The extreme thermophilic archaean Nanoarchaeum
a. lives near hydrothermal vents.
b. can live in temperatures above 230°F.
c. is among the smallest known cells.
d. is a parasite.
e. is all of these.
Answer: d
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Enzymes increase the rate of a reaction but do not alter equilibrium constants.
Answer the following statement true (T) or false (F)
Prion diseases occur when _____
1.a mutation changes one amino acid in a protein, causing it to fold abnormally 2.abnormally folded proteins enter the body 3.bacterial infections trigger abnormal protein folding 4.1 and 2 only 5.1, 2 and 3
The RNA and proteins required for the production of the ribosomes of a cell are produced within the ________, in the nucleus
Fill in the blank(s) with correct word
The base content of a sample of nucleic acid is as follows: A = 31%, G = 31%, T = 19%, C = 19%. What conclusion should be drawn from this information?
A) This nucleic acid is double-stranded DNA. B) The strands in this molecule are parallel rather than antiparallel. C) The purine/pyrimidine ratio in this molecule fits Chargaff's data. D) This nucleic acid is made of RNA. E) This nucleic acid is single-stranded DNA.