Long term use of heroin is associated with which set of consequences?
A. anxiety, jitters, insomnia, headaches
B. weight gain, poor cognitive performance, irritability
C. addiction, hepatitis, HIV/AIDS, various bacterial infections
D. apathy, euphoria, hallucinations
E. cardiac and/or respiratory arrest, sudden death
Answer: C
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Under what circumstances does membrane transport require energy?
A) wherever large molecules are moved within a cell B) whenever a solute is moved against its electrochemical gradient C) whenever an ion moves through a phospholipid bilayer membrane D) whenever oxygen moves through a phospholipid bilayer membrane
During protein starvation, the osmotic pressure forcing fluid into the blood on the venous side of capillary beds could drop below the blood pressure, then
A. hemoglobin will not release oxygen. B. fluids will tend to accumulate in tissues. C. the pH of the interstitial fluids will increase. D. most CO2 will be bound to hemoglobin and carried away from tissues. E. plasma proteins will escape through the endothelium of the capillaries.
What is the fourth step of a muscle contraction?
What will be an ideal response?
What are chemical messengers that control growth differentiation and the metabolism of specific target cells called?
a) hormones b) neurons c) glands d) second messengers