Chapter 3 - Molecules of Life: Part 1

Question 1

Our food is made up of …

Answer 1

Organic molecules.

Question 2

Macromolecules are …

Answer 2

Polymers of large organic molecules made up of smaller building blocks.

Question 3

What are the Four Types of macromolecules essential to living organisms ?

Answer 3

-Carbohydrates
- Lipids
- Proteins
- Nucleic Acids

Question 4

Carbohydrates are primary _ for cells.

Answer 4

Fuel.

Question 5

Carbohydrates consist of …

Answer 5

Carbon, Hydrogen, and Oxygen.

Question 6

Carbohydrates are COMPOSED of … M

Answer 6

Monosacchrides.

Question 7

Monosaccharides are _ sugars.

Answer 7

Simple.

Question 8

Mono means …

Answer 8

One.

Question 9

C-H bonds store _ amounts of energy.

Answer 9

Large.

Question 10

Glucose provides what to the cells ?

Answer 10

Energy.

Question 11

Blood sugar is _cose, _tose, and _ctose.

Answer 11

Glucose, Fructose, and Galactose.

Question 12

Fructose provides _ for temporary storage.

Answer 12

Glycogen.

Question 13

Galactose provides _for long term energy storage.

Answer 13

Fat.

Question 14

Disaccharides are formed by…

Answer 14

the union of two sugars.

Question 15

Polysaccharides are formed by …

Answer 15

the union of multiple sugars.

Question 16

Are all Carbohydrates digestible by humans?

Answer 16

No.

Question 17

Carbohydrates serve as structural materials for …

Answer 17

animals and plants.

Question 18

Are the shell of a lobster ( the chitin) digestible ?

Answer 18

No.

Question 19

Cellulose is digestible.

Answer 19

FALSE.

Question 20

Dietary fibers are not digestible carbohydrates and help clear the …

Answer 20

digestive tract

Question 21

Lipids store …

Answer 21

Energy for a rainy day.

Question 22

Lipids have more C-H bonds than …

Answer 22

Carbohydrates.

Question 23

Lipids are _ in water because they are non-polar.

Answer 23

Soluble.

Question 24

Lipids are _ to the touch.

Answer 24

Greasy.

Question 25

Dietary fats differ in _ of saturation.

Answer 25

degrees.

Question 26

Glycerol is the hydrophilic “_” region.

Answer 26

Head.

Question 27

Fatty acids is the hydrophobic “_” region.

Answer 27

Tails.

Question 28

In Saturated fats each carbon is _ chained to two hydrogen atoms.

Answer 28

Single

Question 29

In Unsaturated fats each carbon _ bond links to carbon atoms.

Answer 29

Double.

Question 30

Trans fat is …

Answer 30

fatty acids.

Question 31

_ and _ are used to build sex hormones and membranes.

Answer 31

Cholesterol and Phospholipids.

Question 32

An important component of cell membranes in animals are …

Answer 32

Cholestrol.

Question 33

_ ( containing cholesterol ) can cause hardening of arteries.

Answer 33

Plaque.

Question 34

The MAIN component of a cell membrane is … P

Answer 34

Phospholipids.

Question 35

Regulating sexual development, maturation, and sex cell production is done by what hormone?

Answer 35

Steroid.

Question 36

Estrogen influences…

Answer 36

Memory and Mood.

Question 37

What stimulates muscle growth ?

Answer 37

Testosterone.

Question 38

Waxes are strongly hydro……

Answer 38

Hydrophobic. They repel water.

Question 39

Waxes coat surface of …

Answer 39

insects, plants, and feathers.

Question 40

Waxes have one long …

Answer 40

fatty acid chain.