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.

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1
Q

Organism

A

A living thing.

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2
Q

The process used by green plants to make food.

A

Photosynthesis

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3
Q

Which two substances are required for photosynthesis?

A

Carbon dioxide and water

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4
Q

Which two substances are made during photosynthesis?

A

Glucose and oxygen

(glucose/carbohydrates/sugars all OK)

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5
Q

The green pigment inside chloroplasts that captures light.

A

Chlorophyll

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6
Q

Chloroplast

A

Tiny structure inside plant cells where photosynthesis happens.

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7
Q

Release of energy from sugars that happens in cells.

A

Respiration

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8
Q

Glucose

A

A type of sugar (made in photosynthesis).

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9
Q

A chain of glucose molecules used as an energy store.

A

Starch

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10
Q

Group of molecules including sugar and starch.

A

Carbohydrates

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11
Q

A chain of glucose molecules used to build cell walls.

A

Cellulose

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12
Q

Word equation for photosynthesis

A

Carbon dioxide + Water → Glucose + Oxygen

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13
Q

Yellow/brown chemical used to test for starch

A

Iodine

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14
Q

Ethanol

A

Alcohol - used to remove the green colour from a leaf.

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15
Q

Describe the chemical test for starch

A

Iodine tuns from brown to blue/black (if starch is present)

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16
Q

Steps to test if starch is present in a leaf:

  1. Boil leaf in ethanol
  2. Add iodine - if it turns blue/black, starch is present
A

Steps to test if starch is present in a leaf:

  1. Boil leaf in water
  2. Boil leaf in ethanol
  3. Add iodine - if it turns blue/black, starch is present
17
Q

Steps to test if starch is present in a leaf:

  1. Boil leaf in water
  2. Add iodine - if it turns blue/black, starch is present
A

Steps to test if starch is present in a leaf:

  1. Boil leaf in water
  2. Boil leaf in ethanol
  3. Add iodine - if it turns blue/black, starch is present
18
Q

Steps to test if starch is present in a leaf:

  1. Boil leaf in water
  2. Boil leaf in ethanol
A

Steps to test if starch is present in a leaf:

  1. Boil leaf in water
  2. Boil leaf in ethanol
  3. Add iodine - if it turns blue/black, starch is present
19
Q

A comparison experiment used to see if something is having an effect.

A

Control experiment

20
Q

Producers

A

Plants (which trap energy using photosynthesis and use it to make molecules).

21
Q

Consumers

A

Animals which eat plants (or other animals).

22
Q

Food chains show how ______ is passed from plants to animals when the plants are eaten.

A

Food chains show how energy is passed from plants to animals when the plants are eaten.

23
Q

What can plants be used for? Suggest two uses.

A

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)

24
Q

Species

A

A group of organisms with common characteristics (features).

25
Q

Habitat

A

The place where a species can be found (where it lives).

26
Q

Biodiversity

A

The number of different species in an area.

27
Q

Distribution

A

The spread or range of organisms - where they are found.

28
Q

Ecosystem

A

The interaction between living things and their environment.

29
Q

Abundance

A

How many there are.

30
Q

Name this piece of equipment

A

Quadrat

31
Q

What are quadrats used for?

A

Sampling (e.g. counting number of flowers in a meadow)

32
Q

Name this piece of equipment

A

Choice chamber

33
Q

Choice chamber

A

Used to test which conditions are preferred by small organisms.

34
Q

Vertebrate

A

An animal with a backbone.

35
Q

Invertebrate

A

An animal without a backbone.

(e.g. insects)

36
Q

Key

A

Used to identify organisms by their characteristics.

37
Q

What type of key is this?

A

Paired statement key

38
Q

What type of key is this?

A

Branched key