Augustus Waller invented a machine that measures
a. blood pressure when the ventricles are contracting.
b. blood pressure when the ventricles are relaxed.
c. cardiac output.
d. electrical activity of the brain.
e. electrical activity of the heart.
E
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If a meteor impact or volcanic eruption injected a lot of dust into the atmosphere and reduced the sunlight reaching Earth's surface by 70 percent for one year, which of the following marine communities most likely would be least affected?
A) deep-sea vent B) coral reef C) intertidal D) pelagic E) estuary
What happens to the extra sugar that forms during photosynthesis?
a. It is stored as proteins b. It is stored as nucleic acids. c. It is stored as starch. d. Extra sugar doesn't form during photosynthesis. e. It is stored as fatty acids.
Which of the following is a domain of life?
A. Eukaryotes B. Plants C. Animals D. Protists E. Fungi
Inserting a gene from the hepatitis B virus into yeast so that the yeast produces a viral protein is an example of
A) etiology. B) genetic engineering. C) immunology. D) microbial genetics. E) gene therapy.