___ is the maintenance of an internal balance of conditions in a changing external environment.

• Diffusion

• Endocytosis

• Passive transport

• Homeostasis

What are four things that cells can do to maintain homeostasis?

• make new cells

• exchange materials

• rest

• eliminate wastes

• obtain and use energy

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-7

Molecules move in and out of a cell by diffusion. The picture shows a cell and molecules both inside and outside the cell. How will the molecules in this illustration move as a result of diffusion?

• into the cell

• out of the cell

• into another cell

• to the external environment

Tags

NGSS.MS-LS1-2

Cells must be able to perform certain functions in order to survive. Which of the following must all cells do to survive?

• obtain energy

• absorb wastes

• utilize oxygen

• continue growing

Tags

NGSS.MS-LS1-6

Even when it is cold outside, the human body maintains an internal temperature of 37 degrees Celsius. Which term describes the maintenance of a stable internal condition?

• endocytosis

• homeostasis

• mitosis

• photosynthesis

Cell membranes are semi-permeable because they allow only certain particles to cross into or out of the cell.

• True

• False

Tags

NGSS.MS-LS1-2

The movement of particles across a cell membrane without the use of energy by the cell is called?

• Active Transport

• Passive Transport

• Endocytosis

• Exocytosis

______ is the movement of molecules from high concentrations to low concentrations.

• Diffusion

• Endocytosis

• Exocytosis

• Osmosis

When particles are enclosed in a vesicle and released from a cell, the process is called _____?

• diffusion

• endocytosis

• exocytosis

• osmosis

_____ is the diffusion of water through a semi-permeable membrane.

• Diffusion

• Endocytosis

• Exocytosis

• Osmosis