Proteins

1. 1Categories into which many of the amino acids found in cell proteins fit are:

   1. AAcidic AAs
   2. BBasic AAs
   3. CAAs with hydrophilic and-phobic properties
   4. DAlkaline AAs
   5. ECommon AAs
2. 2The primary structure of a protein is the sequence of AA residues attached by peptide linkages.

   1. AVerdadeiro
   2. BFalso
3. 3The secondary structure of a protein develops when parts of the polypeptide chain take up a particular shape, immediately after formation at the ribosome.

   1. AVerdadeiro
   2. BFalso
4. 4The most common shapes are produced by either folding to produce an alpha helix or coiling into beta sheets. These shapes are permanent, held in place by hydrogen bonds.

   1. AVerdadeiro
   2. BFalso
5. 5The tertiary structure of a protein arises when two or more proteins become held together, forming a complex biologically active molecule.

   1. AVerdadeiro
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6. 6The quaternary structure of a protein is the precise, compact structure unique to that protein which arises when the molecule is further folded and held in a particular complex shape.

   1. AVerdadeiro
   2. BFalso
7. 7Collagen forms a triple helix structure and is an example of a fibrous protein as is keratin.

   1. AVerdadeiro
   2. BFalso
8. 8Proteins that take up a more spherical structure are called globular proteins and highly insoluble in water e.g. insulin and catalase.

   1. AVerdadeiro
   2. BFalso
9. 9Amino acids with non-polar R groups have hydrophobic properties and amino acids with polar R groups have hydrophilic properties.

   1. AVerdadeiro
   2. BFalso
10. 10Highlight the roles and types of proteins that match.

    1. AStructural proteins: collagen, keratin
    2. Benzymes: catalase
    3. Cmuscles/movement proteins: myosin
    4. Dtransport proteins: haemoglobin
    5. Edefence against disease proteins: antibodies (immunoglobulins)
    6. Fprotein of membranes: pumps and receptors
    7. Gstructural proteins: myosin

Descrição

IBD Biology (Unit 8 : Nucleic Acids & Proteins) Quiz sobre Proteins, criado por cloud.berry em 07-05-2014.

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cloud.berry

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biologyunit 8 : nucleic acids & proteinsibd

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