Vasily thinks that drinking alcohol heightens his alertness and awareness of his surroundings and that he is a better driver after drinking several beers. Persuade him otherwise
What will be an ideal response?
Alcohol actually depresses the activity of the brain's neurons and removes inhibitions. It also reduces concentration and slows reflexes. This impairment of the nervous system will clearly make it more difficult for Vasily to drive safely.
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Select the immunoglobin (Ig) classes that is correctly matched to their facts. Check all that apply.
_____ IgA—found in saliva, tears, the GI tract, and mother's milk _____ IgD—serve as receptors on the surfaces of T cells _____ IgE—promotes the release of histamine from mast cells and basophils, causing allergy symptoms _____ IgG—a minor form of immunoglobulin, used only in response to parasitic worms _____ IgM—first secreted during primary response, promotes agglutination, activates complement
If you didn't consume enough niacin (vitamin B3), you would have diarrhea since you would have what disease?
A. scurvy B. pellagra C. rickets D. beriberi E. anemia
In meiosis, chromosomes containing sister chromatids (not homologous chromosomes) align along the center of the cell during
a)prophase I. b)prophase II. c)interphase II. d)metaphase I. e)metaphase II.
Answer the following questions true (T) or false (F)
1. Water and plasma proteins make up about 99 percent of blood plasma. 2. Because they are cell fragments, not cells, platelets are a component of plasma, not a formed element. 3. Ions in plasma are also known as electrolytes.