Biology 1.1

Question 1

what does catalyse mean?

Answer 1

speed up

Question 2

what does the nucleus do?

Answer 2

contains DNA + controls activities of the cell

Question 3

what does the cytoplasm do?

Answer 3

where the chemical reactions in the cell happen

Question 4

what does the cell membrane do?

Answer 4

control what enters + leaves the cell

Question 5

what does the mitochondria do?

Answer 5

where aerobic respiration happens (the action of breathing)

Question 6

what does the cell wall do?

Answer 6

provides structural strength for the cell

Question 7

what does the vacuole do?

Answer 7

contains cell sap + when full, pushes against wall making it firm

Question 8

what does the chloroplast do?

Answer 8

contains chlorophyll

Question 9

what is chlorophyll?

Answer 9

a green chemical involved in photosynthesis

Question 10

how do you tell the difference between an animal cell and a plant cell?

Answer 10

plant cells have cell walls

Question 11

what is a multicellular organism?

Answer 11

organism with more than one cell

Question 12

what is an organism?

Answer 12

anything that’s alive

Question 13

what is tissue?

Answer 13

lots of the same type of cell working together

Question 14

what is an organ?

Answer 14

lots of different tissues working together to do a particular job

Question 15

what is an organ system?

Answer 15

lots of different organs working together to do a particular job