According to the convention for properly writing Latin binomials, the scientific name for modern human beings
should be written as ____.
a. Homo sapiens
b. Homo Sapiens
c. Homo sapiens
d. homo sapiens
e. h. sapiens
ANSWER: a
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Because tropical plants have very high species diversity, they also have very low population ____
Fill in the blank with the appropriate word.
If a forested area surrounding a stream is cleared of trees, what has been found to happen to the stream?
A. export of nutrients from the soil B. greater rates of soil and rock weathering C. increased run-off of water from the soil to the stream D. greater rates of chemical leaching from the soil to the water E. All of the choices are correct.
The arrows in the diagram below are pointing
to
a. the esophagus and small intestine. b. the trachea and large intestine. c. the sphincters at the top and bottom of the stomach. d. the esophagus and pancreas. e. the stomach
What conclusion was associated with mutant strain III in the accompanying figure?
a. It contained all the enzymes needed for normal metabolism.
b. It was missing all the enzymes for metabolism of amino acids.
c. It was missing the enzyme that catalyzes the conversion of citrulline to arginine.
d. It was missing the enzyme that catalyzes the conversion of ornithine to citrulline.
e. It was missing the first enzyme in the arginine metabolic pathway.