Biochemestry

Question 1

Fibrous proteins

Answer 1

Extended and strandlike

Question 2

Globular proteins

Answer 2

Compact, spherical proteins with tertiary and quaternary structures.

Question 3

Oxygen

Answer 3

65%
Found in many molecules
Needed for cellular respiration

Question 4

Carbon

Answer 4

18.5%

found in carbs. Lipids. Proteins. Nucleic Acids.

Question 5

Hydrogen

Answer 5

9.5%
In organic compounds
Influences pH

Question 6

Nitrogen

Answer 6

3.2%

In proteins and nucleic acids.

Question 7

Calcium

Answer 7

Bones, teeth, muscle contractions,n.i.

Question 8

Phosphorus

Answer 8

Bones, teeth, DNA, RNA, ATP

Question 9

Potassium

Answer 9

Nerve impulses, muscle contractions

Question 10

Sulfur

Answer 10

Proteins

Question 11

Sodium

Answer 11

Extracellular, water balance, n.i. And m.c.

Question 12

Chlorine

Answer 12

Extracellular fluid

Question 13

Magnesium

Answer 13

Bone, imp. cofactor

Question 14

Iodine

Answer 14

Thyroid hormones

Question 15

Iron

Answer 15

Hemoglobin and some enzymes

Question 16

Carbohydrates
What do they contain?
What do they do?
Ex.

Answer 16

Contain C. O. H.
Supply a source of cellular food
Ex. Monosaccharides or simple sugars

Question 17

Lipids
What is it composed of?
Ex.

Answer 17

Composed of three fatty acids bonded to glycerol molecule

Ex. Phospholipid. Steroids. Eicosanoids.

Question 18

4 main elements in the body (what percent do they make up?)

Answer 18

Carbon 
Hydrogen 
Nitrogen 
Oxygen 
96%

Question 19

Nucleic acids
What is it?
What pairs with what?

Answer 19

Structure of DNA
Adenine goes with thymine
Cytosine goes with guanine

Question 20

Proteins

What is it composed of?

Answer 20

Macromolecules composed of combinations of 20 types of amino acids bound together with peptide bonds

Question 21

ATP

Answer 21

Usable energy molecule