Plant cell structure, Photosynthesis, Transport

Question 1

Nucleus

Answer 1

Control centre of the cell. contains DNA

Question 2

Cytoplasm

Answer 2

Liquid gel where most chemical reactions take place

Question 3

Cell membrane

Answer 3

holds the cell together, controls what goes in and out

Question 4

Mitochondria

Answer 4

where respiration takes place

Question 5

Ribosomes

Answer 5

where protein synthesis takes place

Question 6

Cell wall

Answer 6

made of cellulose, strengthens and gives support

Question 7

Vacuole

Answer 7

contains cell sap solution, helps to maintain internal pressure

Question 8

Chloroplasts

Answer 8

contain chlorophyll which absorbs light for photosynthesis

Question 9

Do bacterial cells have a nucleus?

Answer 9

no

Question 10

Chromosomal DNA

Answer 10

controls the cells activities and replication, in the cytoplasm

Question 11

what is the equation for photosynthesis?

Answer 11

carbon dioxide + water > glucose + oxygen

Question 12

What are the 4 key factors affecting the rate of photosynthesis?

Answer 12

• Light intensity
• Temperature
• Carbon dioxide concentration
• Water concentration

Question 13

Why are xylem cells end walls broken?

Answer 13

to allow water and dissolved minerals to pass through

Question 14

what are two adaptions of the root hair cell and what do they allow the cell to do?

Answer 14

• Long projections (increase surface area to absorb more water and minerals)

Question 15

what is the function of lignin?

Answer 15

• strengthens the cell walls of xylem cells

Question 16

what is the stomata?

Answer 16

-gaps in the lower epidermis of leaves, that make easier the diffusion of gases

Question 17

what state would the stomata be in if there’s lots of water available?

Answer 17

open to allow gases for photosynthesis to move freely in and out of the leaf

Question 18

what state would the stomata be in if there’s little amounts of water?

Answer 18

closed to prevent further water loss, achieved by guard cells returning to a limp state after they lose water

Question 19

what state would the stomata be in at night?

Answer 19

closed because in the absence of sunlight carbon dioxide is not required for photosynthesis, there only objective is to prevent water loss