What does it mean when we say a vaccine is based on an "attenuated" virus?
A) The vaccine isn't the virus at all, just similar-shaped chemicals.
B) The vaccine is based on a virus that has been rendered harmless by lab-induced mutation.
C) The vaccine is a similar species to the virus that isn't harmful (e.g., cowpox for smallpox).
D) The vaccine is a live virus that has been heat-killed.
E) The vaccine is a live virus that has been chemically damaged.
Answer: B
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Which of the following are examples of kinetic energy?
A. electrons in chemical bonds of the food molecules, proton gradients established, ATP molecules B. All of the answer choices are correct. C. electrons from food molecules moving through the electron transport chain, and protons moving through ATPase D. protons moving through ATPase by facilitated diffusion, ATP molecules E. electrons from food molecules moving through electron transport chain, proton gradients established
NADH and NADPH are activated carrier molecules that function in completely different metabolic reactions. Both carry two additional ________ and one additional _____________. This combination can also be referred to as a hydride ion
(a) protons, electron. (b) electrons, phosphate. (c) hydrogens, electron. (d) electrons, proton.
The presence of phenylpyruvic acid in urine is directly linked to ____
a. heart disease b. colon cancer c. intellectual disability d. spina bifida e. liver cirrhosis
Which of the following is controlled by the sensory-somatic nervous system?
a. heart b. lungs c. skeletal muscle d. endocrine glands