WorksheetsBiology Exam Revision
Total questions: 25
Worksheet time: 25mins
Which is the correct order of bond strength from weakest to strongest bond?
Covalent Bonds, Ionic Bonds, Vander Waals Rorces
Covalent Bonds, Vander Waals Forces, Ionic Bonds
Ionic Bonds, Covalent Bonds, Vander Waals Forces
Vander Waals Forces, Covalent Bonds, Ionic Bonds
Where does a reactant bind to an enzyme during a chemical reaction?
Catalyst
Active site
Product
Substrate
Which of the below is NOT a factor that affects enzyme activity?
pH
Temperature
Light
Enzyme concentration
Select all of the statements that are true about enzymes.
Increase the amount of product produced
Are biological catalysts
Function like a lock and key with a specificity
Get used up in a reaction leaving none to be reused
What is the minimum/ least amount of energy required/needed to form products in a chemical reaction?
Reaction rate
Energy input
Activation energy
Energy transfer
The elements or compounds that are made from a chemical reaction are...
Products
Catalysts
Reactants
Active sites
Chemical bonds that transfer electrons from one atom to another are called...
Hydrogen Bonds
Ionic Bonds
Covalent Bonds
Vander Waals Bonds
Subtopic 1.2: Water and Solutions
In a solution that is buffered, what will happen to the pH if an acid is added?
The pH will increase
The pH will not change
The pH will decrease
All of the above
Acids...
Increase the number of water molecules
Take up OH- ions and become neutral
Release H+ ions in solution
Both A and B are correct
When you mix oil and vinegar together, you caused them to form a...
Suspension
Solution
Colloid
Homogeneous mixture
A substance that produces or releases hydroxide (OH-) ions in a solution is a(n)...
Acid
Buffer
Base
Solute
A lemon has a pH of 2. It would be described as...
Basic
Neutral
Natural
Acidic
Your blood has a pH around...
2
4
7
9
Subtopic 1.3: The Building Blocks Of Life
Select all of the statements that are true or correct about carbon.
Forms four covalent bonds
Can form long chains
Bonds with other carbon atoms
Sometimes shares two pairs of electrons with another atom
Which of the below is NOT a major biological macromolecule?
Lipid
Sodium chloride
Carbohydrate
Protein
Nucleotides are made of three parts: a phosphate group, a nitrogen base and a...
Glycerol
Lipid
Sugar
Fatty acid
The difference between the 20 amino acids is found in the...
Amino group
R group
Carbon atoms
Carboxyl group
A triglyceride is unsaturated if it has...
A hydrogen
A nucleotide
Carbon-carbon double bonds
Carboxyl group
Which macromolecule is made of glycerol and fatty acids?
Proteins
Lipids
Nucleic acids
Carbohydrates
Select all of the macromolecules that provide or store energy within organisms.
Nucleic acids
Lipids
Proteins
Carbohydrates
The monomer of a carbohydrate is...
A fatty acid
A nucleic acid
An amino acid
A monosaccharide
ATP...
Gives enzymes for metabolism
Is a high energy nuclear acid
Gives structural support to plants
Is an amino acid
Muscles, skin and hair are made of which macromolecule?
Lipids
Proteins
Nuclear acids
Carbohydrates
