Cells and simple cell transport Flashcards
Do animal cells have a cell wall?
No, the outside of an animal cell is the cell membrane
What do most plant cells have that most animal cells do not?
Cell wall, large permanent vacuole, and chloroplasts
What is the plant cell wall made from?
Cellulose
Where is the DNA found in a cell?
In the nucleus
What are ribosomes involved in?
Protein synthesis
Does a yeast cell have chloroplasts?
No
Why do sperm cells need a lot of mitochondria?
To release the energy for movement
What is diffusion?
The movement of particles from a place where they are in high concentration to a place where they are in low concentration
What are flagella involved in?
Movement
What are plasmids?
Rings of DNA
Why can’t you find mitochondria inside bacteria?
They are about the same size
What affects the rate of diffusion?
Difference in concentration Temperature Surface area Diffusion distance
Which part of a cell allows substances to enter and leave?
The cell membrane
How are palisade cells adapted for photosynthesis? ( 2 marks)
Any 2 from: Packed with chloroplasts Grouped together near the surface Tall with long sides
What is this?
Yeast a single celled fungus
What is this?
A bacterium
What does this diagram show?
Simple diffusion
What is this and what happens here?
It is a mitochondrion and respiration takes place here
