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 is the function of the stomach
Churns food to break it down, acid digests food and kills germs
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 colour does Benedicts solution turn in the presence of glucose?
Brick Red
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
What is the function of the small intestine?
Digests food and abosrbs digested products into the blood
Name 1 type of joint
hinge, ball and socket, pivot, saddle,
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 red blood cells adapted for their function?
Concave (dented) shapre increases surface area for oxygen absorption
No nucleus gives more space to carry oxygen
What process moves food through the digestive system?
Peristalsis
Name 3 blood vessels
Arteries, veins, capillaries
What is a cell?
The basic unit of life
What does the cell membrane control?
Exit and entry of substances into the cell
Why is it important to have specialised cells?
To perform specific functions around the body
What is the function of the large intestine?
Absorbs water and contains gut bacteria which helps digest and absorb nutrients
If the objective lens is 40x and the eyepiece lens is 5x. What is the total magnification?
200x