Select all parts of the cell theory. (select multiple answers)

• cells come from other cells

• all life is composed of cells

• every cell has a nucleus

• cells are the basic unit of organization for living things

• all cells have mitochondria

Tags

NGSS.MS-LS1-1

an unidentified cell under a microscope contains a nucleus. you know that this cannot be an example of this type of cell because of this.

• prokaryotic cell

• eukaryotic cell

• plant cell

• animal cell

what do plant cells contain that animal cells do not? (select all that apply)

• chloroplast

• mitochondrion

• cell wall

• cell membrane

• large, central vacuole

Tags

NGSS.HS-LS1-5

what are the yellow circles on the diagram made out of and how do they react to water?

• phosphate heads, hydrophilic

• phosphate heads, hydrophobic

• lipid tails, hydrophobic

• lipid tails, hydrophilic

Tags

NGSS.MS-LS1-2

the blue segments of this diagram are used for all of the following (select all that apply)

• facilitated diffusion

• active transport

• simple diffusion

• osmosis

Tags

NGSS.MS-LS1-2

this diagram is an example of

• simple diffusion

• facilitated diffusion

• active transport

• osmosis

Tags

NGSS.MS-LS1-2

the sodium-potassium pumps in animal cells pump potassium into the cell from an area of low concentration to an area of higher concentration. this is an example of

• active transport

• facilitated diffusion

• simple diffusion

• osmosis

the environment that the middle cell is in would be classified as

• hypertonic

• hypotonic

• isotonic

• all of these

• none of these

Tags

NGSS.HS-LS1-3

if a cell with 20% sodium is placed into a solution with 25% sodium. the solution is said to be ____________. (hint: which direction is the water going to move)

• hypertonic

• hypotonic

• isotonic

• impossible to tell

the fatty acid tails that make up the interior of the cell membrane are hydrophobic because

• the bonds are non-polar so they won't be attracted to the polar water molecules

• the bonds are polar so they won't be attracted to the non-polar water molecules