True or False: Cells can only use molecules that are small enough to enter a cell.

• True

• False

Which body system brings in oxygen molecules from the air?

• Digestive

• Circulatory

• Respiratory

Which body system brings in food and breaks it down into smaller molecules, such as glucose and amino acids?

• Digstive

• Circulatory

• Respiratory

Tags

NGSS.MS-LS1-7

Which body system transports glucose, oxygen, and amino acid molecules to every cell in the body?

• Digestive

• Circulatory

• Respiratory

What are amino acids?

• a molecule made of carbon and oxygen atoms

• molecules that are the building blocks of proteins

• a molecule that organisms can use to release energy, and that is made of carbon, hydrogen, and oxygen atoms

• a molecule that organisms get from the air or water around them and use to release energy

Tags

NGSS.MS-LS1-7

What is oxygen?

• a molecule made of carbon and oxygen atoms

• molecules that are the building blocks of proteins

• a molecule that organisms can use to release energy, and that is made of carbon, hydrogen, and oxygen atoms

• a molecule that organisms get from the air or water around them and use to release energy

Tags

NGSS.MS-PS1-1

What is glucose?

• a molecule made of carbon and oxygen atoms

• molecules that are the building blocks of proteins

• a molecule that organisms can use to release energy, and that is made of carbon, hydrogen, and oxygen atoms

• a molecule that organisms get from the air or water around them and use to release energy

Tags

NGSS.MS-LS1-7

NGSS.MS-PS1-1

What is carbon dioxide?

• a molecule made of carbon and oxygen atoms

• molecules that are the building blocks of proteins

• a molecule that organisms can use to release energy, and that is made of carbon, hydrogen, and oxygen atoms

• a molecule that organisms get from the air or water around them and use to release energy

Tags

NGSS.MS-PS1-1

Which of the following is a scientific argument?

• a proposed answer to a question about the natural world

• information about the natural world that is used to support or go against (refute) a claim

• the process of making clear how your evidence supports your claim

• a claim supported by evidence

Tags

NGSS.HS-LS4-2

Which of the following is a claim?

• a proposed answer to a question about the natural world

• information about the natural world that is used to support or go against (refute) a claim

• the process of making clear how your evidence supports your claim

• a claim supported by evidence