Homeostasis TK

Which of the following is an example of maintaining homeostasis?

• a tick sucking blood from a dog

• plant guard cells remaining open in dry weather

• breathing faster when running

• a cut does not stop bleeding

Which process makes energy (ATP)?

• mitochondria

• animal

• active transport

• respiration

Which organelle makes energy (ATP)?

• respiration

• mitochondria

• animal

• active transport

Which two systems take in materials needed to make energy (ATP)?

• circulatory

• respiratory

• digestive

• immune

Respiration uses (a)   and photosynthesis uses​ (b)   ​ . Respiration takes place in ​ (c)   photosynthesis takes place in ​​ (d)  

• oxygen
• carbon dioxide
• mitochondria
• chloroplast

Cells communicate with each other with their

• receptors

• nerves

• mitochondria

• nucleus

Organisms that make oxygen are

• autotrophs

• heterotrophs

• fish

• humans

Diffusion is the movement of molecules from an area of _____ concentration to an ______ concentration

• High, low

• Low, high

• Low, low

• High, high

If there is more oxygen in the blood than in an organ, which direction would the oxygen move?

• Out of the blood
• Into the blood

The picture is an example of...

• active tranport
• passive transport
• diffusion
• osmosis