Chapter 4-Protein Flashcards

1
Q

Polypeptides consist of______ linked by a _____

A

-Amino Acids, Peptide bond

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2
Q

The peptide bond is also called an _________

A

-Amide bond

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3
Q

Each amino acid in a protein is called _______

A

-Residue

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4
Q

Which end of the polypeptide chain is taken as the beginning of the chain

A

-The Amino terminal end

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5
Q

Which end of the polypeptide chain is taken as the end of the chain

A

-The carboxyl terminal end

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6
Q

Disulfide bonds form by the oxidation of two _______

A

-Cystines

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7
Q

Secondary Structure is the ___________structure formed by __________between ________and ___ groups of amino acids

A

-3D,Hydrogen bonds peptide NH,CO

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8
Q

Each turn of the Alpha Helix is made of ___amino acids

A

-3.6

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9
Q

What is the Alpha Helix stabilized by ?

A

-Intrachain of Hydrogen Bonds

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10
Q

What is the Beta Sheets stabilized by ?

A

-Hydrogen bonding between polypeptide strands

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11
Q

Beta Sheets are formed by ________ beta strands

A

-Adjacent

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12
Q

What type of bonds link the strands in Beta sheets?

A

-Hydrogen Bonds

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13
Q

The strands of a Beta sheet may be, ______,________,or______

A

parallel ,antiparallel ,mixed

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14
Q

Fibrous Proteins provide _________ for cells and tissues

A

-Structural Support

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15
Q

what type of protein is a collagen?

A

Structural Protein

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16
Q

What are the helices in the collagen supported by?

A

Steric repulsion of the pyrrolidine rings of proline

17
Q

How do they three intertwined chains in collagen interact with each other

A

Hydrogen Bonds

18
Q

Tertiary Structure refers to the _____arrangement of _________ that are ________in the primary structure and to the pattern of ________bond formation

A

Spatial ,Amino Acids, far apart, disulfide

19
Q

Tertiary structure is a result of?

A

Interactions between R groups of the peptide chain

20
Q

The interior of globular proteins consists mainly of ________

A

Hydrophobic Amino Acids

21
Q

The exterior of globular proteins consists of _________and________

A

Charged , Polar Amino Acids

22
Q

What are Quaternary Structures?

A

Many polypeptide chains that come together