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Flashcards in Energy In Biomass Deck (18):
1



Radiation form the sun is the source of energy for most communities of living organisms, a small amount of which is absorbed by green plants and algae
TRUE OR FALSE

True

2




WHAT IS A FOOD CHAIN

A food chain shows what eats what in a particular habitat.

3




WHAT ARE PYRAMIDS OF BIO MASS

Pyramids of biomass reveal the mass of living material at each stage in a chain.

• the amount of materials and energy decreases from one stage to the next

4




STAGES OF THE FOOD CHAIN

Producer = green plants and algae, they make food through photosynthesis

Primary consumer = usually eat plant material, herbivores (rabbits, cows)

Secondary consumer = usually eat animals, carnivores (cats, lions)

Predators = kill for food, they are usually secondary or territory consumers

5




WHAT IS ENERGY TRANSFER

Energy is transferred along food chains from one stage to the next but not all the energy is available to organisms at one stage can be absorbed by organisms to the next one

The amount of energy decreased from one stage to the next.

6




WHERE DOES THE ENERGY GO IN ENERGY TRANSFER

• some energy available goes into growth and production of offspring

• some is released through respiration (movement and other processes)

• some energy is lost in waste materials

7




WHAT DOES BIOMASS MEAN

Biomass means the mass of living material at a stage in a food chain

8




3 DECAY PROCESSES

• decay is an essential life process that digests food or waste matter and recycles material
• material from living things decay because they are digested (broken down) by microorganisms
• these microorganisms cause decay by realising enzymes that break down compounds to be absorbed by their cells

9




WHAT ARE THE TWO MAIN GROUPS OF DECOMPOSERS

• BACTERIA

• FUNGI

10




3 FACTORS AFFECTING DECAY

• moisture

• temperature

• amount of available oxygen

11




WHEN ARE MICROORGANISMS MOST ACTIVE AND DIGEST MATERIALS FASTEST

Mircroorganisms are more active and digest materials faster when they are in moist, warm and aerobic conditions

But will digest more slowly in dry, can of and anaerobic conditions

12



HOW ARE SUBSTANCES CONTINUOUSLY RECYCLED

Some of the substances released during decay are needed by plants for healthy growth

• in a stable community of living things processes that return substances to the environment (such as decay) are balanced by the processes that remove and use substances in this way, the substances are continuously recycled

13




WHAT IS THE CARBON CYCLE

The carbon cycle shows how carbon moves from the atmosphere, through various animals and plants, and then back into the atmosphere again

14




WHAT CARBON COMPOUNDS DO ALL CELLS CONTAIN

• proteins
• fats
• carbohydrates

15



CARBON IS PASSED FROM THE ATMOSPHERE, AS CARBON DIOXIDE TO LIVING THINGS...

... it is passed from one organism to the next then returned into the atmosphere again

16




HOW IS CARBON DIOXIDE REMOVED FROM THE ATMOSPHERE

Photosynthesis

17




HOW IS CARBON DIOXIDE RETURNED INTO THE ATMOSPHERE

Respiration

18



HOW IS CARBON PASSED FROM ONE ORGANISM TO THE NEXT
actual carbon cycle

1. An animal eats a plant

2. Carbon from the plant becomes part of the fats and proteins of the animals

3. Microorganisms and some animals then feed on the waste material from animals, and the remains of dead animals and plants

4. The carbon then becomes part of these microorganisms