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Life Science-Biochemical Molecules > Proteins > Flashcards

Flashcards in Proteins Deck (17)
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1

What is the molecular makeup of protein?

Carbon, Hydrogen, Oxygen, and Nitrogen

2

What other elements do they contain?

Sulfur, Phosphorus and Iron

3

How many amino acids are there? And how many are essential?

20 9

4

What forms between amino acids?

Peptide bonds

5

What are polypeptides?

Polypeptides are chains of amino acids.

6

What are two amino acids called?

Dipeptide

7

What is the MAIN importance of proteins?

Energy reserve

8

 What is the importance of proteins in terms of membranes?

Component of cell membranes

9

What is the importance of proteins in relation to DNA?

Intergral structural componet of chrmosomes.

10

What are the deficiency diseases from lack of
protein?

Marasmus and Kwashiorkor

11

What is the importance of proteins in relation to mechanical and structural functions? (4) 

  • Actin and myosin in muscle
  • Keratin in hair,skin and nails
  • Collagen in connective tissue 
  • Cartilage in bones

12

What is the importance of proteins in relation to hormones?

Regulatory function as hormones

13

What is the importance of proteins in relation to enzymes?

Controlling and catalytic functions as enzymes.

14

What is the importance of proteins in relation to our immune system?

Protection, in the form of antibodies.

15

What is the importance of proteins in relation to our circulatory system? (2)

  •  Transport oxygen and carbon dioxide around the body
  • Haemoglobin in red blood cells

16

What is the chemical test for proteins?
 

Biuret test • Positive test: purple
• Negative test: blue

17

What is the other test for proteins?

• Millon’s reagent • Positive test: brick red
precipitate
• Negative test: blue