Homeostasis and Cellular Transport Concepts

What is the approximate internal temperature the human body tries to maintain through homeostasis?

• 32°F

• 72°F

• 98.5°F

• 100°F

What is homeostasis?

• A set of external conditions that change with the environment.

• A set of internal conditions maintained by living things despite a changing environment.

• A process of energy production within cells.

• The growth and development of an organism.

What happens if cells are out of balance regarding homeostasis?

• They will grow larger and stronger.

• They will not be able to carry out necessary chemical reactions.

• They will divide rapidly to correct the imbalance.

• They will become dormant until conditions improve.

Tags

NGSS.HS-LS1-3

In a state of homeostasis, how does water typically move in and out of a cell?

• More water flows into the cell than out.

• More water flows out of the cell than in.

• An equal amount of water flows into and out of the cell.

• Water only flows out of the cell.

Tags

NGSS.HS-LS1-3

What can happen to animal cells if too much water rushes into them due to an imbalance?

• They will shrink.

• They can burst.

• They will become rigid.

• They will multiply rapidly.

Besides water balance, what other internal conditions are maintained by homeostasis in cells?

• Light and sound levels.

• Temperature and pressure.

• Concentrations of salt, sugar, and pH.

• Oxygen and carbon dioxide levels only.

Tags

NGSS.MS-LS1-3

Which organelle is primarily responsible for maintaining homeostasis in cells?

• The nucleus

• The mitochondria

• The cell membrane

• The ribosomes

How does the cell membrane contribute to homeostasis?

• By producing energy for the cell.

• By storing genetic material.

• By regulating the movement of materials into and out of the cell.

• By synthesizing proteins for cell growth.

Tags

NGSS.MS-LS1-2

What is osmosis?

• The movement of solutes from an area of high concentration to low concentration.

• The movement of water from an area of low water concentration to high water concentration.

• The movement of water from an area of high water concentration to low water concentration.

• The active transport of ions across a membrane.

Osmosis is an example of what type of transport?

• Active transport

• Facilitated diffusion

• Passive transport

• Endocytosis