Unit 2 Review - Biology

The cell membrane can separate the inside of the cell from the outside because of its phospholipids, which are

• hydrophilic on both sides
• hydrophobic on both sides
• hydrophilic on one side and hydrophobic on the other

Tags

NGSS.MS-LS1-2

Passive transport ​ (a)   require energy because it moves ​ (b)   the concentration gradient, from ​ (c)   .

• does NOT
• does
• with
• against
• high to low
• low to high

What is the correct description of the transport in the image?

• small molecules crossing the lipid bilayer (diffusion)

• large molecules crossing through a protein (facilitated diffusion)

• many molecules coming into the cell using a membrane vesicle (endocytosis)

• many molecules coming out of the cell using a vesicle to fuse with the membrane (exocytosis)

Facilitated diffusion and protein pumps are similar because

• They both require energy to function
• They both move molecules from high to low concentration
• They both involve the movement of molecules through proteins

• They both can only move molecules in one direction

Using the image, choose the correct form of transport and explanation of how you know:

• Active transport, because the molecules are crossing the membrane using a protein

• Passive transport because the molecules are crossing the membrane using a protein

• Active transport because the molecules are moving from low to high concentration

• Passive transport because the molecules are moving from high to low concentration

Tags

NGSS.MS-LS1-2

Organize these options into the right type of transport:

Groups:

(a) Passive Transport

,

(b) Active Transport

• molecules move AGAINST the gradient

• requires energy

• does NOT require energy

• molecules move from low concentration to high

• molecules move from high concentration to low

• molecules move WITH the gradient

Which TWO of the following can be used to identify ACTIVE transport?

• Movement of molecules from high to low concentration
• Movement of molecules from low to high concentration
• Does not require energy
• Requires energy (ATP!)

Using this image, what organelle is C?

• Cell Wall
• Mitochondria
• Large Cell Vacuole
• Chloroplast

Tags

NGSS.MS-LS1-2

What cell part is NOT found in all cells?

• Cell Wall
• Cell Membrane
• Cytoplasm
• Genetic Material

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-1

All of these statements are part of cell theory, EXCEPT

• All living things are composed of cells

• Cells are the basic unit of structure and function

• New cells come from existing cells

• Cells are really small

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-1

NGSS.MS-LS1-3