Cycles

Cycle

Biogeochemical Cycles

Carbon

Cycle

Nitrogen

Labelling

Label the Biomolecule chart

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builds and repairs cells

genes that determine your traits

Proteins

Carbohydrates

main source of energy

Lipids

Nucleic Acid

insulation

Cycle: sequence of a recurring events

Carbon Cycle

Carbon is the chemical backbone

of life on Earth

Carbohydrates: C, H, O

Short term energy source, plant cell walls

Lipids : C, H, O

Long term energy storage, cell membranes

Proteins: C, H, O, N

Enzymes, Structure, Movement, Hormones

Nucleic Acids: C, H, O, N, P

GeneticMaterials

Multiple Select

Which Biochemical contains Carbon in it?

Select all that apply

• Carbohydrates

• Lipids

• Nucleic Acids

• Proteins

CO2 in the atmosphere

Carbon cycle

Plant

respiration

Industrial

combustion

Animal

respiration

CO2

Carbon
Dioxide

(CO₂)

CO2

Fossils and
fossil fuels

Decomposition

Photosynthesis

Glucose
(C₆H₁₂O₆)

CO2

Consumers

Plants

Carbon

ABSORB carbon

from the

atmosphere

RELEASE

carbon into the

atmosphere

Decomposers

RELEASE

carbon into the

atmosphere

Fossil Fuels

RELEASE

carbon into the

atmosphere

Match

Match the following

• CO2

Absorb Carbon

Release Carbon

Carbon Dioxide

• Absorb Carbon

• Release Carbon

• Carbon Dioxide

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mitochondria

glucose

sunlight

food

ATP

chloroplast

Nitrogen Cycle

Multiple Choice

What type of relationship does Plants and nitrogen fixing bacteria have?

Plants Gets Nitrogen in the form of nitrates from Bacteria

Bacteria Gets shelter from living in the Plant’s roots

Nitrogen is essential for protein synthesis and

DNA production

Proteins: C, H, O, N

Enzymes, Structure, Movement, Hormones

Nucleic Acids: C, H, O, N, P

GeneticMaterials

Multiple Select

Which Biomolecules contain Nitrogen?

• Carbohydrates

• Nucleic Acids

• Proteins

• Lipids

N in the atmosphere is unusable

Nitrogen Cycle

Decomposition

Lightning
can fix
Nitrogen

Nitrogen fixing bacteria

Unused Nitrogen

Bacteria “Un Fixes” Nitrogen

Multiple Choice

What converts nitrogen gas into a usable form for plants and animals?

• bacteria

• rain

• fungi

• car exhaust