CHARACTERISTICS OF LIFE

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CHARACTERISTICS OF LIFE
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ALL LIVING THINGS have CELLS.

• SPECIFIC STRUCTURES CARRY OUT PARTICULAR
  FUNCTIONS
• (Division of labor)

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ALL LIVING THINGSRESPOND TO STIMULI.

• Stimulus
• A physical change in the
  internal / external environment
• Heat / light / pain / touch
• Response
• reaction to stimulus
• Perspire / squint / pull back

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ALL LIVING THINGS MAINTAIN HOMEOSTASIS.

• All living things maintain stable internal
  conditions.

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HOMEOSTASIS

• MAINTAIN STABLE INTERNAL CONDITIONS
• ENDOTHERMIC humans/birds
• 370C AVERAGE BODY TEMPERATURE
• 210C COMFORTABLE ROOM TEMPERATURE
• BLOOD PRESSURE / HEART RATE / RESPIRATION / CBC
• EXOTHERMIC reptiles

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ALL LIVING THINGS USE ENERGY.

• METABOLISM is the sum of all of the chemical
  processes that occur in an organism.

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ALL LIVING THINGS GROW and DEVELOP.

• CELL ENLARGEMENT
• Cells grow bigger
• Making more cells

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ALL LIVING THINGS HAVE THE ABILITY TO REPRODUCE.

• .

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REPRODUCTION

• CREATES NEW OFFSPRING
• CONTINUATION OF THE SPECIES
• Reproduction IS necessary for the survival of the
  species
• Reproduction is NOT necessary to the survival of
  the organism.

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ALL LIVING THINGS EVOLVE.

• Change over time
• Explains biodiversity

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Macromolecules

• Macrolarge
• Four compounds

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Macromolecules

• CARBOHYDRATES
• provide ENERGY
• CARBON/ HYDROGEN / OXYGEN
• GLUCOSE
• product of photosynthesis

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Macromolecules

• LIPIDS
• STORE ENERGY
• BUILDS AND REPAIRS CELLS

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Macromolecules

• PROTEINS
• NEEDED FOR CHEMICAL REACTIONS
• BUILDS AND REPAIRS CELLS

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Macromolecules

• NUCLEIC ACIDS
• CARRY HEREDITARY INFORMATION
• CARRIES INSTRUCTIONS FOR MAKING PROTEINS

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CRISIs MENDER

• C CIRCULATORY
• R RESPIRATORY
• I INTEGUMENTARY
• S SKELETAL
• I IMMUNE
• (s)

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CRISIs MENDER

• M MUSCULAR
• E EXCRETORY
• N NERVOUS
• D DIGESTIVE
• E ENDOCRINE
• R REPRODUCTIVE

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11 organ systems

• Circulatory transports nutrients and
  wastes heart / aorta
• Respiratory
• exchanges gases-- lungs
• Integumentary protects against pathogens
  skin

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11 organ systems

• Skeletal provides protection and
  support
• Immune protects against infection
• lymph nodes

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11 organ systems

• Muscular provides movement biceps /
  triceps
• Excretory filters wastes
  kidneys / bladder
• Nervous receives stimuli and responds
• brain
  / spinal cord

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11 organ systems

• Digestive breaks down and absorbs food
• Stomach / intestines / liver
• Endocrine regulates metabolism
  produces hormones
• maintains homeostasis
• thyroid / adrenal gland

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11 organ systems

• Reproductive
• produces gametes (Egg / sperm)
• gonads (ovaries/ testes)

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ORGANISM

• Groups of organ systems WORKING TOGETHER
• A living thing
• Unicellular / Multicellular

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Questions