Bio D103 (Cell) - Final Review: Lecture Clicker Questions & Answers

E. Ability to have a general effect on cellular signaling machinery - ANSWER Which of the following is NOT a key property of an effective signaling molecule? A. Ability to be synthesized rapidly B. Ability to be degraded rapidly C. Ability to be stored, released, and recovered D. Ability to be transported from the site of synthesis to a site of action E. Ability to have a general effect on cellular signaling machinery B. Different types of cells can have different signaling machinery components - ANSWER Which best explains why different types of cells might respond to the same extra-cellular signaling molecule in a different manner? A. Many different types of cells vary in the length of their cell cycle B. Different types of cells can have different signaling machinery components C. The core-signaling pathway is similar in all cell types D. Different cell types bind extra-cellular signaling molecules with similar efficiencies E. Many cell types have unique shapes E. Albumin, an abundant protein found in serum - ANSWER Which of the following is a relatively poor signaling molecule? A. Light B. Nitric Oxide, a gas C. Norepinephrine (noradrenaline) D. Lipopolysaccharide (e.g. part of bacterial cell wall) E. Albumin, an abundant protein found in serum E. Use of scaffolding proteins to decrease the local concentration of a protein - ANSWER Which of the following is not a generally conserved principle in signal transduction? A. Use of similar functional domains in a wide range of proteins B. Regulation of specificity or affinity of molecular interactions by changes in phosphorylation