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.
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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
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.
Reproduction in prokaryotes is known as:
a. binary fission. b. meiosis. c. mitosis. d. sexual reproduction. e. spawning.
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.