What is the smallest living unit in a living thing?
a cell
What 4 features do plant and animal cells share?
nucleus, cell membrane, cytoplasm and vacuoles
What 2 features do plants cells have that animal cells don't?
cell walls, chloroplasts
What is the function of the nucleus?
It controls the functions of the cell, such as reproduction
What is the function of the cell membrane?
It controls the substances that enter and leave the cell
What is cytoplasm?
It is a jelly like substance that fills the cell where chemical reactions happen
What do vacuoles contain?
Water and minerals which the organism needs in order to grow
What is the function of chloroplasts?
they contain chlorophyll which is needed for photosynthesis
What is the function of cell walls?
they protect the cell
What are the three life processes that all living things perform?
Nutrition, reproduction and interaction
What two types of reproduction are there and how are they defined?
Asexual reproduction is when only one organism is required. Sexual reproduction involves two individuals of the same species.
What is interaction?
When living things react to stimuli (changes in the environment)
How do animals take in nutrients?
by feeding on other living things
How do plants take in nutrients?
by producing their own food through photosynthesis
How do decomposers take in nutrients?
by feeding on the remains of dead plants and animals
What is the function of red blood cells? Why are they red?
They carry oxygen around the body. They are red because they contain hemoglobin, a bright red protein that contains iron.
