Where do the enzymatic reactions of the Calvin cycle take place?
A) stroma of the chloroplast
B) thylakoid membranes
C) matrix of the mitochondria
D) cytosol around the chloroplast
E) thylakoid space
Answer: A
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In Paine’s study, the starfish are the top predators in this system and eat each of the other
species mentioned. Whelks eat both mussels and barnacles, while both mussels and barnacles are filter feeders that feed on small particles in the water, including algae and other autotrophs. In terms of the number of organisms, you would expect __________ to have the highest number of individuals
a. mussels b. whelks c. starfish d. both whelks and starfish
While chasing colorful marshmallows around your bowl of breakfast cereal with a spoon and contemplating the symptoms of ergot, you overhear a cable news report issue a rare retraction: The patients in the American Southwest previously reported to have been infected with tuberculosis have tested positive for a fungal, not bacterial, infection. Which fungus is most likely responsible?
a. Malassezia furfur (Tinea versicolor) b. Candida albicans (Thrush) c. Coccidioides immitis (Valley Fever) d. Claviceps purpurea (Ergot)
Methane gas (CH4) is an example of a
molecule containing which type of chemical bonds?
a. hydrogen bonds b. double bonds c. ionic bonds d. polar covalent bonds e. nonpolar covalent bonds
The Cholodny-Went hypothesis has been proposed to explain how plants bend toward a directional light source. What does this hypothesis suggest?
A. Plants use phototropins to receive a blue-light signal. B. The tip of the plant shoot is important for bending. C. Auxin is produced in cells in response to light and causes bending. D. Asymmetric auxin distribution causes differential cell elongation that causes bending.