Pass Check: Cells & Organisms
Cell structure, specialisation, microscopy and transport across membranes.
Eukaryotic cell
A complex cell with a nucleus enclosing genetic material, found in animals, plants and fungi.
Diffusion
The net movement of particles from an area of higher concentration to an area of lower concentration, down a concentration gradient.
Stem cell
An undifferentiated cell that can divide to form many types of specialised cell.
Magnification
How many times bigger an image is than the real size of the object.
Quick check
Mixed quiz
1. Why must dividing cells be genetically identical in growth?
2. Why are mitochondria numerous in muscle cells?
3. What is magnification calculated as?
4. Which best explains therapeutic cloning?
5. Complete the sentence: Enzymes are ______.
6. Complete the sentence: Osmosis moves ______.
7. Which cell is adapted with a tail for swimming?
8. Which explains why enzyme activity is pH sensitive?