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Exam_Intro to Biochem-Carbs-Lipids

Total questions: 70

Worksheet time: 23mins

Name
Class
Date
1.
Which of the following compounds is not organic?
a)
CH4
b)
CO
c)
C2H2
d)
CCl4
2.
Which molecular chemical bond found commonly in organic compounds?
a)
Hydrogen Bond
b)
Ionic Bond
c)
Van Der Waals Force 
d)
Covalent Bond
3.
What are the Aliphatic Hydrocarbons?
a)
Open chained carbon hydrogen organic compounds
b)
Closed chained carbon hydrogen organic compounds
c)
Straight chained carbon hydrogen and some other elements organic compounds
d)
Closed chained carbon hydrogen and some other elements organic compounds
4.
What is producing the derivatives of hydrocarbons?
a)
Halogens added to CH chain
b)
Some non-metals added to CH chain
c)
Functional groups added to CH chain
d)
Branches added to CH chain
5.
Which type of formulas represents only combination ratio of the constituent atoms?
a)
Structural Formula
b)
Empirical Formula
c)
Molecular Formula
d)
Condense Formula
6.
How many chiral center is found in C2H5CH(OH)CH2OH?
a)
1
b)
2
c)
3
d)
4
7.

Can this compound can form optical isomers?

a)

No

b)

yes

c)

depends on whether it wants to or not

8.

The optical isomer of this compound is

a)
b)
c)
9.

Optical isomers

a)

reflect polarised light in opposite directions

b)

rotate polarised light in opposite directions

c)

reflect plane polarised light in opposite directions

d)

rotate plane polarised light in opposite directions

10.

What are enantiomers and optical isomers?

a)

Enantiomers are stereoisomers that are mirror images of each other and cannot be superimposed. Optical isomers are a type of enantiomers that rotate the plane of polarized light in opposite directions.

b)

Enantiomers are stereoisomers that have different chemical properties. Optical isomers are a type of enantiomers that do not affect the plane of polarized light.

c)

Enantiomers are stereoisomers that can be superimposed. Optical isomers are a type of enantiomers that rotate the plane of polarized light in the same direction.

d)

Enantiomers are stereoisomers that are identical to each other. Optical isomers are a type of enantiomers that do not rotate the plane of polarized light.

11.

Does this molecule exhibit optical isomerism?

a)

Yes

b)

No

12.

Check all the correct sugar units in Disaccharides

a)

Sucrose: Fructose + Fructose

b)

Maltose: Glucose + Glucose

c)

Sucrose: Fructose + Glucose

d)

Lactose: Galactose + Glucose

13.

Also known as table sugar

a)

Fructose

b)

Lactose

c)

Sucrose

d)

Maltose

14.

Storage form of glucose in the body

a)

Fructose

b)

Maltose

c)

Lactose

d)

Glycogen

15.

CHO digestion starts in the mouth through (a)   ( what enzyme?)

16.

Hormone produced from alpha cells of the Islets of Langerhans in the pancreas.

a)

Insulin

b)

Glucagon

c)

Incretins

d)

Thyroxine

17.

Fasting blood sugar sample should be obtained after how many hours of fasting?

a)

9 - 10 hours

b)

10 to 12 hours

c)

5 - 10 hours

d)

8 - 10 hours

18.

Test for fructose that uses hot HCl and resorcinol for reagent with a positive result of red within 30 seconds.

a)

Folin Wu

b)

Selivanoff's Test

c)

Hexokinase

d)

Bial's Test

19.
Carbohydrates are comprised of Carbon, Hydrogen, Oxygen, and Nitrogen
a)
True
b)
False
20.
A single unit of sugar is referred to as:
a)
Monosaccharide
b)
Monocarbohydrate
c)
Mononutrient
d)
Monopolymer
21.
Sugars all end with what three letter ending?
a)
-ote
b)
-ate
c)
-ase
d)
-ose
22.
What type of carbohydrate is this?
a)
polysaccharide
b)
disaccharide
c)
monosaccharide
d)
it isn't a carbohydrate
23.
The scientific name for table sugar is ___
a)
lactose
b)
sucrose
c)
galactose
d)
glucose
24.
What type of carbohydrate is this?
a)
polysaccharide
b)
disaccharide
c)
monosaccharide
d)
it isn't a carbohydrate
25.
What is not a type of carbohydrate?
a)
Fat
b)
Fiber
c)
Starch
d)
Sugar
26.
Important to the structural integrity of plant cells, this is the single most popular polysaccharide in the world.
a)
Starch
b)
Glycogen
c)
Cellulose
d)
Chitin
27.

What is the monomer of carbohydrates

a)

disaccharides

b)

monosaccharides

c)

amino acids

d)

fatty acids

28.

Which of the following is NOT a monosaccharide?

a)

starch

b)

fructose

c)

glucose

d)

galactose

29.

Lactose is composed of

a)

glucose + fructose

b)

glucose + glucose

c)

glucose + sucrose

d)

glucose + galactose

30.

What is the polysaccharide used by animals to store glucose?

a)

glycogen

b)

fructose

c)

starch

d)

cellulose

31.

Which monosaccharide is the sweetest?

a)

glucose

b)

fructose

c)

galactose

d)

sucrose

32.

Which polysaccharide is used by plants to make their cell wall?

a)

starch

b)

glycogen

c)

cellulose

d)

chitin

33.

Which polysaccharide makes up the exoskeleton of insects?

a)

cellulose

b)

starch

c)

chitin

d)

glycogen

34.

What two monosaccharides make up maltose?

a)

glucose + galactose

b)

glucose + glucose

c)

glucose + fructose

d)

glucose + glycogen

35.
What happens if you eat more carbohydrates then your body needs?
a)
becomes DNA 
b)
turns to fat 
c)
creates extra energy 
d)
becomes waste
36.

What is the main role of carbohydrates in the body?

a)

Is the main source of energy for the body

b)

Helps to build and repair body tissue

c)

Provide warmth and cushioning to the body's organs

d)

Helps to transport vitamins through the body

e)

All of the above are roles of carbohydrates in the body

37.

How does the body use carbohydrates?

a)

The body breaks it down and converts it into glucose which your body uses as energy

b)

The body coverts it to protein to use when needed

c)

The body breaks it down and uses it to build and repair body tissue

d)

The body uses it to help transport vitamins and minerals throughout the body

e)

None of the above are true about how the body uses carbohydrates

38.

Which of the following is NOT a Carbohydrate?

a)
b)
c)
d)
39.

What are the building blocks of lipids?

a)

Monosaccharides

b)

Amino Acids

c)

Fatty Acids

d)

Nucleotides

40.

What is the common name for lipids?

a)

fats

b)

oils

c)

waxes

d)

lubes

41.

One of the biological functions of lipids is it enhances signaling in the body. What body systems is responsible for sending messages and signals all throughout the body?

a)

Circulatory System

b)

Muscular System

c)

Nervous System

d)

Integumentary System

42.

Which part of the cell produce proteins?

a)

mitochondria

b)

ribosome

c)

nucleus

d)

vacuole

43.

Which of the following is a source of saturated fat?

a)
b)
c)
d)
44.

Which of the following is a source of unsaturated fat?

a)
b)
c)
d)
45.

Which among the following is NOT rich in Omega 3 -Fatty Acids?

a)
b)
c)
d)
46.

It is a type of lipid that makes the leaves shiny and water -resistant due to its hydrophobic nature.

a)

Steroid

b)

Wax

c)

Phospholipid

d)

Cortisol

47.

What type of lipid makes up the plasma membrane of the cell?

a)

Steroid

b)

Wax

c)

Phospholipid

d)

Cortisol

48.

This are fatty deposits/ build up in your arteries that causes atherosclerosis. These deposits are made up of cholesterol, fatty substances, cellular waste products, calcium and fibrin (a clotting material in the blood). As it builds up, the wall of the blood vessel thickens.

a)

Flake

b)

Plaque

c)

Cavity

d)

Lump

49.
What are soaps made of?
a)
bubbles
b)
carbohydrates
c)
fats & oils
d)
tide
50.
What do soaps and detergents work as?
a)
They don’t do it.
b)
They are surfactants that wash away dirt and grease.
c)
They stick to the surface of clothes and don’t cease off.
d)
Detergents only clean clothes, but soaps clean everything.
51.
What are detergents made of?
a)
bubbles
b)
dirt
c)
fats
d)
synthetic chemicals
52.
What is the process of making soap?
a)
communication
b)
freezing fats and oils
c)
saponification
d)
mixing together random ingredients
53.
What is the scientific term for “water-loving”?
a)
hydraulic
b)
hydrophilic
c)
hydrophobic
d)
hydroxide
54.
What is the charge of the “water-loving” end of the soap molecule?
a)
negative
b)
either positive or negative
c)
positive
d)
neither positive nor negative
55.
What is the scientific term for “water-hating”?
a)
hydraulic
b)
hydrophilic
c)
hydrophobic
d)
hydroxide
56.
What are the two compositions of hard water? Calcium and __________ salts.
a)
magnesium
b)
potassium
c)
sodium
d)
zinc
57.
What is the type of water that produces the greatest lather of bubbles?
a)
any type
b)
hard
c)
not so hard
d)
soft
58.
What soaps and detergents are easily broken down by bacteria in the environment to form harmless substances?
a)
biodegradable
b)
environmentally harmful
c)
environmentally harmful
d)
non-biodegradable
59.
What is the additive in many soaps and detergents that greatly harm the environment?
a)
perfumes
b)
phosphates
c)
salts
d)
sulfates
60.
When phosphates from cleaning products reach our waterways, they encourage the rapid growth of algae. This in turn extracts too much oxygen from the water and will suffocate the fish. What is this harmful process called?
a)
beautification
b)
hydrolyzation
c)
eutrophication
d)
phosphatisation
61.
When is a detergent more useful for cleaning than soap? In _____________.
a)
removing grease
b)
cleaning in hard water
c)
emulsifying oil droplets
d)
none of the above
62.
Which of the following substances should bleach only be mixed with?
a)
acid
b)
detergent
c)
soap
d)
water
63.
Hard water does not wash clothes well. Why? It is because _____________.
a)
the salts react with the soap to form a grey scum instead of attacking to the dirt particles
b)
the salts speed up the cleaning action and had water contains insufficient salts to do this
c)
the water is hard to touch, and it is unpleasant for people to touch the water when washing clothes
d)
none of these
64.

The final end product is

a)

alcholol

b)

sterol

c)

triacylglycerides

65.

Triglycerides are lipids consisting of

a)

three glycerol + one fatty acid

b)

one glycerol +one fatty acid

c)

one glycerol + three fatty acid

66.

The term "Disaccharides" means

a)

sugar that contains one glucose

b)

Sugar that contains two glucose

c)

Sugar that contains more than two glucose.

67.

Fatty acids is the building blocks of (a)  

68.

What Biological Molecules is responsible for muscle formation?

a)

Carbohydrates

b)

Lipids

c)

Protein

d)

Nucleic Acids

69.

Which of the following is NOT correct about Unsaturated Fatty Acids?

a)

Unsaturated fatty acids contains double bond

b)

The Tail of unsaturated fatty acids is not straight.

c)

Unsaturated fatty acids are solid at room temperature.

d)

Unsaturated fatty acids are good fats such as vegetable oil.

70.

How many different amino acids do exist?

a)

19

b)

20

c)

21

d)

22

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