Login

Search the forums now!

Welcome, Guest. Please login or register.

April 24, 2026, 09:36:51 pm
Pages: 1 [2]   Go Down

Author Topic: Biology First Sac (Help)  (Read 7506 times)  Share 

0 Members and 1 Guest are viewing this topic.

Photon

  • Trendsetter
  • **
  • Posts: 152
  • Respect: 0
Re: Biology First Sac (Help)
« Reply #15 on: February 12, 2016, 07:17:38 pm »
0
Lol my first prac sac is coming up as well. If anyone knows anything bout the Beetroot and Detergent prac (Osmosis, diffusion...etc) can you please tell me what I can do to prepare?
Logged
2016: | Biology | Extended Investigation |
2017: | English | Chemistry | Physics | Methods | Specialists |

Syndicate

  • Forum Leader
  • ****
  • Posts: 797
  • Hard work beats Talent
  • Respect: +139
Re: Biology First Sac (Help)
« Reply #16 on: February 12, 2016, 07:25:26 pm »
0
Quote from: Photon on February 12, 2016, 07:17:38 pm
Lol my first prac sac is coming up as well. If anyone knows anything bout the Beetroot and Detergent prac (Osmosis, diffusion...etc) can you please tell me what I can do to prepare?

I dont think you can really prepare for the SAC, other than reading over the method I guess.

I just had a similar practical regarding diffusion, where I had to find the rate of diffusion with different SA:V.
« Last Edit: February 12, 2016, 09:26:54 pm by Syndicate »
Logged
2017: Chemistry | Physics | English | Specialist Mathematics | Mathematics Methods
2018-2020 : Bachelor of Biomedicine at University of Melbourne

Physics Guide 2017

@#035;3

  • Victorian
  • Forum Regular
  • **
  • Posts: 80
  • Respect: 0
Re: Biology First Sac (Help)
« Reply #17 on: February 12, 2016, 09:06:45 pm »
0
Hi guys! I had a prac on Osmosis with de-shelled eggs.
One beaker was filled with salt solution and the other with distilled water.
Can someone please help me with the wording of this question?
thanks in advance!

Explain why the mass of the egg left in salt solution has changed. What is the role of the egg membrane in this change?
I said: The mass of the egg in the salt solution has changed due to the salt solution being hypertonic relative to the egg. Water moves out of the egg via osmosis across the partially permeable membrane until equilibrium is achieved. The role of the egg membrane is so equilibrium is achieved.
Logged
Pages: 1 [2]   Go Up