Homeostasis & Cell Processes Part I (7) 19-20

T or F: Homeostasis is the maintenance of a constant internal state in a changing environment.

• True

• False

In order to survive your cells need to be able to do which of the following?

• Obtain & Use Energy

• Make New Cells

• Exchange Materials & Eliminate Wastes

• All of the Above

T or F: Unicellular organisms need energy & materials in order to carry out life processes.

• True

• False

How do unicellular organisms exchange materials with their environment?

• By use of cells, tissues, & systems working together.

• Directly with their environment.

• They do not exchange any materials with their environment.

The use of xylem & phloem tissues are used by what type of organism to help maintain homeostasis?

• Animals

• Fungi

• Protists

• Plants

How do cells get the energy that is needed to maintain homeostasis?

• By making their own food.

• By consuming their own food.

• By breaking down materials such as food.

• Through processes like photosynthesis

The process by which cells use oxygen to produce energy for cell processes is called

• Photosynthesis

• Cellular Respiration

• Exocytosis

• Facilitated Diffusion

Where does nearly all oxygen around us come from?

• Photosynthesis

• Cellular Respiration

• Exocytosis

• Diffusion

What process uses oxygen to break down food for energy?

• Photosynthesis

• Cellular Respiration

• Osmosis

• Endocytosis

T or F: Photosynthesis & cellular respiration are connected. One process produces substances that are needed to start the other process.

• True

• False