During the Calvin cycle, plants:
A) fix CO2 into sugar. B) create ATP.
C) convert solar energy to chemical energy. D) oxidize H2O to oxygen.
Answer: A
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The following question(s) relate to the data table below, showing typical fluctuating pH and dissolved oxygen levels in a fish pond with a heavy concentration of algae over a 24-hour period.TimeOxygen (ppm)pH2 a.m.4.57.74 a.m.2.87.26 a.m.2.26.88 a.m.2.56.810 a.m.3.97.2Noon6.57.72 p.m.10.08.34 p.m.12.18.86 p.m.13.19.28 p.m.13.09.210 p.m.12.08.8Midnight10.88.3Upon closer examination, the fish appeared to have died from a lack of oxygen. What time of day did the fish most likely die?
A. At sundown B. Around midnight C. In the middle of the afternoon D. Just before dawn
Which pathway shows the correct path of electron transfer from a molecule of FADH2?
A. succinate reductase ? ubiquinone ? cytochrome oxidase ? cytochrome b-c1 ? cytochrome c ? O2 B. succinate reductase ? ubiquinone ? cytochrome b-c1? cytochrome c ? cytochrome oxidase ? O2 C. ubiquinone ? cytochrome b-c1? cytochrome c ? cytochrome oxidase ? NADH hydrogenase ? O2 D. succinate reductase ? ubiquinone ? cytochrome b-c1? cytochrome c ? cytochrome oxidase ? O2 E. ubiquinone ? cytochrome b-c1? cytochrome c ? NADH hydrogenase ? cytochrome oxidase ? O2
People with autism have lower levels of _____, a hormone that contributes to bonding behavior in other mammals
a. oxytocin b. prolactin c. estrogen d. LH
What is a Hartig net?
a. an ecosystem containing lichen that act as both producers and decomposers b. layer of fungi that surround roots, forming a thick exterior sheath *c. formation of hyphae enveloping the outer layer of root cells inside the mantle d. sticky, hair-like fungus that hang from tree branches to catch and digest insects 15. What are endophytes? a. Decomposing fungi that live on rotting plant and animal matter, breaking it down. b. Pathogenic fungi that live inside animals and destroy tissues by releasing toxins. c. Mutualistic fungi that live inside plants and provide their hosts with various benefits. d. Symbiotic fungi that live on tree bark without disturbing or benefitting their hosts.