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UNIT IV- PROTEINS

BIOCHEMISTRY

QuestionAnswer
1. These are polymers of amino acids. Proteins
2. are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules Proteins
3. Are the monomers that make up proteins Amino acids
4. It is the Greek word of protein which means “of first importance”. Proteios
5. What is the function of protein in the body? Building of new cells, the maintenance of existing cells and the replacement of old cells
6. Proteins have very ____ molecular masses. High
7. Hydrolysis of proteins yields _____. Amino acids
8. How many known amino acids that can be produced by the hydrolysis of protein? 20
9. A organic acid that has a amine (–NH2) group attach to a chain containing an acid group. Amino acid
10. When two amino acids combine the product is a ____. Dipeptide
11. When three amino acids combine the product is called a _____. Tripeptide
12. When amino acids join together the product is called _____. Polypeptide
13. Refers to the number and sequence of the amino acid in protein. Primary structure
14. Refers to the regular recurring arrangement of the amino acid chain Secondary Structure
15. Refers to the specific folding and bending of the coils into specific layers or fibers. Tertiary Structure
16. These are form between positively and negatively charged groups within the protein molecule Salt bridge
17. Can be form between different segments of the coil. Hydrogen bond
18. Can form between cysteine groups I different parts of the coil. Disulfide bonds
19. Can be formed in general nonpolar amino acids are folded on the “inside” of the protein, and polar amino acids are on the “outside”, where they can react with water molecules to form polar group interactions. Hydrophobic bonds
20. Occurs when two or more protein units, each with its own primary, secondary, and tertiary structure, combine to form a more complex unit. Quarternary structure
21. Transport triglycerides synthesized by the liver to the other parts of the body. Very low-density lipoproteins
22. Provide cholesterol for cellular needs Low density lipoproteins
23. Are protein s combined with nucleic acids. Nucleoproteins
24. are protein containing carbohydrate s in varying amount and are present in most organism, including animals, plants, bacteria, viruses and fungi Glycoprotein
25. Are protein containing lipids, are part of cell membranes. Lipoprotein
26. Consists of neutral lipid core of triglycerides. And cholesterol ester that is surrounded and stabilized by free cholesterol, protein, and polar lipid determine the density, size, and charge of the resulting lipoproteins. Plasmalipoprotein
27. Protein are divided into three categories namely _______ simple, conjugated, and derived.
28. on hydrolysis, _________ yields only amino acids or derivatives of amino acids. Simple protein
29. on hydrolysis, _________ yields amino acids plus some other type of compound. It consists of a simple protein combined with a nonprotein compound. Conjugated protein
30. on hydrolysis, conjugated proteinyields amino acids plus some other type of compound. It consists of a simple protein combined with a nonprotein compound. Derived Protein
31. Consist of polypeptides folded into the shape of a “ball”. These are soluble in water form colloidal dispersions and have an active function. Globular proteins
32. Consist of parallel polypeptide chains that are coiled and stretch out. They are insoluble in water. Fibrous Proteins
33. Refers to the unfolding and rearrangement of the secondary and tertiary structures of a protein without breaking the peptide bonds. Denaturation
34. Is use as a disinfectant because of its ability to coagulate the protein present in bacteria? Alcohol
35. They are very poisonous if taken internally because they coagulate and destroy protein present in the body. Salt of heavy metals
Created by: nivera00
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