Homeostasis

1. The illustration shows a process performed by a cell in order to maintain homeostasis.

• reproduction

• photosynthesis

• waste elimination

• taking in nutrients

Tags

NGSS.MS-LS1-2

The graph above shows change in levels of atmospheric carbon dioxide over time.

What might be one way to reverse this trend?

• plant more trees

• use more fossil fuels

• increase rates of deforestation

• human population increase

Tags

NGSS.MS-ESS3-4

All organisms require energy to carry out the processes that keep them alive. Which of the following is a process that animals use to obtain energy they need from food?

• chemosynthesis

• photosynthesis

• transpiration

• cellular respiration

Tags

NGSS.MS-LS1-7

What cannot happen to energy according to the Law of Conservation of Energy?

• energy cannot be created

• energy cannot be changed

• energy cannot be converted

• energy cannot be transformed

Tags

NGSS.MS-PS3-4

When you bend a glow stick, a small chamber inside breaks, releasing a substance that reacts with other substances inside the glow stick. The reaction that takes place causes the glow stick to glow. What energy transformation takes place when a glow stick is lit?

• sound energy --> light energy

• chemical energy --> light energy

• thermal energy --> light energy

• electrical energy --> light energy

Tags

NGSS.MS-PS3-5

Mark rubs his hands together quickly on a winter evening. Why does rubbing your hands together help warm them?

• heat is absorbed for the air by the hands

• heat is generated by mechanical energy being converted to heat energy

• heat is conducted between two hands when they are touching

• heat is transferred back and forth between two hands when they are close together

Tags

NGSS.MS-PS3-4

NGSS.MS-PS1-4

Rachel is making a table to summarize the movement of carbon dioxide in the carbon cycle. Which of the following should she NOT list as a process that returns carbon dioxide to the environment?

• cellular respiration

• decomposition

• combustion

• photosynthesis

Colin decided to investigate soil erosion by water. He measured rates of erosion on model hills made of soil, rock, and sand. What was the test (independent) variable?

• the rate of erosion on the hills

• the steepness of the model hillsides

• the amount of water sprayed onto the hills

• the type of material used to construct the model hills

Tags

NGSS.MS-ETS1-1

The diagram shows a red blood cell exchanging water with its environment.

How does this illustration show that the cell is maintaining homeostasis?

• the cell is gaining more water than it loses

• the cell is losing more water than it gains

• the cell is losing the same volume of water that it gains

• the cell is not allowing water to enter or leave the cell

Tags

NGSS.MS-LS1-2

During cellular respiration organisms obtain energy by breaking down food in the form of sugars. What are the products of cellular respiration?

• oxygen and water

• glucose and oxygen

• oxygen and carbon dioxide

• carbon dioxide and water

Tags

NGSS.MS-LS2-3