Course title

Pre-requisite

Course description

Name of course: Honors Biology Semester 1 and 2

Duration of study: one year Textbook title and
(full year; one semester; trimester) copyright date: FLVS 2017

Approximately how many hours per week do students spend conducting hands-on laboratory experiments in this course?

2 hours

Please provide a list of the laboratory experiments or projects you do that require manipulation of equipment.

Virtual Microscopy Activity- To compare the structure and function of four types of microscopes.
Properties of Water- To design and conduct an experiment that examines one of the water’s properties.
Cell Transport Lab- To observe the process of osmosis and endosymbiotic theory.
Cellular structure and function interactive acitivity- to describe the internal structures of eukaryotic cells and summarize the functions.
Cell Division Virtual Lab activity- cell division through an onion root tip and Binary fission.
Mendel lab – To observe what traits people have; dominant or recessive.
Virtual Fieldtrip Biosphere; water Ecosystem – To look at three of our unique aquatic biomes to learn abiotic and biotic factors.
Population Dynamics virtual lab activity – To investigate how predation; birth rates; and death rates influence the killer whale and seal populations within their marine ecosystem.
Natural Selection Lab – To see how a population changes based on natural selection. Hardy-Weinberg Frequencies
Primate Evolution Virtual Lab – Comparing features of a newly discovered fossil skull to those of known species. Molecular Clocks
Classification project – categorize a group of animals by two forms of classification;phylogeny.
Dichotomous Key Lab activity – identify bryophytes; pteridophytes; gymnosperms; and angiosperms. Describe characteristics and classification of the four main plant divisions.

List all lab equipment used; including but not limited to household items (for example; microscope; beakers; ramps; dissection equipment; etc.)

Virtual Microscopy Lab- Guided Notes Activity sheet and virtual program
Properties of Water – 4 substances of your choice
Cell Transport Lab- Raw egg; string; ruler; white vinegar; tap water; jar w/lid
Cell Division Virtual Lab activity – lab program virtual onion root
Mendel lab – 20 people to survey; computer for data collection
Virtual Field trip water Ecosystem – access to the web
Populations Dynamics Virtual lab – computer and lab report printout
Natural Selection lab – 5 different colors of paper cut into 1cm x 1cm squares; multi colored fabric; 1 or 2 partners
Primate Virtual Lab – skulls; and virtual calipers to measure the skull
Classification project – chart and handouts provided
Dichotomous key lab activity – four plant types; dichotomous key; lab activity form

Using standard Scientific Method outlined by the following questions; describe one typical laboratory assignment associated with this course.
State the problem or concept investigated during this laboratory assignment. (Do oranges stored in a refrigerator have more Vitamin C than oranges picked fresh from a tree?) Formulate a hypothesis for this problem using “if/then” statements. (If oranges picked fresh from a tree have more Vitamin C; then juice from these oranges will take longer to turn a starch solution blue.)
How are cells affected by the movement of water?
Hypothesis: If the egg is soaked in vinegar for 24hrs and water for 48 hours then the egg will get bigger in size because the egg will absorb a small portion of the water.

Describe the experiment you performed to prove or disprove your hypothesis. List all essential materials. Describe each step you performed in the experiment.

Materials: Raw egg; string; ruler; white vinegar; tap water; jar w/lid

Procedures:
Before beginning the experiment; record at least two observations of the raw egg in your lab report.
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).
Gently place 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.
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.
Record at least two observations of the egg.
Measure and record the circumference of the egg; being sure to measure it in the same way every time you measure circumference.
Pour out the vinegar and rinse the jar. Then fill the jar about half full of tap water.
Gently place the egg back into the jar; making sure it is completely covered with water. Use the lid to seal the jar.
After a total of 48 hours from the start time; carefully remove the egg from the jar of water.
Make two observations of the raw egg; and measure and record the circumference.
Gently place the egg back into the jar; making sure it is completely covered with water. Use the lid to seal the jar.
After a total of 72 hours from the start time; carefully remove the egg from the jar of water.
Make two observations of the raw egg; and measure and record the circumference.
Describe the results of your experiment or study. Use graphs and charts where appropriate.
DATA & OBSERVATIONS

Time (hours) Observations Circumference
0 Hours 1. Golden Brown
2. Glossy; Smooth 17.4 cm
24 Hours 1. Discolored Pastie
2. Rough 17.4 cm
48 Hours 1. Enlarged
2. Flat colorization 18 cm
72 Hours 1. Taking on a different rounded shape
2. Grainy white and brown color 18.5 cm

Explain your data or results. Give an analysis of your experiment.

The resulting data shows that the circumference of the egg is increasing in size; showing that the water is passing into the egg pass the membrane. This is demonstrating passive transport also called osmosis. The lab did not require a graph; but one could be incorporated to just re-illustrate the data provided in the data table.

Write a conclusion for your study. Was your hypothesis supported or refuted?

This lab was performed to show the students the process of cell transport and how fluids pass through the membrane of the cell. The hypothesis was supported. The egg increased in size. Possible errors in the lab could be the careful calculation of time. This lab helps the student see how passive transport works so that they can see if visually.

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Requested competency code

Date submitted

Approved

Approved competency code

• LBIO
• Biology

Approved date

Online / Virtual