S1 - Photosynthesis and Biodiversity (complete) Flashcards
This deck covers the Photosynthesis and Biodiversity topic covered in S1 Science. Photosynthesis and Biodiversity is a Biology topic.
Organism
A living thing.
The process used by green plants to make food.
Photosynthesis
Which two substances are required for photosynthesis?
Carbon dioxide and water
Which two substances are made during photosynthesis?
Glucose and oxygen
(glucose/carbohydrates/sugars all OK)
The green pigment inside chloroplasts that captures light.
Chlorophyll
Chloroplast
Tiny structure inside plant cells where photosynthesis happens.
Release of energy from sugars that happens in cells.
Respiration
Glucose
A type of sugar (made in photosynthesis).
A chain of glucose molecules used as an energy store.
Starch
Group of molecules including sugar and starch.
Carbohydrates
A chain of glucose molecules used to build cell walls.
Cellulose
Word equation for photosynthesis
Carbon dioxide + Water → Glucose + Oxygen
Yellow/brown chemical used to test for starch
Iodine
Ethanol
Alcohol - used to remove the green colour from a leaf.
Describe the chemical test for starch
Iodine tuns from brown to blue/black (if starch is present)
Steps to test if starch is present in a leaf:
- …
- Boil leaf in ethanol
- Add iodine - if it turns blue/black, starch is present
Steps to test if starch is present in a leaf:
- Boil leaf in water
- Boil leaf in ethanol
- Add iodine - if it turns blue/black, starch is present
Steps to test if starch is present in a leaf:
- Boil leaf in water
- …
- Add iodine - if it turns blue/black, starch is present
Steps to test if starch is present in a leaf:
- Boil leaf in water
- Boil leaf in ethanol
- Add iodine - if it turns blue/black, starch is present
Steps to test if starch is present in a leaf:
- Boil leaf in water
- Boil leaf in ethanol
- …
Steps to test if starch is present in a leaf:
- Boil leaf in water
- Boil leaf in ethanol
- Add iodine - if it turns blue/black, starch is present
A comparison experiment used to see if something is having an effect.
Control experiment
Producers
Plants (which trap energy using photosynthesis and use it to make molecules).
Consumers
Animals which eat plants (or other animals).
Food chains show how ______ is passed from plants to animals when the plants are eaten.
Food chains show how energy is passed from plants to animals when the plants are eaten.
What can plants be used for? Suggest two uses.
Any of:
food/drink (e.g. potatoes)
fibres (e.g. cotton for clothing)
medicines (e.g. morphine from poppies)
building materials (e.g. bamboo)
fuels (e.g. sugarcane to make biofuels)
cosmetics and toiletries (e.g. aloe vera in skin care)
Species
A group of organisms with common characteristics (features).
Habitat
The place where a species can be found (where it lives).
Biodiversity
The number of different species in an area.
Distribution
The spread or range of organisms - where they are found.
Ecosystem
The interaction between living things and their environment.
Abundance
How many there are.
Name this piece of equipment
Quadrat
What are quadrats used for?
Sampling (e.g. counting number of flowers in a meadow)
Name this piece of equipment
Choice chamber
Choice chamber
Used to test which conditions are preferred by small organisms.
Vertebrate
An animal with a backbone.
Invertebrate
An animal without a backbone.
(e.g. insects)
Key
Used to identify organisms by their characteristics.
What type of key is this?
Paired statement key
What type of key is this?
Branched key
