Life Science

Which one is an example of homeostasis?

• a human body shivering when it is cold

• Pine needles having a thick, wax covering to prevent water lost

• A dog panting when it is hot

• all of the above

What needs to happen in order for a cell to make energy?

• food molecules need to be delivered to the cell

• oxygen needs to be delivered to the cell

• A chemical reaction would take place in the cell

• All of the above

Tags

NGSS.MS-LS1-2

Oxygen is delivered to the cell by

• red blood cells

• white blood cells

• plasma

• the digestive system

_____ are the type of cell that make your blood clot but they also form scabs when you have a cut.

• white blood cells

• red blood cells

• aveoli

• platelets

Which element do humans exhale the exact same amount as we inhale?

• oxygen

• carbon dioxide

• nitrogen

• carbon

Where does the carbon dioxide come from that we exhale?

• It is a waste product of our cells

• its the exact amount that we inhale

• it is the waste product of our lungs

• It is the extra energy we do not need and can not store.

Inhaling oxygen and delivering it to the circulatory system and then taking carbon dioxide from the circulatroy system back through the same path to exhale is an example of a ____________.

• one way system

• open system

• diverse system

• two way system

A(n) ________ alerts yo to a substance being present.

• Chemical reaction

• indicator

• carbon dioxide

• solution

A cell needs__________and _________ in order to make energy.

• Cardon dioxide and oxygen

• oxygen and an indicator

• food molecules and cardon dioxide

• food molecules and oxygen

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-6

What are the two main jobs of the skeletal system?

• protect organs and connect to muscles

• Protect organs and move blood

• protect organs and give structure

• give structure and move blood