Saturated triglycerides are bad because they raise levels of cholesterol in

Saturated triglycerides are bad because they raise

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Saturated triglycerides are bad because they raise levels of cholesterol in your blood, which clogs your arteries over time, increasing your risk of having a heart attack or stroke. 12. What is the major difference between polypeptide and protein? A peptide is two or more amino acids joined together by peptide bonds; a polypeptide is a chain of many amino acids; and a protein contains one or more polypeptides. Therefore, proteins are long chains of amino acids held together by peptide bonds. 13. Explain: protein functions are specific and saturable. Each protein goes through at least 3 levels of folding: Primary: Straight chain of amino acids connected by peptide bonds Secondary: H bonding leads to alpha helix and beta sheets Tertiary: 3D conformation, most proteins are functional Quaternary:: Some proteins require multiple tertiary units to come together 14. How do enzymes function? Enzymes are biological molecules (typically proteins) that significantly speed up the rate of virtually all of the chemical reactions that take place within cells. 15. What is denaturation? Denaturation: Tertiary to Primary: Extreme temperature, pH etc, renders proteins non functional. 16. What is the cellular significance of ATP? ATP (Adenosine triphosphate) ATP is a nucleotide that performs many essential roles in the cell. It is the major energy currency of the cell, providing the energy for most of the energy-consuming activities of the cell. Chapter 3 Guided Questions 1. Explain: Plasma membrane is fluid and mosaic. Fluid Mosaic Model : Fluid: Membrane is not rigid like concrete, there is a degree of fluidity which can be regulated by amounts of cholesterol Mosaic: Membrane proteins (Integral and Peripheral) make membrane look tiled. 2. Compare and contrast integral and peripheral membrane proteins.
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  • Spring '12
  • cynthiasloan

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