A prion is a(n)
A) very small virus.
B) a virus built only of protein.
C) infectious protein.
D) a subatomic particle, along with a neutron and an electron.
C) infectious protein.
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Explain why only anaerobic bacteria inhabited Earth for the first two billion years of its existence
What will be an ideal response?
The mitotic spindle is responsible for organizing and sorting the ________ during cell division.
Fill in the blank(s) with the appropriate word(s).
A microorganism grows in the lab on medium containing mineral salts but no organic compounds. The organism is likely to be a(n)
A) heterotroph. B) autotroph. C) chemotroph. D) chemoheterotroph. E) The answer cannot be determined from the information provided.
The most common form of carbon atom has 6 protons, 6 electrons, and 6 neutrons; which combination of subatomic particles would represent a different isotope of carbon?
A) 8 protons, 6 electrons, 6 neutrons B) 6 protons, 8 electrons, 6 neutrons C) 8 protons, 8 electrons, 8 neutrons D) 6 protons, 6 electrons, 8 neutrons E) 5 protons, 6 electrons, 6 neutrons