Smoker's cough results from damage to the external structure of lung cells by tobacco smoke. What part of the cell would you predict is damaged?

A) the mitochondria
B) plasmodesmata
C) the Golgi complex
D) the lysosome
E) cilia


Answer: E

Biology & Microbiology

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The ____ feeds on penguins and other seals

a. Guadalupe fur seal b. elephant seal c. Steller's sea lion d. leopard seal e. harbor seal

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The signal/messenger responsible for opening the gated channel in Figure 42-4 is:


a. ATP.
b. ADP.
c. cAMP.
d. K+.
e. Na+.

Biology & Microbiology

The greenhouse gas presently at highest concentration in the Earth’s atmosphere is methane

___________________ Indicate whether the statement is true or false.

Biology & Microbiology

Which theory about the cause of colony collapse disorder has no evidence?

a. that pathogens are the cause b. that interference from cellphone towers is the cause c. that pests are the cause d. that drought is the cause

Biology & Microbiology