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Life Functions Common to Living Things
1. Transportation: moving the organism, it’s parts or internal material
2. Nutrition: producing or getting food3. Reproduction: making new cells or organisms4. Regulations: responding to changes in the
surroundings5. Metabolism: breathing, digesting, eliminating
waste6. Synthesis: directing cell activities to create needed
substances
Certain cells are designed for different jobs/roles Nerve cells conduct impulses to the brain and spinal
cord Muscle cells contract Blood cells carry oxygen
Plants makes food during photosynthesis Plants use energy from the sun, along with carbon
dioxide and water to make glucose (sugar) and oxygen
carbon dioxide + water + sunlight (energy) → glucose +oxygen
Energy stored in food is used by the mitochondria and changed to a form of energy that the cell can use to grow and do work
Half the energy stored in glucose is released as thermal energy (heat)
The process requires oxygen and produces carbon dioxide and water
glucose + oxygen → carbon dioxide + water + energy
Photosynthesis stores energy Cellular respiration releases energy
Maybe you noticed already but the equations for photosynthesis and cellular respiration are opposite of each other
They are closely connected in a cycle
Digestive System◦ Breaks down and digests food◦ Rids the body of solid wastes◦ Parts include: teeth, stomach, large intestine
Nervous System◦ Provides a communication network◦ Regulates life functions◦ Parts include: brain, spinal cord, nerves
Circulatory System◦ Blood transports food molecules, oxygen, carbon
dioxide, wastes◦ Parts include: heart, veins arteries
Urinary System◦ Kidney filters blood that has collected wastes from
cells and then transports these wastes to the urinary bladder
◦ Urinary bladder holds waster until they’re excreted◦ Parts include: kidney, ureter and urinary bladder
Blood pressure cuff: used to check blood pressure
Stethoscope: used to check heart rate X-ray: shows damage to bone, can go through
soft tissue like skin and muscles
CAT scan: an x-ray of the brain to check for swelling or internal bleeding
EKG (Electrocardiography): diagnosis heart disorders, show heartbeat pattern
EEG: shows brain activity Endoscope: allows doctors to see inside
hollow organs like the stomach to check for problems
Blood is pumped through the body by the heart
You can feel this pulse with your fingers, it will tell you have fast your heart is beating
A sphygmomanometer measures bp It gives you two numbers, the top number
should be around 120 and is referred to systolic blood pressure, it is from when your heart contracts to move the blood
Diastolic is the other number, it is usually around 80 and is when the heart relaxes
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