Which of the following stages in the breakdown of the piece of toast you had for breakfast generates the most ATP?
(a) the digestion of starch to glucose
(b) glycolysis
(c) the citric acid cycle
(d) oxidative phosphorylation
Choice (d) is the correct answer. Oxidative phosphorylation produces about 28 ATP molecules. Choice (a) produces no ATP; choice (b) nets 2 ATP; choice (c) produces 1 GTP.
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How has Earth's atmosphere been influenced by the fact that, as part of the carbon cycle, some amount of carbon is stored in sedimentary rocks and is not immediately re-introduced back into the atmosphere?
A. The storing of carbon in sedimentary rocks allowed for Earth's atmosphere to remain the same for the last 4 billion years. B. The storing of carbon in sedimentary rocks allowed for oxygen to become a main component of the Earth's atmosphere. C. The storing of carbon in sedimentary rocks resulted in carbon not becoming an integral part of Earth's atmosphere. D. The carbon cycle is not related to the composition of Earth's atmosphere.
A mass of hyphae in an ascomycete is commonly referred to as a(n)
A. mycelium. B. mycorrhizae. C. conidium. D. sporangium. E. ascus.
In what order do sperm move through the structures of the female reproductive tract?
A. cervix, vagina, uterus, oviduct B. vagina, uterus, oviduct, ovary C. vagina, cervix, uterus, oviduct D. endometrium, cervix, uterus, oviduct E. ovary, oviduct, uterus, vagina
Hormones are cleared from the body by endocrine glands
Indicate whether the statement is true or false.