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.
You might also like to view...
In the experiment above, guppy color patterns (spots) were measured in populations exposed to increasing amounts of predation. From this you could conclude that ____ .
A. evolutionary changes take millions of years to appear
B. predators are less likely to catch and eat brightly colored guppies
C. predators are more likely to catch and eat brightly colored guppies
D. brightly colored guppies are more likely to reproduce in the presence of predators
E. predators do not affect the color patterns of guppies
Which major checkpoint delays the cell cycle when DNA replication is incomplete?
A. G1 checkpoint B. G2 checkpoint C. M checkpoint D. G1, G2, and the M checkpoints E. None of the checkpoints delay the cell cycle when DNA replication is incomplete.
The night prior to a football game, the coach tells his students to eat pasta to “carbo load”
their bodies. Excess carbohydrates are stored as __________ in animals.
a. glucose b. simple sugars c. glycogen d. starch
Transformation involves contact between two bacterial cells, followed by the unidirectional transfer of
plasmid genes.
Indicate whether the statement is true or false.