Which of the following statements correctly describes the effect a nonsense mutation would have on a gene? a) it changes an amino acid in the encoded protein. b) it alters the reading frame of the mrna. c) it introduces a premature stop codon into the mrna. d) it has no effect on the amino acid sequence of the encoded protein.

What food can provide the body with a quick source of the energy needed to carry out cell functions (a) whole grain bread (b) ground hamburger (c) vegetable oil (d) whole milk

Which blood cell spend most of their time in the lymphatic system?

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils