Web Activities
UNIT 1: METABOLIC PROCESSES
Unit 1 - Performance Task and Review
Page Number
Question
p. 194
Performance Task
Before beginning the activity, conduct library or Internet research
to obtain information regarding simple aquarium construction, normal
(healthy) levels for each of the abiotic components you are analysing,
and techniques that aquarists use to change the concentrations of ammonia,
oxygen, and carbon dioxide in aquarium water. Determine the reasonable
limits of the biological loading of the aquarium, and establish a definition
for, and indicators of, metabolic health, as it applies to the living
organisms in your aquarium.
Conduct library or Internet research to help you answer the
following questions.
g. Why do aquariums have filtration systems? How do these
systems help maintain healthy water conditions for plants and animals?
h. What is the source of dissolved ammonia in an aquarium
ecosystem? What happens to the ammonia over time?
i. What are the major sources of dissolved oxygen and carbon
dioxide in a freshwater aquarium? How does the ecosystem maintain
a CO2/O2 equilibrium?
k. Can an aquarium ever be self-sustaining? Explain.
Beginning
Fishkeeping
A complete do-it-yourself guide to Beginning Fishkeeping; includes
information on plants, equipment, water chemistry, and fish. This
is part of the Fish Information Service’s huge site on aquarium
keeping.
The
Nitrogen Cycle
These pages explain The Nitrogen Cycle in depth, and give step-by-step
instructions on how to get it stabilized in a new aquarium.
A
Beginner’s Guide
A Beginner’s Guide to setting up and maintaining Freshwater
Aquariums contains info on what you’ll need, water chemistry,
fish, plants, etc.
p. 197
Unit 1 Review
32. On a health food Web site you read that tablets containing
“natural” vitamin C extracts from rose hips are better for
you than synthetic vitamin C tablets.
a. Given your knowledge of organic compounds, what is your
response?
b. Design an experiment to test whether synthetic and “natural”
vitamin C differ in quality.
c. Conduct Internet research to determine the scientific
consensus on this debate and write a brief report summarizing your
research.
Synthetic
or Natural Vitamins - What’s the Difference?
Synthetic or Natural Vitamins - What’s the Difference? According
to this nutritionist, there’s a BIG difference.
Natural
versus Synthetic
The Center for Health Education and Research has published this article
on Natural versus Synthetic Vitamins. It explains very well why taking
vitamin C supplements is not the same as eating it in food.
p. 198
Unit 1 Review
39. Exercise programs are generally aimed at increasing the
efficiency of cellular respiration in the cells of certain tissues.
Conduct library and/or Internet research to determine how exercise programs
promote increased ATP production.
The
Body Machine
A short essay with lots of detail about how ATP functions in The Body
Machine, and the influence of exercise on the metabolic pathways.
Cell
Energy Metabolism
This guide to the ins and outs of Cell Energy Metabolism explains
how energy is produced and used in the cells of an exercising person.
Bioenergetics
Bioenergetics is a PDF document from Northern Arizona University,
which examines the role of ATP in exercise in detail. It has lots
of graphs and tables, some of which are complicated, and states directly
the effect of exercise on ATP metabolic pathways.
Nutrition
and Sport
Search the Nutrition and Sport Web page for a good explanation of
the role of ATP in exercise. Use the terms "role," "ATP,"
and "exercise" in your search and then click on "Nutriton
and Sport." This site is published by the British Nutrition Foundation.
p. 198
Unit 1 Review
41. Conduct library and Internet research to identify a concept
or theory regarding the process of photosynthesis that has changed dramatically
in the past 200 years. Identify the key scientist(s) involved in the
changes and briefly describe the investigation(s) that led to the new
concept or theory.
Milestones
in Photosynthesis Research
Milestones in Photosynthesis Research is a chapter of an academic
book. It is a fairly long and dense treatise on aspects of photosynthesis
research and its history, with a great deal of information presented.
The
Photosynthesis Page
This is the home page of Govindjee, one of the most well-known photosynthesis
researchers in the world. Follow the links from this page to "Photosynthesis
Education." Then click on "History" to learn more about
the history of photosythesis research.
Arizona
State University Photosynthesis Center
The Arizona State University Photosynthesis Center is a research organization
dedicated to increasing understanding of photosynthesis. The site
includes descriptions of the research being conducted by the centre’s
scientists, as well as links to other related research activities
elsewhere.
p. 199
Unit 1 Review
45. All living organisms depend directly or indirectly on
light. Photosynthetic plants must have light to survive. Humans can
survive without light but are affected directly and indirectly by light.
Just as animals change their behavior in response to seasonal changes,
so do humans. A disorder known as SAD (seasonal affective disorder)
has been identified which accounts for significant changes in human
behavior as the seasons change. In everyday language, SAD is often referred
to as “the winter blues.” It has been estimated that around
2% of the population in northern latitudes suffer symptoms ranging from
sleep problems, overeating, and depression. Conduct library and/or Internet
research to complete the following:
a. Describe the symptoms of SAD.
b. What causes SAD? The explanation should include a complete
description of the scientific concepts on which it is based.
c. What cures or treatments are available?
SAD
Links
This site gives numerous SAD Links to sites with simple information
about Seasonal Affective Disorder, including definitions, symptoms,
and treatments.
Seasonal
Affective Disorder
This simple Web page gives basic information on Seasonal Affective
Disorder - SAD, what it is, who suffers from it, and what can be done.
SADAssociation
SADAssociation is the world’s largest support group of SAD sufferers.
It provides good coverage of the symptoms and treatments of this disorder.
SAD
The Canadian Network for Mood and Anxiety Treatments lists some depression
disorders, including a great description of SAD and its symptoms and
treatment, with some Canadian facts.
