Which of the following are characteristics of the Calvin cycle?
A. The Calvin cycle produces glucose as an end product.
B. The Calvin cycle produces carbon dioxide and water.
C. Nitrogen is fixed into an organic form during the Calvin cycle.
D. The Calvin cycle requires light.
E. All of these choices are correct.
Answer: A
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Answer the following statements true (T) or false (F)
1. If a cell contains 20 chromosomes in G1, it will contain 40 chromosomes at the end of S. 2. During prometaphase, the sister chromatids organize into a single row in the center of the cell. 3. A cell undergoing meiosis that contains sister chromatids may be either haploid or diploid. 4. One major difference between metaphase I and metaphase II is the presence or absence of bivalents.
Which of the following is an example of a vestigial structure?
a. wings on a pigeon b. wings on an insect c. wings on an ostrich d. wings on a bat
Which of the following amino acids is not one of the 20 common amino acids found in cells?
A) leucine B) isoleucine C) glutamine D) proline E) pyrrolysine
Which of the following bind the constant region of IgE?
A) eosinophils B) mast cells C) monocytes D) both mast cells and monocytes E) both eosinophils and mast cells