Mechanics
What is a force?
A push or pull that causes an object to undergo a change in speed, direction or shape.
What is the formula for velocity?
Change in distance divided by change in time
What is the number of chromosomes found in a normal human gamete?
23
What is a variation?
The differences between individuals
What is a catalyst?
Speeds up a reaction
What is the measurement for force?
Newtons
What is the formula for work?
Force X distance
What is the number of chromosomes found in a normal somatic cell?
46
What is mitosis?
Cell division required for growth and repair of tissues.
What is the pH scale?
Measures the acidity/alkalinity of a solution. Ranges from 1-14.
What is kinetic energy?
Energy of an object due to its motion
what is the formula for acceleration?
change in velocity divided by change in time
What is the abbreviation for deoxyribonucleic acid?
DNA
What type of cells are produced during meiosis?
Gametes
Particles must collide in the correct orientation and with enough energy.
What is energy measured in?
Joules
What is the formula for power?
work divided by time
What is an alternative form of a gene called?
Allele
What is a nucleotide made up of?
Phosphate, base, sugar
How does concentration affect the reaction rate?
If you increase concentration the reaction rate will increase and if you decrease concentration the reaction rate will decrease.
What is the force exerted on a mass by gravity?
Weight
What is the measurement for gravity when on earth?
10 N/kg
What causes mutations?
Mutagens
What are two different ways that lead to variation?
Meiosis (crossing over and independent assortment) and mutations
How does temperature affect reaction rate?
If you increase temperature it will increase the reaction rate because there is more heat energy which means there is more kinetic energy.