Biology - Animal, Plant, and Specialised Cells

Year 9 exam revision

what does the nucleus do?

stores DNA and controls what happens in the cell

what does the cell wall do?

strengthens the cell and protects from damage

what does the cell membrane do?

controls what goes in and out of the cell

what does the cytoplasm do?

where all the chemical reactions happen

what does the mitohondria do?

it produces energy through respiration

what do chloroplasts do?

where photosynthesis happens, converting sunlight into energy in the form of glucose

what do the ribosomes do?

where protein synthesis occurs

what does the vacuole do?

it holds nutrients for the cell

what things does a plant cell have that an animal cell doesnt?

chloroplasts,a cell wall, and a vacuole

what do muscle cells contain?

mitochondria

what do red blood cells contain?

they contain haemoglobin

what do sperm cells contain?

nucleas and mitochondria

how have root hair cells adapted?

they have a long, thin, extension that protrudes into the soil which increases the surface area to absorb water more easily

how have nerve cells adapted?

Contain an elongated structure to carry electrical impulses across the body, and extensions to communicate with other cells quicker and easier.

how has a sperm cell adapted?

they have a streamline head which makes it easier to swim and an elongated tail which makes it easier and faster too.