Saliva contains the enzyme __________, which begins the process of starch digestion. Fill in the blank(s) with the appropriate word(s)
ANSWER: amylase
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In 1610, which scientist was imprisoned for publishing evidence that the Earth orbits the sun?
a. Aristotle b. Copernicus c. Galileo d. Darwin e. Newton
Which scenario would be a modern example of Lamarckianism?
a. A strain of houseflies resistant to insecticides emerges. b. Squirrels separated by a river are found to be unable to interbreed. c. A son is born with a portion of his right index finger missing--the same portion that was severed from his father's hand in an accident. d. A species of lizards shows changes in diet and body shape after being moved to a nearby island. e. Snails are found to have thicker shells after the introduction of a predator.
The simple plant tissues are __________,
__________, and __________. Fill in the blank(s) with the appropriate word(s).
Scientists now believe that comets falling to early Earth played a role in the evolution of life. What role did these comets play?
A) They brought CO2 and H2O. B) They brought ammonia ions (NH4). C) They generated a lot of energy when they hit Earth. D) All of the above are true.