Describe the harmful effects of cigarette smoking on the respiratory system. What will be an ideal response?
Concepts to Consider: causes bronchial constriction; carbon particles deposit on mucus of lung
tissue; bronchial tubes secrete too much mucus (chronic bronchitis), so trapped particles cannot be
cleared from airways; alveoli lose elasticity (pulmonary emphysema), so gas exchange is impaired;
leads to shortness of breath, causing heart to pump harder and may eventually fail; smoking causes
normal cells to transform into cancer cells.
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The third line of defense, or adaptive mechanisms, are different from innate mechanisms in
that ____________________.
a. white blood cells engulf antigens b. physiological barriers play a larger role in the defense c. antigens are involved d. B- and T-cells target specific antigens
Most monocots have numerous __________ roots
arising from the stem. a. adventitious b. primary c. epidermal d. secondary e. tap
The rate of energy consumption by an animal is called
A) metabolism. B) digestion. C) metabolic rate. D) glycolysis.
Science as a way of seeking principles of order differs from art, religion, and philosophy in that:
A) science limits its search to the natural world of the physical universe. B) science deals exclusively with known facts. C) all scientific knowledge is gained by experimentation. D) all scientists wear white lab coats. E) there is no room for intuition or guessing