Biochemistry Pre-Quiz

Question 1
Sugars and starches are

Carbohydrates

Protiens

Lipids

Nucleic Acids

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Question 2
Deoxyribose is a sugar used to create RNA.

True

False

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Question 3
A carbohydrates most important function is to store and provide energy for the body.

True

False

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Question 4
The most abundant type of bio-molecules are

Carbohydrates

Proteins

Lipids

Nucleic Acids

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Question 5
Glucose is an example of a

Monosaccharide

Disaccharide

Oligosaccharide

Polysaccharide

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Question 6
Hexose is

a polysaccharide

a disacchride

a six carbon sugar

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Question 7
A monosaccharide is

a simple fat.

the least complex carbohydrate.

the most complex carbohydrate.

a lipid.

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Question 8
Basic monosaccharide units are composed of which ratio of elements?

C₂H₂O

C₂H₂N

C₂H₂O₃

CH₂O

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Question 9
Glucose and fructose

are sugars with the same formula.

are both lipids without any nitrogen atoms.

are both complex fats.

carbohydrates with different formulas.

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Question 10
Fructose is associated with

the bitter taste of rhubarb.

the tart taste of lemons.

the sweet taste of fruits.

the oily taste of nuts.

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Question 11
When two monosaccharides combine together they make

a lipid.

a disaccharide.

a polysaccharide.

a fatty acid.

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Question 12
Sucrose is

a common fatty acid.

the building blocks of proteins.

a simple lipid.

the best know disaccharide.

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Question 13
Sucrose is a regular sugar.

True

False

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Question 14
Sucrose is the best known disacchride.

True

False

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Question 15
Sucrose is a combination of glucose and fructose.

True

False

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Question 16
Sucrose is the same as lactose.

True

False

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Question 17
Lactose is another disaccharide that has a glucose molecule hooked to a different monosaccharide molecule, galactose.

True

False

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Question 18
How many monosaccharides are joined together to make an oligosaccharide?

2

3-6

8-30

More than six.

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Question 19
How many monosaccharides are joined together to make a polysacchride?

2

3-6

More than six.

More than 30.

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Question 20
Starches are

lipids.

polysaccharides.

fats.

proteins.

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Question 21
Cellulose and glycogen are long chains of repeating glucose molecules.

True

False

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Question 22
Polysacchrides can be used to form structural elements, such as chitin in animals and cellulose in plants.

True

False

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Question 23
Glucose can be made from other non-carbohydrate sources, such as proteins and parts of fats through

the Krebs cycle.

gluconeogenesis.

anaerobic glycolysis.

recombination.

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Question 24
The metabolism of glucose is done by

metathesis.

mitosis.

gluconeogenesis.

glycolysis.

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Question 25
ATP is what cells use for energy.

True

False

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Question 26
Glycolysis is a means of producing energy.

True

False

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Question 27
One molecule of glucose is broken down into two molecules of pyruvate.

True

False

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Question 28
Glycolysis produces a net of two molecules of adenosine triphosphate (ATP).

True

False

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Question 29
Glycolysis can happen with or without oxygen.

True

False

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Question 30
Oxidative phosphorylation is the Krebs cycle.

True

False

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Question 31
The Krebs cycle generates

ATP, water, and carbon dioxide.

polysaccharides.

simple sugars.

RNA.

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Question 32
Completely oxidizing glucose using oxygen provides an organism with far more energy than any oxygen-deficient system.

True

False

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Question 33
Lactate is an acid and when it is produced in the muscles it creates the cramping sensation during intense exercise.

True

False

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Question 34
In anaerobic glycolysis

Glucose is converted to lactate with oxygen.

Glucose is converted to pyruvate without oxygen.

Glucose is converted to lactate without oxygen.

Lactate is converted to pyruvate with oxygen.

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Question 35
Amino acids are used to form

Nucleic acids

Carbohydrates

Proteins

Lipids

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Question 36
An amine group is

-COOH

-CH₂O

-NH₂

-C=O

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Question 37
Peptide bonds connect

simple sugars.

lipids.

monosaccharides.

amino acids.

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Question 38
Combining two amino acids using a peptide bond is called a dipeptide.

True

False

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Question 39
A group of _________ amino acids are called peptides or polypeptides.

3-6

less than 30

more than 30

more than 6

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Question 40
A group of _________ amino acids are called proteins.

3-6

less than 30

more than 30

more than 6

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Question 41
In humans there are only twenty amino acids needed to make all of the proteins necessary for life.

True

False

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Question 42
Oils, fats, and fatty acids are

Nucleic acids

Carbohydrates

Proteins

Lipids

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Question 43
-COOH is a carboxyl group and is present in all carboxylic acids.

True

False

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Question 44
-COOH is a carboxyl group and is present in all fatty acids.

True

False

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Question 45
Triglycerides are examples of

A neutral fat

A polysacchride

A protein

A nucleic acid

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Question 46
Three fatty acids generally joined to a glycerol or some other backbone structure is

A protein

A polysacchride

A neutral fat

A nucleic acid

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Question 47
Phospholipids are similar to neutral fats, but one of the three fatty acids is replaced by a simple sugar.

True

False

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Question 48
Cholesterol is

A form of protein

A form of polysacchride

A form of fat

A form of nucleic acid

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Question 49
Phospholipids are essential components of cell membranes.

True

False

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Question 50
Fats that have no double bonds between the carbon atoms of the fatty acid chain are said to be

Saturated

Monounsaturated fats

Polyunsaturated fats

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Question 51
Fats that have one double bond between the carbon atoms of the fatty acid chain are said to be

Saturated

Monounsaturated fats

Polyunsaturated fats

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Question 52
Fats that have two or more double bonds between the carbon atoms of the fatty acid chain are said to be

Saturated

Monounsaturated fats

Polyunsaturated fats

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Question 53
Which one is better for us?

Saturated fats

Polyunsaturated fats

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Question 54
Nucleic acids

store and provide energy to the cells.

store and disseminate information to the cells.

are used to provide physical structure to plants.

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Question 55
Nucleic acids are found in all living cells and viruses.

True

False

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Question 56
Most nucleic acids

are found in the nucleus of the cell.

are found in the cell membrane.

are found in the intercellular space between cells.

are found in the intercellular space between cells.

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Question 57
Nucleic acids are large molecules that have two main parts a sugar and a phosphate.

True

False

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Question 58
Adenine and thymine are base pairs for

DNA

RNA

Both DNA and RNA

Neither DNA or RNA

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Question 59
Cytosine and guanine are base pairs for

DNA

RNA

Both DNA or RNA

Neither DNA or RNA

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Question 60
Uracil and adenine are base pairs for

DNA

RNA

Both DNA and RNA

Neither DNA or RNA

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Question 61
Adenine and guanine are base pairs for

DNA

RNA

Both DNA and RNA

Neither DNA or RNA

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Question 62
In DNA deoxyribose and a phosphate alternately chain together in a sugar-phosphate-sugar-phosphate chain that make two very long structures that twist around each other.

True

False

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Question 63
In RNA deoxyribose and a phosphate alternately chain together in a sugar-phosphate-sugar-phosphate chain that make two very long structures that twist around each other.

True

False

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