Lipids

Question 1

The group of compounds called _____ is made up of substances with widely different ______ and _____

Answer 1

Lipid, composition, structures

Question 2

Lipids are defined in term of a _____ or ____

Answer 2

Physical property, solubility

Question 3

Lipids are biological molecules that are _____ in water but soluble in ____ solvents

Answer 3

Insoluble, nonpolar

Question 4

Lipids are the waxy greasy or oily compounds found in _____ and ____

Answer 4

Animals, plants

Question 5

Lipids ____ water, a useful characteristic of protective wax coating found on some plants

Answer 5

Repel

Question 6

_____ and _____ are energy rich and have relatively low densities

Answer 6

Fats, oil

Question 7

Other lipids are used as structural components especially in the formation of _____

Answer 7

Cellular membranes

Question 8

What are the two main classes of lipids

Answer 8

*Saponifiable lipids
*Nonsaponifiable lipids

Question 9

Refers to the process in which esters are hydrolyzed under basic condition

Answer 9

Saponification

Question 10

What are the esters that belongs to first class

Answer 10

1.Triglycerides
2. Waxes
3. Phospholipids
4. Sphinoglolipids

Question 11

Are not esters and cannot be hydrolyzed

Answer 11

Nonsaponifiable lipids

Question 12

Biological compound that is soluble only in nonpolar solvents

Answer 12

Lipid

Question 13

An ester containing lipid with just two types of components an alcohol and one or more fatty acids

Answer 13

Simple lipid

Question 14

An ester containing lipid with more than two types of components an alcohol fatty acid plus others

Answer 14

Complex Lipid

Question 15

A spherical cluster of molecules in which the polar portions of the molecule are on the surface and the nonpolar portions are located in the interior

Answer 15

Micelle

Question 16

A fatty acid needed by the body but not synthesized within the body

Answer 16

Essential fatty acids

Question 17

A triester of glycerol in which all three alcohol groups are esterified

Answer 17

Triglyceride or triacylglycerol

Question 18

A triglyceride that is solid at room temperature

Answer 18

Fat

Question 19

A triglyceride that is liquid at room temperature

Answer 19

Oil

Question 20

Assault of fatty acid often used as a cleaning agent

Answer 20

Soap

Question 21

An ester of a long chain fatty acid and a long chain alcohol

Answer 21

Wax

Question 22

A complex lipid containing glycerol fatty acid phosphoric acid and an amino alcohol component

Answer 22

Phosphoglyceride/Phospholipid

Question 23

A phosphorus containing lipid

Answer 23

Phospholipid

Question 24

A phospoglyceride containing choline

Answer 24

Lecithin

Question 25

A phosphoglyceride containing ethanolamine or serene

Answer 25

Cephalin

Question 26

A complex lipid containing the amino alcohol sphingsine

Answer 26

Sphingolipid

Question 27

A complex lipid containing sphingosine, a fatty acid and a carbohydrate

Answer 27

Glycolipid

Question 28

A simple unicellular organism that contains no nucleus and no membrane enclosed organelles

Answer 28

Prokaryotic cell

Question 29

A cell containing membrane and closed organelles particularly a nucleus

Answer 29

Eukaryotic cell

Question 30

A specialized structure within a cell that performs a specific function

Answer 30

Organelle

Question 31

A model of membrane structure in which proteins are embedded in a flexible lipid bilayer

Answer 31

Fluid mosaic model

Question 32

A structure found in membranes consisting of two sheets of lipid molecules arranged so that the hydrophobic portions are facing each other

Answer 32

Lipid bilayer

Question 33

A compound containing four rings fused in a particular pattern

Answer 33

Steroid

Question 34

A chemical messenger secreted by specific glands and carried by the blood to a target tissue, where it triggers a particular response

Answer 34

Hormones