Module 15-16

Question 1

• are made up of a glycerol molecule and it is connected to three fatty acid molecules.
• Is called triglyceride.
• Fatty acids are organic compounds

Answer 1

Lipids

Question 2

are the polymers of fatty acids that contain a long, nonpolar hydrocarbon chain with a small polar region containing oxygen.

Answer 2

Lipids

Question 3

• only contains single bonds between neighboring carbons in the hydrocarbon chain.
• These are commonly found in animals’ meat.

Answer 3

Saturated Fatty Acids

Question 4

• Contains double bonds in the hydrocarbon chains.
• These lipids are usually plants based.

Answer 4

Unsaturated Fatty Acids

Question 5

class of lipids that are esters of fatty acids with different alcohols.

Answer 5

Simple Lipids

Question 6

• are called triacylglycerols or triglycerides
• -describes as triesters of glycerols with three long chain carboxylic acids.

Answer 6

Fats/Oils

Question 7

are esters of fatty acids with monohydroxyl alcohol (one hydroxylgroup) having high molecular weight.

Answer 7

Waxes

Question 8

are esters of fatty acids and alcohols containing additional groups such as phosphates, nitrogenous base and others.

Answer 8

Compound Lipids

Question 9

formed fatty acids, sphingosine or glycerol, and a
carbohydrate. They are occurring in all tissues on the outside surface of the plasma membrane.

Answer 9

Glycolipids

Question 10

are esters of fatty acids with glycerol containing an esterified phosphoric acid and a nitrogen base.

Answer 10

Phospholipids

Question 11

They are abundant in nerve tissue, brain, liver, kidney, pancreas and heart.

Answer 11

Phospholipids

Question 12

have fused ring which is different from fats and phospholipids. They are also hydrophobic and insoluble in water

Answer 12

Steroids

Question 13

is a common steroid which is composed of four-fused rings. It has a wax-like substance, located only in animal source foods.

Answer 13

Cholesterol

Question 14

are made up of many amino acid units linked together by amide bonds in a long chain.

Answer 14

Proteins

Question 15

IT HAS
A. Basic amino group (NH2)
B. Acidic carboxyl group (COOH)

Answer 15

Proteins

Question 16

serves as the building blocks for proteins stems. And there are 20 kinds of amino acids depending on their R-group.

Answer 16

Amino acid

Question 17

The chain of amino acids linked together with fewer
than 50 are usually called?

Answer 17

Peptides.

Question 18

when many amino acids are linked together through peptide bonds, this molecule is known as

Answer 18

Polypeptide

Question 19

yield only amino acids and no other compounds on hydrolysis.

Answer 19

Simple Proteins

Question 20

consist of polypeptide chains arrange side by side in long filaments and insoluble in water. Examples: keratin in nails and hair, collagen in muscle

Question 21

nearly circular shapes, which normally coiled into compact. They are soluble in water. Examples: hemoglobin from blood, insulin, enzyme

Answer 21

Globular Proteins

Question 22

yield other compounds in addition to amino acids on hydrolysis. It is more common than simple proteins.

Answer 22

Conjugated Proteins

Question 23

They are formed from large molecular weight proteins by the action of heat, enzymes or chemical agents, thus they have lower molecular
weights.

Answer 23

Derived Proteins

Question 24

it is the sequence of amino acids which is linear and linked together by peptide bonds. It is the most fundamental structural level.

Answer 24

Primary Structure

Question 25

in this level the **polypeptide chain can twist and fold** in different ways because **single bonds** in the polypeptide chain **allow rotation.**

Answer 25

**Secondary Structure**

Question 26

in this level the entire protein molecules coils into an overall **three dimensional shape.**

Answer 26

**Tertiary structure**

Question 27

in this level several protein molecules join together to form a **bigger cluster structure.**

Answer 27

**Quaternary Structure**