Unit 3 Retake Part 1

^{Which correctly describes the structure of water?}

• 1 hydrogen and 2 oxygen

• 2 oxygen and 1 hydrogen

• 1 carbon and 2 hydrogen

• 1 oxygen and 2 hydrogen

Tags

NGSS.MS-PS1-1

In a water molecule the oxygen has a

• negative charge

• positive charge

• neutral charge

• polar charge

Tags

NGSS.MS-PS1-1

In a water molecule the hydrogen has a

• negative charge

• positive charge

• neutral charge

• polar charge

Tags

NGSS.MS-PS1-1

The strong bond that holds 1 water molecule together is the

• Covalent Bond

• Hydrogen Bond

• Ionic Bond

• Metallic Bond

The weak bond that connects 2 water molecules is the

• Covalent Bond

• Hydrogen Bond

• Ionic Bond

• Metallic Bond

What does semi-permeable or selectively permeable mean?

• Lets all things in and out

• Lets some things in and out

• Lets nothing in but some out

• Lets some things in and nothing out

The phosphate head is hydrophilic. This means...

• It's POLAR and can mix with water

• It's POLAR and can NOT mix with water

• It's NONPOLAR and can mix with water

• It's NONPOLAR and can NOT mix with water

This part of the phospholipid is HYDROPHOBIC and does not mix with water.

• Phosphate Head

• Fatty Acid Tail

• Cytoplasm

• Glucose

In the image, what is the part marked with "?"

• Phosphate Head

• Phospholipid

• Protein

• Lipid Tail

In the image, what is the part marked with "?"

• Phosphate Head

• Phospholipid

• Protein

• Lipid Tail