Phosphodiesterase directly functions to a. enzymatically activate the alpha subunit of the G protein b. enzymatically cleave a membrane phospholipid to form IP3 and DAG c. enzymatically inactivate cyclic GMP d. open Ca++ channels in the sarcoplasmic reticulum e. none of the above

1. The most abundant protein found in the extracellular matrix (ECM) is A. elastin B. keratin C. collagen D. myosin 2. One type of ECM component composed of both protein and carbohydrate would be A. lectins B. proteoglycans 17 C. integrins D. claudins 3. Which types of cells don't have an ECM, but rather have something else instead? A. epithelial cells B. connective tissue cells C. white blood cells D. plant cells 4. Which ECM component allows for elastic recoil, almost like a rubber band? mit A. keratin B. recoilin C. elastin D. collagen 5. Which biologists conducted the experiment that showed that the R strain of bacteria could be converted into the S strain through transformation? A. Griffith and colleagues B. Hershey and colleagues C. Avery and colleagues D. Chase and colleagues ulA ns as beitiazacio zi smonsa sit 6. The follow up to the experiments from the previous question showed that DNA was indeed the genetic material. How was this done? A. Digesting the RNA from the extract…

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5. Patients suffering from Familial Hypercholesterolemia (FH) can carry a mutation in one of several genes. Two of these genes are ApoB and PCSK9. 6 a. Diagram the normal cholesterol sensing pathway for a healthy person. This should be focused on the molecules that handle cholesterol and that regulate cholesterol production, NOT on patient symptoms. b. On your diagram indicate where a mutation in Apoß disrupts cholesterol sensing. Then write a paragraph or two explaining how cholesterol sensing is specifically disrupted in patients with an Apoß mutation. c. On your diagram indicate where a mutation in PCSK9 disrupts cholesterol sensing. Then write a paragraph or two explaining how cholesterol sensing is specifically disrupted in patients with PCSK9 mutation. A in cancers. One approach focuses on the