Cells
What is an organism called if it made of only 1 cell?
Unicellular
Why do plant cell have a rigid shape?
Their cell wall supports the cell structure
Name one specialised cell
sperm cell, root hair cell, red blood cell...
What colour are chloroplasts?
green
What two types of lens are found on a microscope?
Objective and eyepiece lens
Name one cell structure found in plant cells but not animal cells
Vacuole, cell wall, chloroplast
What organelles are found in animal and plant cells?
What do nerve cell do?
Carries messages/signals around the body
What does the cell membrane control?
Entry and exit of substances into the cell
What is a stain?
A dye that allows you to view the cell and its structures under a microscope
Nucleus
What does the vacuole store?
Cell sap (water, sugar, salt, nutrients)
How are root hair cells adapted to perform their funciton?
Hair structure increases surface area to absorb water
True or False: Cell walls are only found in plant cells
True
What is an example of discrete variation?
Hair colour, eye colour,
How many cell structures are in a plant cell?
6 (nucleus, cytoplasm, cell wall, cell membrane, vacuole)
What does the nucleus control?
Activities in the cell
How are sperm cells adapted to their function?
Have a tail that lets them swim to the egg
What happens in the cytoplasm?
Cell reactions
What shape is DNA?
A double helix
What is a cell?
The basic unit of life
What are the 6 cell structures we have learnt about?
Nucleus, cytoplasm, cell membrane, cell wall, chloroplast, vacuole
Why is it important to have specialised cells?
To perform specific functions around the body
Name all the cell structures beginning with C
Chloroplast, cytoplasm, cell wall, cell membrane
If the objective lens is 40x and the eyepiece lens is 5x. What is the total magnification?
200x