The Krebs cycle begins when acetyl-CoA combines with _________ to form ____________
A. pyruvate; citrate
B. malate; oxaloacetate
C. oxaloacetate; malate
D. oxaloacetate; citrate
E. citrate; cis-aconitate
D
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Which of these terms defines how the organism allocates resources to growth, reproduction, and activities or structures related to survival?
A) survivorship B) life history C) energy budget D) demography
Newborn screening reveals that newborn Jessica has inherited phenylketonuria (PKU). Her parents are distraught at the diagnosis, but a nutritionist explains that Jessica can be treated, right away. The treatment for PKU is
A) nonheritable gene therapy. B) heritable gene therapy. C) exchange of her blood supply. D) dietary.
What drives the movement of carbon dioxide from tissue into the bloodstream?
A. active transport against a concentration gradient B. facilitated diffusion down a concentration gradient C. simple diffusion down a concentration gradient D. facilitated diffusion against a concentration gradient E. the heart pumping the carbon dioxide into the bloodstream
The cessation of smoking may do all of the following EXCEPT
a. can reduce the risk of stillbirth. b. reduces the chances of cancer. c. reduces the chances of coronary disease. d. improves lung functioning. e. increase chances of sleep apnea.