Open Scied Cells and Systems

Rico, a scuba diver, uses breathing gear to help him breathe air underwater. He always gets enough sleep and eats a good breakfast before a dive. What could happen if his breathing gear broke during a dive and he could not breathe as much air as usual?

• It would be difficult to swim, because his cells cannot work without molecules from air.

• It would not affect him because his cells are getting the different types of molecules they need from food to work properly.

• It would not affect him as long as he slept enough.

• It would not affect him because his body can function normally even if his cells do not have molecules from air.

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-3

NGSS.MS-LS1-5

The test report above shows the level of molecules in different parts of the patient's body. What does this test indicate about how her body systems are working?

• Her body systems are working properly.

• Her digestive system is not combining molecules together.

• Her digestive system is not breaking down molecules from food.

• Her respiratory system is not breaking down molecules from air.

Tags

NGSS.MS-LS1-3

NGSS.MS-LS2-1

Lucille is finding it difficult to play soccer after school. Her doctor thinks that her cells might not be getting enough oxygen. When Lucille talked about it with a friend, her friend said there might be a problem with Lucille’s respiratory system or circulatory system. What needs to enter into Lucille’s cells in order for her body to function properly? (Check all that apply)

• carbon dioxide

• proteins

• oxygen

• glucose

Tags

NGSS.MS-LS1-7

Lucille is finding it difficult to play soccer after school. Her doctor thinks that her cells might not be getting enough oxygen. When Lucille talked about it with a friend, her friend said there might be a problem with Lucille’s respiratory system or circulatory system. How might a problem with Lucille’s respiratory system or circulatory system make it difficult for Lucille to play soccer?

• They might not be bringing in enough oxygen from the air. It’s hard to play soccer if you don’t have enough oxygen in your cells.

• They might not be breaking down starch to make glucose. It is hard to play soccer if you don't have enough glucose in your cells.

• They might not be taking water and proteins to all of the cells in the body. It is hard to play soccer if all of the cells don't have what they need.

Tags

NGSS.MS-LS1-3

Ezra eats a cheese sandwich for lunch. Cheese contains a lot of protein, and bread is mostly starch. Ezra plans to play basketball later in the afternoon. He is breathing normally. What does Ezra need from the food he ate and the air he breathes so that he can play basketball?

• Ezra's cells need carbon dioxide and water from the air and food in order for him to play basketball.

• Ezra's cells need carbon dioxide from the air and water, proteins, and starch from his food in order for him to play basketball.

• Ezra’s cells need oxygen from air and glucose from the starch in his food in order for him to be able to play basketball

Tags

NGSS.MS-LS1-7

How do Ezra’s body systems work together to get the molecules he needs into his cells? Select all that apply.

• Ezra's respiratory system takes in oxygen from the air.

• Ezra's digestive system breaks down starch in foods into glucose molecules.

• Ezra's circulatory system takes the glucose and oxygen to all of the cells in his body.

Answer explanation

Tags

NGSS.MS-LS1-3

A patient has been eating healthy foods, but his digestive system is not doing what it usually does. Can this patient still exercise normally?

• Yes, as long as he can still breathe, his cells will have all the molecules they need to release energy.

• No, his digestive system is not breaking down oxygen into molecules small enough to get inside his cells.

• No, molecules from food are not combining together to be large enough for his cells to use.

• No, molecules from food are not getting broken down small enough to get inside his cells.

Tags

NGSS.MS-LS1-3

NGSS.MS-LS1-7

the body system that transports molecules to and from all cells of the body

• oxygen

• respiratory system

• digestive system

• circulatory system

the body system that takes in food and breaks it down

• stomach

• circulatory system

• digestive system

• respiratory system

Tags

NGSS.MS-LS1-7

The job of the respiratory system is to...

• take in oxygen and release carbon dioxide

• take in food and break it down

• transport molecules to and from all cells of the body

• make things move or change