B2.1 Cells Flashcards
1
Q
What are bacterial and yeast cells like ?
A
Yeast is a single-called organism
And
Bacterial cells have no nucleus
2
Q
Specialised cells are adapted to carry out a particular function. Give examples.
A
Root hair cell- absorbs water and mineral ions from the soil- long ‘finger-like’ process with very thin wall, which gives a large surface area.
Leaf cell- absorbs light energy for photosynthesis- packed with chloroplasts regular shaped, closely packed cells from a continuous layer for efficient absorption of sunlight.
3
Q
How can dissolved substances move in and out of cells?
A
They move in and out of cells by diffusion.
4
Q
List the parts of an animal cell and plant cell and the job they do
A
Cell membrane~ protective barrier Nucleus~ contains DNA Ribosomes~ make proteins Mitochondrion~power source Lysosome~ digestion
