Many medical studies show that patients who receive a treatment feel better even if the treatment was an ineffective sugar pill. What is this phenomenon called?
A. The control group
B. The placebo effect
C. The blind effect
D. The fake effect
Answer: B
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A polypeptide is ________.
A. a long chain of amino acids B. a long chain of fatty acids C. a long chain of glucose D. a long chain of nucleic acids
Which of the following steps in the Kreb's cycle directly produces a molecule of ATP (or GTP)?
a. citrate ? isocitrate b. isocitrate ? ?-ketoglutarate c. succinyl CoA ? succinate d. succinate ? fumarate e. malate ? oxaloacetate
Why is oxygen needed in cellular respiration?
A) Oxygen combines with ADP to create ATP. B) Oxygen is the final electron acceptor in the electron transport chain. C) Oxygen carries electrons from the citric acid cycle to the electron transport chain. D) Fermentation in muscle cells relies upon oxygen as an electron acceptor.
A coin is flipped four times. What is the probability that it will land on tails all four times?
a. 1/8 b. 1/4 c. 1/16 d. 1/2