Microorganisms that live in severe habitats, such as very hot, acidic or salty environments, are called
A. thermophiles.
B. barophiles.
C. extremophiles.
D. halophiles.
E. psychrophiles.
Answer: C
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When an incorrect base is added during DNA replication, what should happen?
a. DNA replication stops and starts over from the beginning. b. The incorrect bases are removed and replaced by the correct bases and replication continues. c. RNA polymerase catches the error and signals DNA polymerase to correct the issue. d. The incorrect bases are left in because eukaryotes do not have a way to correct errors.
The processes of chemical cycling would be studied mainly by ________
A) an environmentalist B) a community ecologist C) a population ecologist D) an ecosystem ecologist
Which of the following is true about spongiform encephalopathies?
A) The disease is tied to a normal cellular prion protein (PrPC) that is found mostly on the surface of neurons. B) Spongiform encephalopathies occur in a wide variety of mammals, but the infectious prions are species specific and do not cause disease in other species. C) Abnormal prions clump together and kill the affected neurons, which accounts for the spongelike appearance of brain tissue found in TSE autopsies. D) When the normal prion protein encounters an abnormally shaped version of itself, PrPSC, the normal prion's shape is changed and it becomes an infectious PrPSC. E) Spontaneous cases of Creuztfeldt-Jakob disease may be caused by mutations during cell division in neuronal stem cells.
Which is false about school age 6-12 years sleep?
What will be an ideal response?