Question

Which statement best describes the difference in how water and glucose can move across a plasma membrane?
Water enters and leaves by osmosis and glucose enters and leaves by simple diffusion.
Both water and glucose enter and leave by active transport.
Water enters and leaves by osmosis, while glucose requires facilitated diffusion or active transport.

Answer 1

This will help: http://www.rsc.org/Education/Teachers/Resources/cfb/cells.htm

Answer 2

i couldn't understand this one i couldn't find it...

Answer 3

Oh, okay. What is Osmosis?

Answer 4

not one clue... I've been so far behind on biology...

Answer 5

"Osmosis is the spontaneous net movement of solvent molecules through a partially permeable membrane into a region of higher solute concentration, in the direction that tends to equalize the solute concentrations on the two sides."

Answer 6

Now, does water travel through Osmosis? Yes or No

Answer 7

uhhh yes... I'm stupid sorry /.\

Answer 8

It's fine! That's why people come on here, to get help! :D
Now that it does, what answer is wrong? B

Answer 9

is the answer c? thats what i think it may be..

Answer 10

Yes it is

Answer 11

Good job! :D

Answer 12

:O oh my i got it right /.\ your a freaking miracle worker lol

Answer 13

I know, that's why I'm the "geneius" (Gene-ius get it? XD)

Answer 14

lol yeah /.\ if you don't mind how old are you?

Answer 15

I am 14 years old and in Bio Honors

Answer 16

OMG....

Answer 17

your younger than me...

Answer 18

i have one more question though then the others i think i know..

Answer 19

Well we can all still learn, like I never took chemistry.... or physical science.. :/

Answer 20

Okay go ahead, ask away!

Answer 21

http://takeexam.next.ecollege.com/CurrentCourse/ion%20movement%20TYK%20question.jpg

thats the diagram photo up there ^

The diagram shows sodium ions and potassium ions moving against their concentration gradients to cross the plasma membrane. Which statement best describes how this movement is possible?
The ions move across the semipermeable membrane through simple diffusion.
ATP provides the energy required to move the ions across the plasma membrane by active transport.
Water moves across the plasma membrane by osmosis and carries the ions with it.

Answer 22

this is what i think the answer is. b?

Answer 23

Is it passive transport? And the image doesn't work :(

Answer 24

uh i don't know /.\

Answer 25

Well, see if this helps: http://www.biology4kids.com/files/cell2_passivetran.html

Answer 26

so it is b? i don't know i read that link you sent... i still think its b

Answer 27

I think so too but I also think it may be A

Answer 28

So go with B I guess, I really don't know this one too well.

Answer 29

it was right lol

Answer 30

Do you want to fan me so I can give you more help in the future?

Answer 31

already fanned you lol

Answer 32

the first time you answered for me i fanned you

Answer 33

lol Ok