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. This is evidence that the TOLL protein is present.
B. This is evidence that the TOLL protein is not present.
C. The TOLL protein is only found in humans.
D. This is inconclusive evidence.
D. This is inconclusive evidence.
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A hydrocarbon skeleton is covalently bonded to an amino group at one end and a carboxyl group at the other end. When placed in water this molecule would function _____
A) only as an acid because of the carboxyl group B) only as a base because of the amino group C) as an acid and a base D) as neither an acid nor a base E) It is impossible to determine how it would function, based on the provided information.
Latitudes between the tropics and the Arctic Circle (in the north) and between the tropics and the Antarctic Circle (in the south) are called __________.
Fill in the blank(s) with the appropriate word(s).
It has been discovered that the genetic material is PROTEIN.
a. true b. false
People who wear contact lenses or glasses have a defect in the
A) length of the eyeball. B) iris. C) blind spot. D) cone cells. E) rod cells.