Experiment 2: Concentration Gradients and Membrane
In this experiment, you will dialyze a solution of glucose and starch to observe:
The directional movement of glucose and starch.
The effect of a selectively permeable membrane on the diffusi
Experiment 2: Create a Cell
In this experiment, you will create an animal cell and a plant cell using household
items to observe the differences between the two cell types.
(1) 30 cm x 30 cm Aluminum Foil
(2) Resealable Bags (Cell Me
Experiment 1: Tonicity and the Animal Cell
In this experiment, you will explore the effects of osmosis on eggs. An egg is
surrounded by a permeable membrane and a hard shell. To observe the effects
of osmosis, the shell will first need to be removed.
Experiment 1: Fermentation by Yeast
Yeast cells produce ethanol, C2H6O, and carbon dioxide, CO2, during alcoholic
fermentation. In this experiment, you will measure the production of CO 2 to
determine the rate of fermentation in the presence of different
Experiment 2: Effect of
Temperature on Enzyme Activity
Yeast cells contain catalase, an enzyme that
helps convert hydrogen peroxide to water
and oxygen. This enzyme is very important
because hydrogen peroxide can be toxic to
cells if it accumulates (Figur
Experiment 2: Tonicity and the Plant Cell
Plant cells are able to generate osmotic pressure, while other types of cells
cannot. This is due to specialized plant structures such as the cell wall, which
prevents lysis caused by osmosis. By taking advantage
Table 2: Results from surface area to volume experiment
Surface Area (cm2)
1cm x 1cm x 6cm
2cm x 2cm x 2cm
1cm x 1cm x 1cm
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Distance of Diffusion
Experiment 1: Identifying Cell Structures
The structure of a cell dictates the majority of its function. You will view a
selection of slides that exhibit unique structures that contribute to tissue function.
Onion Root (Allium) Digital Slide Ima
Experiment 1: Diffusion through a Liquid
In this experiment, you will observe the effect that different molecular weights have
on the ability of dye to travel through a viscous medium.
1 60 mL Corn Syrup Bottle, C12H22O11
Red and Blue Dye Soluti
Experiment 1: Enzymes in Food
Amylase is an enzyme that facilitates digestion in humans. Specifically, it is an
enzyme that breaks down starch molecules into sugar molecules. This is why
people sometimes experience a sweet taste after sucking on a starch-
BIO 168 Final Exam Study Guide
1. How do negative feedback mechanisms function to help the body maintain homeostasis?
Negative feedback is where increase in a process results in another acting to bring it back to normal
2. Give two examples of positive fe
BIO 168 Exam 4 Study guide
1.What are fontanelles, and what purpose do they serve?
They are the soft tops on the top and back of a babys head that allow for deformation so they can slide
through the birth canal.
2. What does the axial skeleton consist of?
BIO 168 Exam 3 Study Guide
1. What type of bone is able to support weight and withstand tension stress?
2. What is yellow bone marrow largely composed of? The Build Up Of Fat over Time
3. In embryonic development, what type of tissue is the f
Nervous System Clinical Questions
ESSAY. Write your answer in the space provided or on a separate sheet of paper.
Mrs. Sagalov has recently been diagnosed with Alzheimer's disease. What clinical symptoms is
she likely to show, and what would prob
Osmosis and Diffusion Lab Report
The purpose of the lab was to determine how diffusion spreads particles of a substance
throughout a uniform solution and also to demonstrate how osmosis of a cell diffuses solvents in
and out of a selectively permeable mem
BIO 168 Exam 3 Study guide
1. What are the functions of the skeletal system?
2. What is the most abundant mineral in the human body?
3. How many bones are in the adult human skeleton?
4. Where is fat stored in the long bones?
5. What is an osteocyte?
Exam 2 Study Guide
1. Define the following terms
Cell the smallest living structure in the human body
Tissue a collection of specialized cells and cell products that perform a special function
Organ combinations of tissues that perform complex function
2015 September 24
Effect of Temperature on Enzyme Activity
Enzymes are catalysts that speed up the rate of reaction that happens in the cells. The activity of
enzyme is affected by change in pH and temperature. I