All of the following diseases are transmitted by
insects EXCEPT
a. malaria
b. African Sleeping Sickness
c. Bubonic Fever
d. AIDS
e. Chagas Disease
Answer: d
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Some of the most dramatic evidence for evolution has come from human agriculture. One of the most highly artificially selected crop plants is
A. peas. B. tomatoes. C. potatoes. D. corn. E. asparagus.
Recall that the bullhorn acacia forms a symbiosis with P. ferruginea ants. A researcher takes an acacia seed and plants it in an area without P. ferruginea. What will happen to this acacia plant?
A. It will immediately form a symbiotic relationship with ants native to the area. B. It will begin producing alkaloids and terpenes to deter herbivores. C. It will begin to produce hairs on its leaves to deter herbivores. D. Without P. ferruginea, the plant won't form any new defenses and will be eaten by herbivores.
If you observe the activity at the cell membrane as the action potential passes, first you will see ________ the cell, then you will see ________ the cell
a. NA+ enter; K+ leave b. NA+ leave; K+ enter c. NA+ leave; NA+ enter d. K+ enter; NA+ leave e. K+ leave; NA+ enter
Staining with dye is a technique typically used to enhance contrast and visualization of cellular structures. Which microscope magnifies passing light directly through a specimen?
a. a fluorescence microscope b. a bright field microscope c. a confocal laser scanning microscope d. a phase-contrast microscope