HOLIDAY HOMEWORK: BIOLOGY
DUE: Week 1 Term 1 2010
Your text, Biology in Focus and it accompanying CD is very useful. This research should take no more than 2-3
pages.
TASK ONE: RENAL DIALYSIS:
OUTCOME 3(b): GATHER, PROCESS AND ANALYSE INFORMATION FROM SECONDARY SOURCES TO COMPARE THE PROCESS OF
RENAL DIALYSIS WITH THE FUNCTION OF THE KIDNEY.
Some suggested sites:
http://yourtotalhealth.ivillage.com/dialysis.html Brief summary of both types of dialysis
http://www.boredofstudies.org/wiki/index.php?title=Biology:Maintaining_a_Balance Table supplied half way down
http://au.youtube.com/watch?v=HR0oEsBIF5c Animation about transfer of bits in blood
http://au.youtube.com/watch?v=koQWSm8XW1I Video about haemodialysis
http://www.kidneypatientguide.org.uk/site/HKWanim.php
http://www.kidney.org/kidneydisease/howkidneyswrk.cfm
1.
What is the function of the kidneys?
2.
Briefly describe what causes kidney failure.
http://www.healthscout.com/ency/68/637/main.html
3.
What is dialysis and when is it required?
http://www.kidneypatientguide.org.uk/site/treatment.php
http://www.chemistry.wustl.edu/~edudev/LabTutorials/Dialysis/Kidneys.html
4.
Briefly describe the two different types of dialysis.
http://www.howstuffworks.com/question17.htm
5.
Briefly explain how a renal dialysis machine works.
6.
very end of article
Compare (ie table) the process of renal dialysis with the function of the kidney. The one below
may give you a start. (Compare “bits” of kidney to equivalent in dialysis machine)
KIDNEY
DIALYSIS
Filtering mechanism
Substances reabsorbed
Substances secreted
Time and regularity
etc
etc
7.
Provide a labelled diagram of a dialysis machine as compared to kidney structure so that it
reflects the information provided in the table.
TASK TWO: ALDOSTERONE REPLACEMENT THERAPY:
OUTCOME 3(c): PRESENT INFORMATION TO OUTLINE THE GENERAL USE OF HORMONE REPLACEMENT THERAPY IN PEOPLE
WHO CANNOT SECRETE ALDOSTERONE.
1. Explain the function of aldosterone in the body.
2. Why do some people lack aldosterone?
3. What effects does inadequate aldosterone have on the body?
4. Describe hormone replacement therapy to aid this deficiency.
TASK THREE: CONCENTRATED NITROGENOUS WASTES IN ANIMALS:
OUTCOME 3(d): ANALYSE INFORMATION FROM SECONDARY SOURCES TO COMPARE AND EXPLAIN THE DIFFERENCES IN URINE
CONCENTRATION OF TERRESTRIAL MAMMALS, MARINE FISH AND FRESHWATER FISH.
1. Use text Biology in Focus and other sources to draw up a table to compare the concentration of urine
excreted in freshwater fish, marine fish and mammals.
2. Briefly explain these differences in concentration depending on their environment. (This can be included
in the table.)
TASK FOUR: WATER CONSERVATION vs CONCENTRATION OF NITROGENOUS WASTES:
OUTCOME 3(e): USE AVAILABLE EVIDENCE TO EXPLAIN THE RELATIONSHIP BETWEEN THE CONSERVATION OF WATER AND THE
PRODUCTION AND EXCRETION OF CONCENTRATED NITROGENOUS WASTES IN A RANGE OF AUSTRALIAN INSECTS AND
TERRESTRIAL MAMMALS.
Suggested sources: HSC Online OR Biology in Focus text pages 92 - 93
1.
List and describe each of the three nitrogenous wastes- ammonia, urea and uric acid?
2.
Why would there be a need for some Australian mammals and insects to conserve water?
3.
What is the relationship between the conservation of water and the production & excretion of
concentrated nitrogenous wastes.
4.
Tabulate ways that 2 Australian mammals and 2 Australian insects conserve water in regards to
their nitrogenous wastes. (The csu website above may give you a starting point.) HSC Online
South Australian Museum - Life and Adaptations to Water
(http://www.samuseum.sa.gov.au/water/riteframe.htm ) go to ‘Desert’ then ‘Animals..’ (in box) then
‘Spinifex hopping mouse’.