Ch. 2-Chemical Level of Org

Question 1

Hydrogen bonds:

Answer 1

1. A type of covalent bond
2. They’re formed when a hydrogen atom with a partial positive charge attracts the neighboring atoms with partial negative charge
3. They may be formed within one molecule or between two molecules
4. They can be formed from nitrogen atoms in ammonia (NH3) with hydrogen atoms in water molecules.
5. Create surface tension
6. Gives water molecules cohesion

Question 2

2 examples of molecules containing both polar and nonpolar covalent bonds:

Answer 2

Amphipathic molecules and glucose molecules

Question 3

Examples of molecules that are monosaccharides:

Answer 3

Galactose, fructose and glucose

Question 4

Do you need sequence of amino acids linked by covalent peptide bonds is the _______ structure of a protein.

Answer 4

Primary

Question 5

AB A+B is what type of chemical?

Answer 5

Reversible reaction

Question 6

Carbonic Acid is:

Answer 6

• A weak acid in the body
• Formed by carbon dioxide and water in the body
• HCO3- is the anion ion

Question 7

The function of Structural Proteins :

Answer 7

Forms structural framework of various parts of the body. Example: collagen in bone and other connective tissues; keratin in skin, hair, and fingernails.

Question 8

The function of Regulatory Proteins:

Answer 8

Functions as hormones that regulate various physiological processes; controls growth and development; as neurotransmitters, mediate responses of nervous system

Question 9

Function of Contractile Proteins:

Answer 9

Allow shortening of muscle cells, which produces movement. Example: myosin; actin

Question 10

Function of Immunological Proteins:

Answer 10

Aid responses that protect body against foreign substances and invading pathogens. Examples: antibodies; interleukins

Question 11

Function of transport proteins:

Answer 11

Carrie vital substances throughout body. Example: hemoglobin (transports most oxygen and some carbon dioxide in blood).

Question 12

Function of catalytic proteins:

Answer 12

Act as enzymes that regulate bio chemical reactions. Examples: salivary amylase; sucrase; ATPase