unaffected, but it lengthens the time needed to reach equilibrium. B. The reaction equilibrium is unaffected, but it shortens the time needed to reach equilibrium. C. It alters the reaction equilibrium and shortens the time needed to reach equilibrium. D. It alters the reaction equilibrium and lengthens the time needed to reach equilibrium.
During which stage of interphase do chromosomes make a copy ofthemselves?
A. Mitosis B. Growth 1 C. Growth 2 D. Synthesis