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- 1.Globular proteins fold up in compact, spherical structures that have uneven surfaces. They tend to form multi-subunit complexes, which also have a rounded shape. Fibrous proteins, on the other hand, span relative large distances within the cell and in the extracellular space. Which of the proteins below are fibrous proteins? a. collagen, keratin b. tubulin and actin monomers c. elastase, pepsin d. hemoglobin and myoglobin 2. Which of the following statements is correct regarding oxidoreductase enzymes? a. NADH + H+/NAD+ are involved in catabolism and NADPH + H+/NADP+ participate in anabolism. b. The oxidation of the reduced member of a redox pair is associated to a ΔΔG < 0. c. The reduction of the oxidized member of a redox pair is associated to a ΔΔG > 0 d. All of the above e. None of the above 3.Which of the following statements is incorrect? a. We only need to consume vitamins in small amounts b. Vitamins are precursors to…Mark the cells functions in the smooth ER (Choose one or more)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…
- 6. Why is Low Density Lipoprotein (LDL) considered “bad” cholesterol? A. Deliver fats made in liver to cells B. Remove cholesterol from the body and deliver to liver C.Carry digested fat through lymph to bloodstream D. Deposit cholesterol in walls of arteries 7. Which one of the following is/are a function (s) of cholesterol? A. Part of the cell plasma membrane B. Precursor for vitamin D synthesis C. Precursor for sex hormones D. All of the above 8. Which one of the following is /are types of lipids found in food and in your body? A. Sterols B. Phospholipids C. Triglycerides D. All of the above 9. True / False: Atherosclerosis is the ONLY risk factor associated with heart disease A. True B. False 10. Which one of the following carry digested fat through lymph into blood stream? A. Low density lipoprotein (LDL) B. High density lipoprotein (HDL) C. Chylomicrons D. Very Low Density lipoprotein (VLDL1. What is the body's energy currency? a. Adenosine triphosphate b. Calcium c. Amino acids d. Triglycerides3. With suitable examples, compare the structural and functional differences between a fibrous and globular protein. 4. A person suffers from a skin condition and loss of muscle. A doctor suspects the patient has protein deficiency. Justify why the doctor thinks so.
- 1. Which one of the following element (s) is / are contained in a protein (amino acid)? A. carbon B. hydrogen C. oxygen D. nitrogen E. all of the above 2. Amino acids that make up a protein are connected by a / an _________ bond. A. hydrogen B. ionic C. peptide D. covalent 3. True / False: Essential amino acids cannot be made by the body and thus obtained from the diet A. True B. False9. You are walking down the “tough streets” of New Jersey, and suddenly you feel the need to run away from someone who is accosting you! Your muscles keep a form of energy stored just for these emergencies. What macromolecule stores energy in the muscles? * A. Glucose B. Galactose C. Starch D. GlycogenWhich of the following sentences regards ECM in cartilages is NOT correct? ECM does not contain * A. hyaluronan (is a linear, non-sulfated polysaccharide that provides compression strength, lubrication and hydration) B. chondroitin sulfate is a glycosaminoglycan that is bound to the core protein, forming proteoglycan C. link and core proteins, and multi-adhesive glycoprotein chondronectin D. The high content of bound water allows cartilage to serve as a shock absorber, an important functional role E. dense meshwork of thin type IV collagen fibrils None choices C, D, E
- 12. A protein whose structure is altered to the point that its activity is destroyed is said tobe-----------------------------.4. Molecules of what substance are given off when glycerol and fatty acids are joined?5. The splitting of a triglyceride (fat) into glycerol and fatty acids involves the addition of the same molecule you removed during dehydration synthesis. This process is called:1. Effects of amino acid composition and sequence to protein folding