Which of the following characteristics of life and their descriptions is correct?
A. Responsiveness-obtaining and using oxygen to release energy from food
B. Circulation-the movement of substances in body fluids
C. Respiration-changing absorbed substances into forms that are chemically different from those that entered the body fluids
D. Assimilation-sensing changes inside or outside the body and reacting to them
Answer: B
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This type of feedback exaggerates the effects of variations from normal
A) negative B) positive C) neutral D) depressing E) All of the answers are correct.
________ processes move substances across a membrane regardless of concentration gradients.
A) Active transport B) Filtration C) Passive transport D) Diffusion E) Osmotic
Why can't a plasma protein move through the dialysis tubing of the simulated filtration membrane?
A) It is too large. B) Its shape is incompatible with receptor. C) It is too small. D) It has an opposite electrical charge.
Which of the following is not true of the effects of various factors on blood pressure?
A. An increase in vasoconstriction of blood vessels increases blood pressure. B. An increase in blood volume increases blood pressure. C. An increase in cardiac output increases blood pressure. D. An increase in peripheral resistance decreases blood pressure. E. All of these are true of the effects of various factors on the blood pressure.