WorksheetsBiological Molecules
Total questions: 41
Worksheet time: 14mins
Which of the following is NOT one of the four main biological molecules?
Carbohydrates
Nucleic Acids
Starch
Proteins
What is a monomer?
A kind of fat
The molecules that combine to make a macromolecule
A tiny protein
The byproduct of a reaction
What is the hydrolysis?
The combining of two monomers by your saliva
The separation of a polymer into monomers by hydrochloric acid
The combining to two monomers by taking out water
The separation of a polymer into monomers by water
How many bonds can a carbon atom have?
1
8
4
2
What do we call a long chain of carbons connecting to hydrogen atoms?
Polymers
Hydrocarbons
Proteins
Carbonhydros
What is the monomer of a carbohydrate?
Amino Acid
Fatty Acid
Monosaccharide
Nucleic Acid
What is it called when two molecules are linked together by taking away water?
Hydrolysis
Digestion
Denaturation
Dehydration Synthesis
What three molecules do we usually see in functional groups?
C, O, and Ag
C, H, and O
C, H, and He
C, H, and S
What is the function of carbohydrates?
TRANSPORT!
STRUCTURE!
FUEL!
ENZYMES!
What macromolecule is made from this monomer?
Proteins
Nucleic Acids
Carbs
Lipids
How are two monosaccharides combined to make a disaccharide?
Denaturation
Hydrolysis
Dehydration synthesis
Digestion
What is the shape of a DNA molecule called?
RNA
Double helix
Monosaccharide
Alpha helix
Which of the following is NOT a polysaccharide?
Starch
Cellulose
Glucose
Glycogen
Hydrophobic means that the molecule is scared of water
True
False
What is the function of an amino acid's R group?
Place for a functional group to bind to
Where it bonds to another amino acid
Style points
Lock and Key
Which of these processes takes place in your mouth to break down macromolecules into monomers?
Activation energy
Dehydration synthesis
Carbo-loading
Hydrolysis
What do we commonly use hydrocarbons for?
Food
Fuel
Steroids
Medicine
What is the monomer of a lipid called?
Amino Acid
Monosaccharide
Fatty Acid
Nucleic Acid
What kind of structure is this protein in?
Primary Structure
Secondary Structure
Tertiary Structure
Quaternary Structure
Where are nucleic acids found?
Protein
DNA
Fats
Starch
What monomer is pictured here?
Monosaccharide
Amino acid
Fatty acid
Nucleic acid
What the heck do enzymes do?
Produce heat
Speed up biological reactions
Keep pH constant
Look cool
What monomer is pictured here?
Monosaccharide
Amino Acid
Fatty Acid
Nucleic Acid
What is the function of a phospholipid?
Stores energy
Forms the cell membrane
Stores genetic information
Enzymes
Is this fatty acid saturated or unsaturated?
Saturated
Unsaturated
What makes alcohol so reactive?
A free Carbon atom
It is the way it is
A free -OH (hydroxyl group)
Two hydrogen atoms
What is a substrate?
Another name for an ion
What enters the enzyme's activation site
What leaves the enzyme's activation site
Another name for an enzyme
What is the area of the enzyme called where the substrates bind to the enzyme?
That spot
Reaction center
Active site
Substration area
What is the role of cholesterol?
Supports the cell membrane
Very reactive
Tastes great in food
Transports oxygen
Here's a phospholipid. Which part if it is hydrophilic?
The phosphate head
The fatty acid tails
All of it
Which of these is a polysaccharide?
Sucrose
Glucose
Iron
Starch
Do you eat nucleic acids almost everyday?
Yes
No
What happens to enzymes when they are exposed to high temperature?
They divide and multiply
They break apart (denature)
They react faster
They grow bigger
Is this fatty acid saturated or unsaturated?
Saturated
Unsaturated
What is the structure of a steroid?
Hydroxyl group
Fatty acid tail
Amino group
4 carbon rings
Do enzymes raise or lower the activation energy of a reaction?
Raise
Lower
What monomer is this?
Nucleic acid
Amino acid
Monosaccharide
Fatty acid
Are enzymes reusable?
Yes!
No!
What monomer is this?
Amino acid
Monosaccharide
Fatty acid
Nucleotide
What is a triglyceride?
A carboxyl group
16 fatty acids
A glycerol molecule with three fatty acids
A type of protein
Why should you avoid a high-cholesterol (fatty) diet?
Swells your cells
Clogs your blood vessels
Tastes bad
Leads to an increase in bodily pH
