Any of these events may occur in diseases transmitted by vectors except ________.
A) In biological transmission, a vector transmits pathogens by defecating while taking a blood meal.
B) In mechanical transmission, insects contact feces containing pathogenic bacteria and transfer it to food.
C) In biological transmission, vectors can spread pathogens by vomiting.
D) In biological transmission, pathogens multiply in the vector, which can transmit the pathogens by injecting saliva directly into the host.
E) In biological transmission, the vector multiplies in the human host.
Ans: E) In biological transmission, the vector multiplies in the human host.
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Traits such as weight and height that tend to vary along a continuum are typically
__________.
a. polygenic b. pleiotropic c. incomplete d. codominant
What do bryophytes lack that make them less likely to have formed fossils?
a. Chlorophyll b. Lignin c. Deep roots d. Special cells that conduct fluids
You wanted to test a single fruit fly for the presence of the TOLL protein , so you prick it with a needle coated in fungal spores. The fly dies 2 days later. Which of the following statements is TRUE?
A. The TOLL protein is only found in humans. B. This is evidence that the TOLL protein is not present. C. This is evidence that the TOLL protein is present. D. This is inconclusive evidence.
Micronuclei are stored particles of carbohydrate and lipids.
Answer the following statement true (T) or false (F)