Aminoacyl-tRNA synthetase is the enzyme that
A) folds tRNA molecules into their proper configuration.
B) causes tRNA molecules to bind to the aminoacyl site of a ribosome.
C) produces tRNA by reading DNA molecules.
D) adds the appropriate amino acid to an uncharged tRNA.
D) adds the appropriate amino acid to an uncharged tRNA.
Aminoacyl-tRNA synthetase is the enzyme that adds the appropriate amino acid to an uncharged tRNA.
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If you mechanically shook a mixture of phospholipids and water, what would you expect to see when you observe the solution using an electron microscope?
A) The lipids and water will have separated into two distinct layers because the lipids are partially nonpolar. B) Some lipids will have formed tiny vesicles filled with water. C) All the lipids will have formed planar bilayer membranes. D) Most lipids will have completely dissolved in solution because they are partially polar.
About 10-15% of African Americans in the US are carriers for ____, an autosomal recessive genetic disorder in which
a defective version of the hemoglobin protein is produced. a. Duchenne muscular dystrophy b. phenylketonuria c. achondroplasia d. sickle-cell anemia e. cystic fibrosis
A rapidly growing population is likely to have an age-structure diagram that is
a. bullet-shaped. b. in the shape of an inverted pyramid. c. shows significant bulges in the middle of the diagram. d. constantly changing its shape. e. in the form of a pyramid.
What is the likelihood the average college freshman has been infected with HHV-4, also known as Epstein-Barr virus (EBV)?
A) 70% B) 40% C) 16% D) 4% E) 1%