Solved by Expert Tutors
Solved by Expert Tutors
Question

please help me!Osmosis LabThe Cell Membrane

  • Cells are surrounded by a lipid bilayer, which is a semi-permeable membrane. 
  • Semi-permeable means that only small molecules, like water and oxygen, can pass into and out of the cell.
  • The cell membrane protects the cell from the outside environment.
  • It also keeps the cell's organelles, ions, proteins, and water inside so the cell can stay healthy and alive




Osmosis and Equilibrium

  • When there are an unequal number of molecules inside and outside the cell, the concentration difference causes water to move across the membrane.
  • Water molecules move from an area of low concentration to a high concentration, until the concentrations are equal.
  • Water stops moving when there is equilibrium, or the same concentration, on both sides of the cell membrane.


                Equal                                        Unequal






***Osmosis is the passive transport of water, across a semi-permeable membrane.








****Diffusion is the movement of molecules from a high concentration to a low concentration.


So What's the Difference?






Gummy Bear Chemistry


Materials:


Gummy Bears (Black Forest work best)

1 c. of water

1 c. of salt water

1 c. of vinegar

1 c. of water with baking soda

1 c. of sugar water

Ruler


Procedure:


  1. Fill 4 c. with room temperature water - enough to cover gummy bears
  2. In 1 c. leave just water
  3. In 2nd c. stir in 1 Tbls. of salt
  4. In 3rd c. stir in 1 Tbls. of sugar
  5. In 4th c. stir in 1 Tbls. of baking soda
  6. In 5th c. add vinegar to cover gummy bear
  7. Measure the length, width and note color of each gummy bear.
  8. Record this data
  9. Place 1 gummy bear in each cup. 
  10. Wait 12-48 hours
  11. Record observations




Gummy Bear Osmosis Worksheet


QuestionWhat is the question you want to research?


HypothesisWhat are you changing and what do you expect to change?


Create 2 hypotheses:  You can pick one water mixture and use the vinegar cup as your other hypothesis.


Materials:

List the materials you used below








Procedure:

A numbered, step by step list of short instructions of how to perform the experiment, written in the third person, such that another student could follow and replicate the experiment, then identify the variables in your experiment:


  1.  
  2.  
  3.  
  4.   
  5.  
  6.  
  7.  

Independent Variable:

Dependent Variable:






Results: Here you list the results of your experiment. Include any relevant charts, data tables, and graphs.



Data Table:

Before



Substance

Length

(cm)

Width

(cm)

Color

Water




Salt




Baking Soda




Sugar




Vinegar





After


Substance

Length

(cm)

Width

(cm)

Time

(hours)

Water



16

Salt



16

Baking Soda



16

Sugar



16

Vinegar



16




Discussion


Restate the hypotheses (both of them) and discuss whether they were correct or not.  Discuss the results found with each gummy from the chart. 


Going further

  1. What is a hypotonic solution? Which gummy bear demonstrated this and why?
  2. What is an isotonic solution? Which gummy bear demonstrated this and why?
  3. What is a hypertonic solution? Which gummy bear demonstrated this and why?
  4. What happened with the salt solution and why?

Step-by-step answer

or nec facilisis. Pellentesque dapibus efficitur laoreet.acinia pulvi

ac, dictum vitae odio. Donec aliquet. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam lacinia pulvinar tortor nec facilisis. Pellentesque dapibus efficitur laoreet. Nam risus ante, dapibus a molestie consequat, ultrice

et, consectetur adipiscing elit. Nam lacinia pulvinar tortor nec facilisis. Pellentesque dapibus efficitur laoreet. Nam risus ante, dapibus a molestie consequat, ultrices ac magna. Fusce dui lectus, congue vel laor


ce dui lm ipsum

ec aliquet. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam lacinia pulvinar tor

ur laoreetllensqu

entesque dapibus efficitur laoreet. Nam risus ante, dapibus a molestie consequat, ultrices ac magna. Fusce dui lectus, congue vel laoreet ac, dictum vitae odio

a. Fusce dui lectus, congue vel laoreet ac, dictum vitae odio. Donec aliqu

pulvinar tortor nec facilisis. Pellentesque dapibus efficitur laoreet. Nam risus ante, d

ng elit. N

  • consectetu
  • ffici
  • tesque
  • amet, conse
  • m risus ante, d
  • rem ipsum
  • risu
  • ur l

tesque dap

  1. s a molestie consequat, ultrices ac magna. Fusce dui lectus, congue vel laoreet ac, dictum vitae
  2. ongue vel laoreet ac, dictum vitae odio. Donec aliquet. Lo
  3. susamnec facilisis. Pellentesque da
  4. m rixpulvinar tortor nec facilisis. P
  5. icsiscing elit. Nam lacinia pulvinar tortor
  6. uscesng elit. Nam lacinia pulvinar tortor
  7. entesque dapibus efficitur laor
  8. Fusce dui lectus, congue vel laoreet ac, dictum vitae odio.
  9. sus ante, dapibu
  10. dictum vitae odio. Donec aliq
  11. acinia pulvinar t

acinia pulvinar tortor nec facilisis. Pellentesque dapibus efficitur laoreet. Nam risus ante, dapibus a molestie consequa

sque dapibus efficitur laoreet. Nam risus ante, dapibus a

Gunny bear_experiment_results.PNG


ongue vel

rem ipsum dolor sit amet, consectetur adipiscing elit. Nam lacinia pulvinar tortor nec facilisis. Pellentesque dapibus efficitur laoreet. Nam risus ante, dapibus a molestie consequat, ultrices ac magna. Fusce dui lectus, cong

et, consectetur adipiscing elit. Nam lacinia pulvinar tortor nec facilisis. Pellentesque dapibus efficitur laoreet. Nam risus ante, dapibus a molestie

gue

a molestie consequat, ultrices ac magna. Fusce dui lectus, congue vel laoreet ac, dictum vitae odio. Donec aliquet. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam lacinia pulvinar tortor nec facilisis. Pellentesque dapibus efficitur laoreet. Nam risus ante, dapibus a molestie consequat, ultrices ac m


tesque dapibus efficitur laoreet. Nam risus ante, dapibus a molestie consequat, ultrices ac magna. Fusce dui lectus, congue vel laoreet ac, dictum vitae odio. Donec aliquet. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam lacinia pulvinar tortor nec facilisis. Pellentesque dapibus efficitur laoreet. Nam risus ante, dapibus a molestie consequat, ultrices ac magna


, ultrices ac magna. Fusce dui lectus, congue vel laoreet ac, dictum vitae odio. Donec aliquet. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam lacinia pulvinar tortor nec facilisis. Pellentesque dapibus efficitur laoreet. Nam risus ante, dapibus a molestie consequat, ultrices ac magna. Fusce dui lectus, congue ve


m risus ante, dapibus a molestie consequat, ultrices ac magna. Fusce dui lectus, congue vel laoreet ac, dictum vitae odio. Donec aliquet. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam lacinia pulvinar tortor nec facilisis. Pellentesque dapibus efficitur laoreet. Nam risus ante, dapibus a molestie consequat, ultrices ac magna.


lestie consequat, ultrices ac magna. Fusce dui lectus, congue vel laoreet ac, dictum vitae odio. Donec aliquet. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam lacinia pulvinar tortor nec facilisis. Pellentesque dapibus efficitu


ctum vitae odio. Donec aliquet. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam lacinia pulvinar tortor nec facilisis. Pellentesque dapibus efficitur laoreet. Nam risus ante, dapibus a molestie consequat, ultrices ac magna. Fusce dui lectus, congue vel laoreet ac, dictum vitae odio. Donec aliquet. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam lacinia pulvinar tortor nec facilisis. Pellentesque dapi

a molestie consequat, ultrices ac magna. Fusce dui lectus, congue vel laoreet ac, dictum vitae odio. Donec aliquet. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam lacinia pulvinar tortor nec facilisis. Pellentesque dapibus efficitur

dictum vitae odio. Donec aliquet. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam lacinia pulvinar tortor nec facilisis. Pellentesque dapibus efficitur laoreet. Nam risus ante, dapibus a molestie consequat, ultrices ac magna. Fusce dui lectus, congue vel laoreet ac, dictum vitae odio. Donec aliquet. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam lacinia pu

cing elit. Nam lacinia pulvinar tortor nec facilisis. Pellentesque dapibus efficitur laoreet. Nam risus ante, dapibus a molestie consequat, ultrices ac magna. Fusce dui lectus, congue vel laoreet ac, dictum vitae odio. Donec aliquet. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam lacinia pulvinar tortor nec facilisis. Pellentesque dapibus efficitur laoreet. Nam r

ur laoreet. Nam risus ante, dapibu

risus ante, dapibus a molestie consequat, ultrices ac magna. Fusce dui lectus, congue vel laoreet ac, dictum vitae odio. Donec aliquet. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam lacinia pulvinar tortor nec facilisis. Pellentesque dapibus efficitur laoreet. Nam

llentesque dapibus efficitur laoreet. Nam risus ante, dapibus a molestie consequat, ultrices ac magna. Fusce dui lectus, congue vel laoreet ac, dictum vitae odio. Donec aliquet. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam lacinia pulvinar tortor nec facilisis.

lestie consequat, ultrices ac magna. Fusce dui lectus, congue vel laoreet ac, dictum vitae odio. Donec aliquet. Lorem ipsum dolor sit amet, consectetur adipiscin


m ipsum dolor sit amet, consectetur adipiscing elit.

Gunny bear_experiment_results.PNG
r

Subscribe to view the full answer

Subject: Biology, Science

Why Join Course Hero?

Course Hero has all the homework and study help you need to succeed! We’ve got course-specific notes, study guides, and practice tests along with expert tutors.

  • -

    Study Documents

    Find the best study resources around, tagged to your specific courses. Share your own to gain free Course Hero access.

    Browse Documents
  • -

    Question & Answers

    Get one-on-one homework help from our expert tutors—available online 24/7. Ask your own questions or browse existing Q&A threads. Satisfaction guaranteed!

    Ask a Question
Let our 24/7 Biology tutors help you get unstuck! Ask your first question.
A+ icon
Ask Expert Tutors You can ask You can ask You can ask (will expire )
Answers in as fast as 15 minutes