Which of the following statements is true regarding CO2 capture and the Calvin cycle in CAM plants? Select all correct choices
A. CO2 capture occurs at night and the
Calvin cycle takes place in the day.
B. CO2 is captured in mesophyll cells and the
Calvin cycle occurs in bundle-sheath cells.
C. CO2 capture and the Calvin cycle both
occur in the same cell.
D. CO2 capture and the Calvin cycle both
occur during the day (in sunlight).
A,C
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The membrane of a gas vesicle is composed of
A) various phospholipids. B) proteins. C) carbohydrates. D) both glycoproteins and phospholipids.
Gene amplification involves:a
increasing the affinity of a gene to DNA polymerase. b. extra replication of genes that specify a certain gene product only in cells needing this product. c. improving the accuracy by which a gene is copied to produce an mRNA molecule. d. enhancing the activity of RNA polymerase. e. increasing the size of the gene that encodes a needed protein.
You are studying a biochemical pathway. Preliminary results suggest that this pathway is subject to end-product repression. This pathway is therefore most likely to be a(n) ________ pathway
A) anabolic B) catabolic C) constitutive D) induced E) unregulated
The yeast Candida albicans does not normally cause disease because of
A) symbiotic bacteria. B) antagonistic bacteria. C) parasitic bacteria. D) commensal bacteria. E) other fungi.