8Da - unicellular or multicelluar

Question 1

Do animal cells have cell walls?

Answer 1

no

Question 2

What are the 7 life processes organisms carry out?

Answer 2

Movement, reproduction, sensitivity, growth, respiration, excretion, nutrition. (MRS GREN)

Question 3

Do unicellular cells need oxygen?

Answer 3

no

Question 4

Why do unicellular cells need oxygen?

Answer 4

Without oxygen they wouldn’t obtain enough energy to power their body processes.

Question 5

Why do tissues in multicellular organisms need raw materials to be transported to them?

Answer 5

Tissues in multicellular organisms need to have raw materials transported to them because diffusion would be too slow.

Question 6

What do the genes in viruses do?

Answer 6

The genes contain instructions for making new viruses.

Question 7

What does replication mean?

Answer 7

when a virus gets into a cell, the genesis causes the cell to make new copies of the virus, which then burst out of the cell.