Trypanosoma is an organism that causes african sleeping sickness and is transmitted to a human by a ____

a. mosquito
b. tsetse fly
c. kissing bug
d. tick
e. none of the above


Ans: b. tsetse fly

Biology & Microbiology

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Species richness on an island is determined by ____

a. distance from the mainland only b. island size only c. the type of species on the island only d. distance from the mainland and island size e. distance from the mainland and type of species on the island

Biology & Microbiology

Bollworms raised for decades in a lab without exposure to Bt were while those fed Bt were .

A. Rr; rr B. rr; RR C. Rr; RR D. RR; rr E. RR; Rr

Biology & Microbiology

Give the sex-chromosome constitution (X and Y chromosomes) and possible genotypes of offspring resulting from a cross between a white-eyed female (Xw XwY) and a wild-type male (normal chromosome complement) in Drosophila melanogaster

Include all zygotic combinations whether viable or unviable.

Biology & Microbiology

Keratin filaments are anchored to junctions called

a. adherens junctions. b. tight junctions. c. desmosomes. d. gap junctions. e. neuromuscular junctions.

Biology & Microbiology