proteins Flashcards

1
Q

amino acids are made up of?

A

an amino group (H2N) an R group and a carboxyl (COOH)

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2
Q

non essential amino acids

A

we can make ourselves or from food

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3
Q

conditionally essential

A

healthy bodies can make

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4
Q

essential amino acids

A

bodies can not make

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5
Q

protein is what percent if the dry mass of most cells

A

50%

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6
Q

protein functions

A

defense, storage, transport, cellular communication, movement and structural support

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7
Q

enzymatic proteins function?

A

selective acceleration of chemical reactions

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8
Q

enzymatic protein example

A

digestive enzymes catalyze the hydrolysis of bonds in food molecules

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9
Q

defense proteins function

A

protection against disease

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10
Q

defense proteins example

A

antibodies inactivate and help destroy viruses and bacteria

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11
Q

storage proteins function

A

storage of amino acids

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12
Q

storage proteins example

A

casein (milk) or ovalbumin (protein of egg whites

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13
Q

transport proteins function

A

transport substances

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14
Q

transport protein examples

A

hemoglobin or cell membranes

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15
Q

hormonal proteins function

A

Coordination of an organisms activities

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16
Q

hormonal proteins, example

A

insulin and high blood sugar

17
Q

receptor proteins function

A

Response of cell to chemical stimuli

18
Q

receptor proteins examples

A

Built into the membrane of a nerve cell detects, signaling molecules released by other nerves cells

19
Q

contractile motor proteins function

20
Q

contractile and motor proteins examples

A

you dilation of cilia and flagella

21
Q

structural proteins function

22
Q

Structural, proteins example

A

hair, hordes, feathers, and other skin appendages

23
Q

Polypeptides

A

Unbranched polymers built from the same set of 20 amino acids

24
Q

protein

A

A biologically functional molecule that consist of one or more polypeptide

25
amino acids
Are monomers with carboxyl and amino groups differ in properties because of R groups
26
R groups with no oxygen or sulfur
non polar and hydrophobic
27
R groups with oxygen and sulfur
are polar and hydrophilic
28
negative charge
acidic
29
positive charge
basic
30
peptide bonds
bonds that link amino acids togehter
31
primary structure
A unique sequence of amino acids
32
secondary structure
coils in folds from the interaction of hydrogen bonds between polypeptide chains
33
Tertiary structure
determined by interactions among R groups, disulfide bridge, hydrogen, bonds, ionic bonds, hydrophobic interactions
34
quaternary structure
results from interactions between multiple polypeptide chains
35
What affects a proteins structure?
pH levels, salt, concentration, temperature, or other environmental factors
36
denaturation
the loss of a proteins native structure which causes a protein to be biologically inactive