Hantavirus classified in the Bunyaviridae family is transmitted via:

a. sandfly vector.
b. mosquito vector.
c. rodent excreta.
d. fecal-oral route.


C
This family of viruses contains the arboviruses, including the California encephalitis group that contains La Crosse encephalitis and the nonarthropod-borne viruses, which include hantaviruses that contain the sin nombre virus. Transmission is via mosquito, tick, and sandfly vectors, except for hantaviruses, which are zoonoses transmitted by contact with a rodent host and/or its excre-tions.

Biology & Microbiology

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In which part of the chloroplasts are the Calvin cycle enzymes located?  

A.  stroma B.  thylakoids C.  grana D.  envelope E.  cristae

Biology & Microbiology

Answer the following statements true (T) or false (F)

1. Barr bodies are a diagnostic feature of X inactivation. 2. A human cell with a Barr body always comes from a female. 3. Genomic imprinting can result in offspring with identical genotypes that have different phenotypes. 4. The DNA methylation state of a zygote will be maintained throughout the life of the organism and then passed on unchanged to its offspring.

Biology & Microbiology

Reproduction in prokaryotes is known as:

a. binary fission. b. meiosis. c. mitosis. d. sexual reproduction. e. spawning.

Biology & Microbiology

The function of carbonic anhydrase is

a. to speed up the conversion of CO2 and H2O into HCO3 ? and H+. b. to speed up the conversion of HCO3 ? and H+ into CO2 and H2O. c. to speed up the rate at which CO2 binds to hemoglobin. d. to speed up the conversion of CO2 and H2O into HCO3 ? and H+, and to speed up the conversion of HCO3 ? and H+ into CO2 and H2O. e. to speed up the conversion of HCO3 ? and H+ into CO2 and H2O, and to speed up the rate at which CO2 binds to hemoglobin.

Biology & Microbiology