The accumulation of amino acids and sugars in animal cells can occur through
A. coupled transport.
B. glucose pumps.
C. sodium-potassium pumps.
D. proton pumps.
E. ATP pumps.
Answer: A
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During which phase(s) of mitosis are chromosomes composed of two sister chromatids?
a. prophase and prometaphase only b. prophase, prometaphase and metaphase c. prophase, prometaphase, metaphase and anaphase d. anaphase and telophase only e. all phases of mitosis
In Tay-Sachs disease, which organelle is
affected?
a. lysosomes b. mitochondria c. Golgi bodies d. nuclei e. rough endoplasmic reticula
How does the evidence for the theory of common descent demonstrate consilience?
A) scientific evidence is refuted by other scientists B) new evidence can be added to the theory of common descent C) observations driven from different sources agree on the findings. D) new evidence cannot be added to the theory of common descent
Genetic diversity in bacteria is created by mutation and ________.
Fill in the blank(s) with the appropriate word(s).