How plants use glucose Flashcards
What are the 5 ways plants can use glucose?
- For respiration
- Making cell walls
- Making proteins
- Stored in seeds
- Stored as starch
What do plants have to use glucose for before they can do anything else with it? Why?
Use it to respire.
This releases energy which enables them to convert the rest of the glucose into other useful substances.
What substance is glucose converted into to make cell walls?
Cellulose
When might a plant focus on converting glucose into cellulose?
When it is rapidly growing
Complete the sentence:
______ is combined with ______ (absorbed from the _____) to make ______, which are then made into ______.
Glucose is combined with nitrate ions (absorbed from the soil) to make amino acids, which are then made into proteins.
What is glucose converted into for storing in seeds?
Lipids (fats and oils)
Name an example of a type of seed containing lots of oil and is used in cooking oil and margarine.
Sunflower
What, besides lipids, do seeds store?
Starch
Where is starch stored in a plant? (4 places)
- Roots
- Stems
- Leaves
(4. Seeds)
Why do plants store starch?
To use to convert into energy when photosynthesis isn’t happening i.e. the winter
Why is starch better for storing than glucose?
Starch is insoluble, unlike glucose.
A cell with lots of glucose would draw in loads of water and swell up.
Which 2 plants store a lot of starch underground over the winter? Why?
Potato and parsnip plants.
So a new plant can grow from the starch the following spring
What part of potato and parsnip plants do we eat?
The swollen storage organs
SURPRISE QUESTION!
What is the word equation for photosynthesis?
………………………………………sunlight……………………………
Carbon dioxide + water ———–> glucose + oxygen
………………………………………chlorophyl………………………..
