Insects are vectors of many diseases that affect humans. List several diseases and their insect vectors. What will be an ideal response?
Malaria and yellow fever are transmitted by mosquitoes; Riketts may be transmitted by lice;
houseflies may transmit typhoid and dysentery; tsetse flies may transmit African sleeping
sickness; fleas may transmit bubonic plague.
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Fire ants, Solenopsis invicta, ________
a. have no natural enemies b. disrupt natural communities when introduced c. have a sting that is usually fatal d. are native to the United States
Which of the following microscopes provides an image that is upside-down and facing left when viewed through the eye piece?
a. dissecting b. light c. scanning electron d. transmission electron
An organelle that finishes a protein and
packages it for export is a
a. lysosome b. Golgi body c. peroxisome d. smooth ER e. rough ER
In mammals, which reaction to cold limits the amount of heat an animal loses to its surroundings?
a. shivering b. pressing hair shafts close to the body c. reducing blood flow to the skin d. going off to lie alone so that others do not take their heat