1. A portion of a specific DNA molecule consists of the following sequence of nucleotide triplets. TAC GGA CTT GGG TCC
The DNA sequence codes for the following short polypeptide.
methionine -- leucine -- glutamic acid -- proline -- arginine
Describe the steps in the synthesis of this polypeptide. What would be the effect of a deletion or an addition in
one of the DNA nucleotides? What would be the effect of a substitution in one of the nucleotides?

Which of the following statements is accurate about evolution? question 10 options: natural selection only eliminates odd individuals. evolution means that a population never has changes in its genetic frequencies. mutations are always harmful. evolution means that a population undergoes changes in its gene frequencies over time.

Which of the following molecules could pass through the plasma membrane by simple diffusion? a. na+ ions b. glucose c. amino acids d. carbon dioxide

Question 1 which of the following allows cells to take in fluids? a. phagocytosis b. pinocytosis c. exocytosis d. receptor-mediated endocytosis question 2 molecules move along their concentration gradient (from areas of high concentration to low concentration) using active transport mechanisms. a. true b. false question 3 which of the following powers active transport (ie. provides the energy for)? a. glucose b. transport proteins c. atp d. phospholipids question 4 what type of lipid is a major component of the plasma membrane? a. cholesterol b. phosopholipids c. proteins d. triglycerides