Homeostasis and Cell Processes

___ 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-LS1-7

NGSS.MS-LS1-3

Organisms can respond to changes in their environment in order to maintain a balance, called homeostasis. What does a tree do to maintain homeostasis during the winter months?

• shivers

• hibernates

• absorbs sun

• loses leaves

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

Tags

NGSS.MS-LS1-2

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

• Diffusion

• Endocytosis

• Exocytosis

• Osmosis

The movement of materials across the cell membrane from areas of low concentration into areas of higher concentration and requires the cell to use energy.

• Passive Transport

• Active Transport

• Osmosis

• Diffusion