The infective stage of the Cryptosporidium parvum is:

A. The Trophozoite
B. The Cyst
C. The Oocyst
D. The Sporozoite
E. The trypomastigote.


Ans: C. The Oocyst

Biology & Microbiology

You might also like to view...

The feeding mode of leeches is described as

a. predaceous. b. internal parasitism. c. external bloodsucking. d. predaceous and external bloodsucking. e. predaceous, external bloodsucking, and internal parasitism.

Biology & Microbiology

Which of the following breaks most slowly during decomposition

A) simple sugars
B) cellulose
C) chitin
D) lignin

Biology & Microbiology

________ is the first stage in glucose metabolism and does not require oxygen

Fill in the blank(s) with correct word

Biology & Microbiology

In Thomas Hunt Morgan's experiments, the ratio of red-eyed flies to white-eyed flies appeared to follow a simple Mendelian pattern of inheritance. What observation(s) did he make that led to his conclusion that the white-eyed trait was actually not a simple Mendelian trait?

A. He was able to correlate the expression of white eyes to the inheritance of an X chromosome. B. He was able to correlate the expression of white eyes to the inheritance of an X chromosome because only F2 males had white eyes and the trait is recessive. C. He saw that only males had white eyes. D. He observed that the white-eyed trait was recessive. E. He was able to correlate the expression of white eyes to the inheritance of a Y chromosome because only F2 males had white eyes and the trait is recessive.

Biology & Microbiology