B4.1 Cell Biology

What are the main differenced between a eukaryotic and a prokaryotic cell?

Eukaryotic cells - Have a nucleus, are bigger and have mitochondria. Prokaryotic cells have a DNA loop.

Name the function of the mitochondria

Site of respiration.

What 3 things will I find in a plant cell and not an animal cell?

1. Cell wall

2. Vacuole

3. Chloroplast

What is the equation to calculate magnification?

Magnification = size of image / size of real object

What is mitosis?

Cell division used for the growth and development of multicellular organisms.

What is a stem cell?

An undifferentiated cell.

What is diffusion?

The movement of a substance from an area of high concentration to an area of low concentration.

Name 3 things that can speed up the rate of diffusion.

1. Concentration gradient

2. Temperature

3. Surface area

What is osmosis?

The movement of water from a dilute solution to a concentrated solution through a partially permeable membrane.

What is active transport?

When substances move from a more dilute solution to a more concentrated solution. It requires energy