Which of the following is produced during the events of the citric acid cycle?
a. ATP
b. water
c. oxygen
d. glucose
a. ATP
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Inversions are contained within what percent of the human population?
A. Less than 1% B. Approximately 2% C. Approximately 5% D. Greater than 10%
How does sickle cell anemia reduce the blood’s ability to deliver oxygen to tissues?
a. The plasma membrane is too thick to allow oxygen to diffuse into sickle-shaped red blood cells. b. Sickle-shaped red blood cells puncture normal red blood cells, causing them to rupture and lose hemoglobin. c. Deformed red blood cells clog capillaries, preventing other red blood cells from passing through. d. Sickle cells contain a mutated form of hemoglobin that binds to half as many oxygen molecules.
Which statement is true?
a. Long-term energy storage, such as body fat reserves for hibernation, do not factor into a species’ energy budget. b. A species’ life history is determined entirely by natural selection and the inheritance of genetic material. c. All organisms must balance the energy they expend on activities with energy intake from diet or photosynthesis. d. Increased fecundity corresponds to an increased energy budget for most animals.
Cushing's syndrome causes weight gain, excessive sweating, and muscle weakness. It can result from either the production of abnormally high levels of cortisol by the body or overuse of glucocorticosteroid drugs. You are an endocrinologist working with a Cushing's syndrome patient. She is on hormonal birth control pills and takes an occasional ibuprofen.Results from lab tests reveal abnormally high endogenous hormone levels, and you suspect a possible tumor. What regions will you ask the MRI technician to focus on?
A. Hypothalamus and posterior pituitary B. Adrenal cortex only C. Anterior and posterior pituitary D. Hypothalamus, anterior pituitary, and adrenal cortex