02.04 Membrane Transport
Cell Transport Lab Report
Instructions: There are two options for completing the lab. You can either complete the lab at home over the
course of three days or watch the teacher-led video and record your observations. Links to the hands-on lab
and video observation lab are on the assessment page.
Title: Membrane Transport
Objective(s): Observe functions of a cell membrane
Hypothesis: An egg will increase in size by allowing water to pass through the cell membrane
Variables:
Independent Variable: liquid in jar
Dependent Variable size of egg
Controlled Variable: time measure
Materials:
Raw egg
String or thread or yarn
Ruler
White vinegar
Tap water
Jar with lid (like a mayonnaise jar or something big enough to put the egg in)
Procedures:
1. Before beginning the experiment, record at least two observations of the raw egg in your lab report.
2. Wrap the string around the center of the egg to determine its initial circumference. Measure the
string and record the initial circumference in centimeters (cm).
3. Gently wrap the egg in the jar and completely cover the egg with vinegar. Use the lid to seal the jar
and note the time. This will be considered the "start time" of the experiment.
4. After approximately 24 hours from the start time, carefully remove the egg from the jar of vinegar. If
the shell has completely dissolved, exposing the inner membrane, move on to the next step. If not,
return the egg to the vinegar until the shell has completely dissolved.
5. Record at least two observations of the egg.
6. Measure and record the circumference of the egg, being sure to measure it in the same way every
time you measure circumference.
7. Pour out the vinegar and rinse the jar. Then fill the jar about half full of tap water.
This study source was downloaded by 100000858936669 from CourseHero.com on 01-17-2023 16:46:57 GMT -06:00
https://www.coursehero.com/file/113888639/0204-Membrane-Transport-Lab-Reportdocx/
Cell Transport Lab Report
Instructions: There are two options for completing the lab. You can either complete the lab at home over the
course of three days or watch the teacher-led video and record your observations. Links to the hands-on lab
and video observation lab are on the assessment page.
Title: Membrane Transport
Objective(s): Observe functions of a cell membrane
Hypothesis: An egg will increase in size by allowing water to pass through the cell membrane
Variables:
Independent Variable: liquid in jar
Dependent Variable size of egg
Controlled Variable: time measure
Materials:
Raw egg
String or thread or yarn
Ruler
White vinegar
Tap water
Jar with lid (like a mayonnaise jar or something big enough to put the egg in)
Procedures:
1. Before beginning the experiment, record at least two observations of the raw egg in your lab report.
2. Wrap the string around the center of the egg to determine its initial circumference. Measure the
string and record the initial circumference in centimeters (cm).
3. Gently wrap the egg in the jar and completely cover the egg with vinegar. Use the lid to seal the jar
and note the time. This will be considered the "start time" of the experiment.
4. After approximately 24 hours from the start time, carefully remove the egg from the jar of vinegar. If
the shell has completely dissolved, exposing the inner membrane, move on to the next step. If not,
return the egg to the vinegar until the shell has completely dissolved.
5. Record at least two observations of the egg.
6. Measure and record the circumference of the egg, being sure to measure it in the same way every
time you measure circumference.
7. Pour out the vinegar and rinse the jar. Then fill the jar about half full of tap water.
This study source was downloaded by 100000858936669 from CourseHero.com on 01-17-2023 16:46:57 GMT -06:00
https://www.coursehero.com/file/113888639/0204-Membrane-Transport-Lab-Reportdocx/
