Docsity
Docsity

Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity


Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan


Guidelines and tips
Guidelines and tips

Name: Date: Gummy Bear Osmosis Lab #: ______ Purpose, Schemes and Mind Maps of Biochemistry

Selectively permeable means that some molecules can move through the membrane while others cannot. Movement through membranes is called transport. Diffusion and ...

Typology: Schemes and Mind Maps

2021/2022

Uploaded on 09/12/2022

freddye
freddye 🇺🇸

4.3

(11)

235 documents

1 / 4

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
Name: Date:
Gummy Bear Osmosis
Lab #: __________
Purpose: to investigate the movement of water into and out of a Gummy Bear
Problem: Where is the concentration of water molecules highest, tap water or salt water?
Background Information:
Molecules are in constant motion, and tend to move from areas of higher concentrations to
lesser concentrations. Diffusion is defined as the movement of molecules from an area of high
concentration to an area of low concentration. The diffusion of water molecules through a
selectively permeable membrane is known as OSMOSIS.
Selectively permeable means that some molecules can move through the membrane while
others cannot. Movement through membranes is called transport. Diffusion and osmosis are passive
forms of transport; this means that do not need energy to move areas of high concentration to areas
of low concentration. Active transport requires energy to transport molecules from low concentration
to high concentration.
Osmosis is the movement (transport) of water
(small dots) through a selectively permeable
membrane from an area of high concentration
to an area of low concentration.
Vocabulary: define the following terms
1. Concentration:
2. Diffusion:
3. Osmosis:
4. Membrane:
5. Selectively Permeable:
6. Transport:
7. Active Transport:
8. Passive Transport:
pf3
pf4

Partial preview of the text

Download Name: Date: Gummy Bear Osmosis Lab #: ______ Purpose and more Schemes and Mind Maps Biochemistry in PDF only on Docsity!

Name: Date: Gummy Bear Osmosis Lab #: __________ Purpose : to investigate the movement of water into and out of a Gummy Bear Problem: Where is the concentration of water molecules highest, tap water or salt water? Background Information: Molecules are in constant motion, and tend to move from areas of higher concentrations to lesser concentrations. Diffusion is defined as the movement of molecules from an area of high concentration to an area of low concentration. The diffusion of water molecules through a selectively permeable membrane is known as OSMOSIS. Selectively permeable means that some molecules can move through the membrane while others cannot. Movement through membranes is called transport. Diffusion and osmosis are passive forms of transport; this means that do not need energy to move areas of high concentration to areas of low concentration. Active transport requires energy to transport molecules from low concentration to high concentration. Osmosis is the movement (transport) of water (small dots) through a selectively permeable membrane from an area of high concentration to an area of low concentration. Vocabulary: define the following terms

**1. Concentration:

  1. Diffusion:
  2. Osmosis:
  3. Membrane:
  4. Selectively Permeable:
  5. Transport:
  6. Active Transport:
  7. Passive Transport:**

Answer the following predictions: QUESTION 1 : How will soaking gummy bears in tap water affect the size of the candy? Prediction: explain your prediction based on your knowledge and the background information QUESTION 2 : How will soaking gummy bears in salt water affect the size of the candy? Prediction: explain your prediction based on your knowledge and the background information Materials: 1 beaker with tap water 1 beaker with salt water Masking tape Marker Ruler Scale Wax paper Spoon Procedure: DAY 1

  1. Label each of the beakers with one group member’s name and class period.
  2. Choose one of the colored gummy bear to enter tap water and one to enter salt. Record which color will enter each solution in the data table on page 3
  3. Use the ruler to find the height & width of each bear. Record your results in the data table on page 3. Round your measurements to the nearest tenth
  4. Use the scale to weigh each gummy bear. Record your results in the data table under on page 3. Round your answers to the nearest tenth.
  5. Record any other qualitative observations about the gummy bear in the data table on page
  6. Place one gummy bear into the tap water and the other gummy bear into salt water. Let them sit over night.
  1. What happened to the bear after soaking it in tap water overnight? Why?
  2. What happened to the bear after soaking it in salt water overnight? Why?
  3. What do you think would happen to the salt water bear if it was placed back into tap water overnight? Why?
  4. Write a short paragraph (about 5 sentences) to explain the results of this investigation using the concept of osmosis. Include specific data to support what you say.