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