DO NOW:• What is the job of the cytoplasm?• Write the equation for cellular respiration:

• Put the following in order from smallest to largest: tissue, organ system, organelle, organism cell, organ

• Why do cells have organelles?• What is diffusion?

DO NOW:What is the job of the cytoplasm?

Transport materials in cellWrite the equation for cellular respiration:

O2 + C6H12O6 -------> CO2 + H2O + ATPPut the following in order from smallest to largest: tissue, organ system, organelle, organism cell, organ

Organelle, cell, tissue, organ, organ system, organismWhy do cells have organelles?

To perform all life functionsWhat is diffusion?

Movement from a high concentration to a low concentration without energy.

Respiratory, Circulatory, and Digestive system

ORGAN SYSTEMS Part 1

• Organelles are the small structures in cells that allow them to perform all life functions.

• Organelles do jobs that are similar to organs in our bodies.

• Organ systems (body systems) are made of many organs working together to do the same job.

Respiratory System:• Respiratory system is for doing cellular respiration.• Function:– To get OXYGEN into the body– To get rid of Carbon Dioxide WASTE

Gas Exchange:• Gas exchange- a place where gases diffuse across a

membrane• O2 diffuses into the blood from the alveoli• CO2 diffuses out of the blood and into the alveoli

Circulatory System:• Body’s transportation system• Blood is the liquid that flows through our body

and transports materials

Circulatory System:• Body’s transportation system• Blood is the liquid that flows through our body

and transports materials• Blood brings oxygen and nutrients to cells• Blood takes away CO2 and other waste from cells

Digestive System

• Heterotrophs- Consumers• Gets organic nutrients and breaks them down to

building blocks

Digestive System

• Heterotrophs- Consumers• Gets organic nutrients and breaks them

down to building blocks• Only SMALL molecules permeable to the

membrane.– Carbohydrates are digested into…. – Proteins are digested into….

Digestive System

• Heterotrophs- Consumers• Gets organic nutrients and breaks them

down to building blocks• Only SMALL molecules permeable to the

membrane.– Carbohydrates are digested into…. – Proteins are digested into….

Digestive System

• Heterotrophs- Consumers• Gets organic nutrients and breaks them down to

building blocks• Only SMALL molecules permeable to the

membrane.– Carbohydrates are digested into simple sugars– Proteins are digested into amino acids

Digestive System• Enzymes in the mouth, stomach, and small

intestine breakdown complex organic nutrients.

Digestive System• Enzymes in the mouth, stomach, and small

intestine breakdown complex organic nutrients.• The stomach is very acidic (pH 2)

Digestive System

• Enzymes in the mouth, stomach, and small intestine breakdown complex organic nutrients.

• The stomach is very acidic (pH 2)• Digestion, or breakdown, is completed in the small

intestines. • Organic molecules DIFFUSE into the blood stream

from the small intestines

• Digestive and Respiratory system ONLY exist for the purpose of cellular respiration.

• One job of the circulatory system is to bring cells what they need for cellular respiration.

Questions on the back of your paper