Unit 3 Retake Part 1

^{In a water molecule...}

Groups:

(a) the oxygen is

,

(b) the hydrogen is...

,

(c) the covalent bond is...

,

(d) the hydrogen bond is...

• partially positive

• partially negative

• a strong bond

• 
• within 1 water molecule

• a weak bond

Tags

NGSS.MS-PS1-1

In a water molecule, there are ​ (a)   hydrogen atoms and ​ (b)   oxygen atom.

• three
• two
• one

Tags

NGSS.MS-PS1-1

Label the atoms in the water molecule

a

b

Carbon

Nitrogen

Lipid

Phosphate

Hydrogen

Oxygen

Tags

NGSS.MS-PS1-1

Label the diagram of water

c

d

e

f

Oxygen Atom

Ionic Bond

Metallic Bond

Hydrogen Atom

Hydrogen Bond

Covalent 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

Label the image

a

b

c

d

Polar Phosphate Head

Hydrophobic Lipid Tail

Protein

Phospholipid

Molecule A has a higher concentration​ (a)   . If molecule A moves into the cell, this would be an example of​ (b)   .

• inside the cell
• outside the cell
• active transport
• passive transport

Tags

NGSS.HS-LS1-3

Molecule A has a lower concentration​ (a)   . If molecule A moves out of the cell, this would be an example of​ (b)   .

• inside the cell
• outside the cell
• active transport
• passive transport