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Biochemistry > Protein > Flashcards

Protein Flashcards

1
Q

Proteins that are Found only in animals.

A

Fibrous protein

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2
Q

Don’t serve structural functions. They can act as transporters like hemoglobin and are often enzymes.

A

Globular proteins

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3
Q

Proteins that are Generally insoluble in water.

A

Fibrous protein

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4
Q

Proteins that are usually water-soluble.

A

Globular protein

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5
Q

is a fibrous protein found in skin and bone.

A

Collagen

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6
Q

are proteins that facilitate chemical reactions under mild conditions.

A

Enzymes

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7
Q

is a transport protein for oxygen.

A

Hemoglobin

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8
Q

are proteins that fight foreign substances.

A

Antibodies

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9
Q

stores iron in the liver.

A

Ferritin

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10
Q

most fundamental level that all proteins have

A

Primary level

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11
Q

most specific level that only some proteins have

A

Quarternary level

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12
Q

is required for protein synthesis.

A

Energy

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13
Q

what remains of each amino acid is called

A

Residue

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14
Q

When two or more amino acids combine,
a molecule of water is

A

Removed

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15
Q

ultimately controls the amino acid sequence, with mRNA serving as the template.

A

DNA/deoxyribonucleic acid

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16
Q

allows for hydrogen bonding between residues.

A

Backbone

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17
Q

was one of the first proteins to have its primary structure determined.

A

Bovine insulin

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18
Q

refers to the folding of the polypeptide chain due to hydrogen bonds between peptide bonds.

A

Secondary structure

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19
Q

is a secondary structure formed by hydrogen bonding between the amino acids in a polypeptide chain.

A

a-helix

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20
Q

the protein found in hair, nails, and fur

A

Keratin

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21
Q

creates bends or “kinks” that inhibit the formation of a regular pattern of hydrogen bonds.

A

Proline

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22
Q

Strands align in the same direction

A

Parallel structure

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23
Q

Strands align in opposite directions.

A

Antiparallel structure

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24
Q

are typically four to five strands wide, but can be up to ten or more.

A

Sheets

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25
Q

also known as a hairpin bend, is the simplest of these structures.

A

B-turn

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26
Q

is a larger structure that resembles the Greek letter omega

A

Ω-loop

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27
Q

The combination of primary, secondary structures, and side chain interactions

A

Tertiary structure

28
Q

repelled by water, but attracted to each other.

A

Hydrophobic

29
Q

Attract other polar side chains through dipole-dipole forces or hydrogen bonds.

A

Polar side chains

30
Q

Nonpolar side chains tend to cluster together, avoiding water.

A

Hydrophobic interactions

31
Q

Formed by interactions between multiple polypeptide chains

A

Quarternary structure

32
Q

Separates proteins based on net charge in an electric field

A

Electrophoresis

33
Q

Separates proteins based on net charge

A

Ion exchange chromatography

34
Q

One of the characteristics of proteins or enzymes in the blood is

A

Polymorphism

35
Q

The determination of blood type in a-b-o system, first begun in 1901, is based on

A

Antigen- antibody reactions

36
Q

An antigen on the surface of red blood cells

A

Rh factor

37
Q

Linear sequence of amino acids

A

Primary structure

38
Q

Screw-like / spiral structure

A

a-helix

39
Q

Combination of secondary structure

A

Tertiary structure

40
Q

Most of the proteins have this type of structure

A

Tertiary structure

41
Q

Composed of tertiary structure

A

Quaternary structure

42
Q

Determines the 3 dimensional configuration and properties

A

Primary structure

43
Q

Primary structure starts at the

A

N-terminal amino acid

44
Q

Primary structure stops or ends at the

A

C-terminal amino acids

45
Q

It limits the rotation of proteins

A

Peptide bond

46
Q

It gives the structure stability

A

Peptide bond

47
Q

Results from interactions between peptide bonds and derived from primary structure

A

Secondary structure

48
Q

Type of B-pleated sheet that the direction of the carboxyl end is in the same direction

A

Parallel beta pleated sheet

49
Q

The bond that produces the secondary structure

A

Hydrogen bond

50
Q

Typically 4-5 strands wide

A

B-pleated sheet

51
Q

Results from interactions between side chains

A

Tertiary structure

52
Q

The overall 3D conformation

A

Tertiary structure

53
Q

Results from interactions between subunits (tertiary structure)

A

Quaternary structure

54
Q

Primary oxygen carrying protein

A

Hemoglobin

55
Q

Migration of ions in an electrical fields

A

Electrophoresis

56
Q

Prevents diffusion of proteins out of the gel

A

Fixation

57
Q

Stains for lipids

A
  • fat red 7b
  • oil red O
  • Sudan black B
58
Q

Stain for serum proteins in general

A
  • amido black
  • coomassie brilliant blue G-250
  • coomassie brilliant blue R-250
  • ponceau S
59
Q

Stains for isoenzymes

A

Nitrotetrazolium blue

60
Q

Stains for DNA fragments

A

Ethidium bromide

61
Q

Stain for CSF proteins

A

Silver nitrate

62
Q

How many agarose film can a 100ml stain solution stain?

A

387 cm^2 / 60 in^2

63
Q

The term if leaching occurs

A

Faulty

64
Q

How many acetic acid is involved in washing?

A

5% acetic acid

65
Q

Measures absorbance of each fraction

A

Photometric optical system

Biochemistry (6 decks)

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