2A - cell structure and division

Question 1

diff bet ani and plant cells

Answer 1

• cellulose cell wall wiith plasmodesmata
• a vacuole ( fluid-filled compartment)
• chloroplast

Question 2

algal cells

Answer 2

• like plans
• chloro = diff shape and size to plant

Question 3

fungal cells

Answer 3

multicellular
- cell wall made of chitin not cellulose
- don’t have chloroplast

Question 4

tissue

Answer 4

• specialised cells are grouped together to form tissues
• tissue = group of cells working together to perform a particular function

Question 5

cell organisation

Answer 5

• specialised cells grouped together to form tissues
• work together to form organs
• diff organs make up organ system

Question 6

prokaryotic cells replication

Answer 6

binary fission
- cell DNA and plasmid replicate
- cell gets bigger and DNA loops move opposite poles of cell
- cytoplasm beging to divide
- cyto divides and 2 dauther cells are produced

Question 7

viruses

Answer 7

• acellular
• protein coat = capsid with attachent proteins

Question 8

viral replication

Answer 8

1. virus attaches to host cells receptor proteins
2. genetic material is released into host cells
3. genetic material and proteins are replicated by host call ‘machinery’
4. viral components assemble
5. replicated viruses rele from host cell