Tissues, cells + organs SPEC

Question 1

What features that plant + algal cells have that animal + humans cells don’t?

Answer 1

Cell wall, cellulose, strenthens cell

Chloroplasts, absorb light energy, make food

Permanent vacoule - cell sap

Question 2

Describe bacterial cell

Answer 2

cell membrane
cell wall
cytoplasm
genes not in distinct nucleus

Question 3

Describe yeast cell

Answer 3

single-celled organism 
nucleus 
cell membrane 
cell wall 
cytoplasm

Question 4

why may cells be specialised?

Answer 4

to carry out a particular function

Question 5

Give some examples of specialised cells?

Answer 5

plant cells, many chloroplasts, photosynthesising
mesophyll cells leaf

root hair cells
increased surface area –> efficient absorbtion
mineral ions + water

sperm + muscle cells, lots of mitochondria
release energy for movements

gland cells, lots of ribosomes
make lots of protein
produce enzymes