Biology
What controls what enters and leaves a cell?
Cell membrane
What is the smallest part of an element?
Atom
What energy store does a moving object have?
Kinetic energy
Which solution is used to test for starch?
Iodine
Odd One Out?
Molecule
Which organelle releases energy through respiration?
Mitochondria
Which subatomic particle has a positive charge?
Proton
Name one renewable energy resource.
Solar, wind, hydroelectric, geothermal, biofuel or tidal.
What colour does Benedict's solution turn if sugar is present?
Orange/brick red
Spot the mistake:
"Plant cells do not have a nucleus."
They do have a nucleus
Which process moves particles from a high concentration to a low concentration?
Diffusion
What is the difference between an element and a compound?
An element contains one type of atom; a compound contains two or more elements chemically combined.
What happens to light when it enters a different material at an angle?
It refracts (changes direction).
Which microscope objective should you start with?
The lowest magnification
Complete the sentence: Active transport moves particles from a ______ concentration to a ______ concentration.
Low to high
Name the three levels of organisation in the correct order after a cell.
Tissue → Organ → Organ system
What are atoms called when they have the same number of protons but different numbers of neutrons?
Isotopes
What type of wave is a sound wave?
Longitudinal wave
Why is a polystyrene cup used in energy experiments?
It reduces heat loss.
Why does ice float on water?
Ice is less dense than liquid water.
Name two adaptations of a root hair cell.
Large surface area, thin cell wall, many mitochondria.
What type of bonding forms when electrons are transferred between atoms?
Ionic bonding
Light travels through a vacuum, but sound does not. Why?
Sound needs particles to travel through but light can travel through empty space.
When investigating enzymes, what is the independent variable?
pH
Finish the sentence:
Energy cannot be created or destroyed, only...
Transferred