Ecosystems
What is the highest level of a food chain
Tertiary consumer
What is an Ecosystem
It refers to all the abiotic factors and the organisms in an environment living and interacting together.
What happens when a pathogenic (disease causing) micro-organism invades the human body?
They are destroyed by white blood cells
What is found in the nucleus of an atom
Protons and neutrons
When constructing a food web, what does the arrow point to?
The predator
The 3 natural cycles that are present in the environment include
Water, Nitrogen & Carbon
What is an abiotic factor?
Something in that is non-living
Where are hormones produced?
Endocrine glands
To determine the number of neutrons in an atom you
Subtract the mass number from the atomic number.
Where do producers go on a food chain?
At the bottom
What is the element that plants use to make proteins?
Nitrogen
What is a dendrite part of?
A neuron
Which body system is responsible for sending messages between the brain and other parts of the body?
Nervous system
The charge of an atom is always
neutral
In a line graph, what does our scale need to have?
An even and regular scale, going up by the same amount, at the same spaces
What is a prey species?
Something that is eaten by another organism
What is an electron
A negatively charged subatomic particle
Identify one difference between the first and second lines of defence.
The first line aims to prevent infection while the second line responds to an infection
What is the electronic configuration of a chlorine atom? Chlorine has an atomic number of 17.
2, 8, 7
When drawing a line graph, what kind of line should we always use?
A line of best fit
What could make populations increase quickly?
No natural predators, hunting, increase of food supply (any of above)
What is a producer
Something that produces its own energy eg. grass
The skin is part of which line of defense?
First
What is the structure of a word equation
Reactants -> Products
If a line is straight across in a line graph what does it mean?
That the measurement is constant/not changing