key words 2

Question 1

transport across cell membranes

Answer 1

-non polar , lipid soluble can pass through phospholipid bilayer
- more folded membranes
- more mitochondria
- more channel protiens

Question 2

cell cycle

Answer 2

• chromosomes are visible beacause they have condensed
• homologous pair has same alleles
• chromosomes become longer in telophase
• squash sample down to allow light to pass through
• sample at root as where it is actively going through mitosis

Question 3

cell structure

Answer 3

rer- protein synthesises
Golgi- modifies protein and packages into vesicle
ribosomomes- in all cells and site of translation
cell wall- fungi-chitin, plants- cellulose, bacteria -murein

Question 4

microscope

Answer 4

• optical - living, colour, poor resolution due to long wavelength of light
• electron - good resolution as smaller wavelenghth of light, dead specimen