Ashort segment of an mrna molecule is shown below. the polypeptide it codes for is also shown: 5′-auggugcugaag-3′: methionine-valine-leucine-lysine assume that a mutation in the dna occurs so that the fourth base (counting from the 5′ end) of the messenger rna now reads a rather than g. what sequence of amino acids will the mrna now code for? (you do not need a copy of the genetic code to answer the question.)

Are the earth's ocean floor and continents the same age geologically? why or why not?

If the dimensions of a cube-shaped cell with a length,height, and width of 1 micrometer were to double, what would be the cell's new ratio of surface area to volume? a.3 to 1 b.4 to 3 c.1 to 2 d1 to 6

Imagine a self-reactive t cell that has not undergone clonal deletion in the thymus (that is to say, it has escaped central tolerance). if it encounters self antigen in the absence of an infection or inflammation, what will happen to this self-reactive t cell? (select two answers) (a) the t cell undergoes clonal expansion. (b) the t cell gains effector functions. (c) the t cell undergoes apoptosis. (d) the t cell becomes activated. (e) the t cell becomes anergic.