Where do chemical reactions take place in the cell?
cytoplasm
What are the 3 states of matter?
solid, liquid and gas
What are 5 types of energy?
Any five from: nuclear, electrical, chemical, sound, gravitational, kinetic, thermal, elastic, radiant, magnetic lgiht
name 2 properties of a gas
No fixed shape - takes the shape of the container. Can be squashed (compressed). Can flow.
What are consumers?
animals that eat food
What cell structure is this: Controls the activities of the cell. Contains genetic material (DNA), which is packaged into structures called chromosomes.
Nucleus
name 2 properties of a liquid
No fixed shape - takes the shape of the container. Cannot be squashed (compressed). Can flow.
name 2 properties of a solid?
Have a fixed shape Cannot be squashed (compressed) Cannot flow Particles cannot move, but can vibrate on the spot
What is an example of a signle-celled organism?
Amoeba
What is an element?
A substance made of only one type of atom.
What is an atom?
The smallest part of an element that can exist
What does the arrow in a food chain mean?
energy flow/eaten by
What is the function of chloroplasts?
Contain the pigment chlorophyll which absorbs light to provide energy for photosynthesis.
What structure is filled with cell sap to keep the cell rigid to support the plant?
permanent vacuole
Where does respiration occur in the cell?
mitochondria
What are the building blocks of life?
cells
What is a contact force?
occurs when the objects are touching. e.g. friction, air resistance and upthrust
What is a rigid structure that helps to strengthen the cell and provides support for the plant?
cell wall
What controls the movement of substances into and out of the cell.
Cell membrane
What is the table that organises all the elements called?
periodic table
What is a non-contact force?
occurs when the objects aren't touching e.g. gravity, magnetism and electrical forces
What are producers?
plants that make their own food
Can energy be created or destroyed?
No!
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