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1. Describe the properties of water that make if invaluable to life as we know it.
2. Explain why the versatility of carbon is essential to life.
3. Describe the structure and biological function of carbohydrates, lipids, proteins, and nucleic acids; give examples of each.
4. Describe the four different types of protein configurations and give examples of each.
5. Explain what the Miller-Urey experiments contributed to modern theories of the origin of life.
6. List the three different energy sources that could have powered the creation of organic molecules early in Earth's history.
7. Define primary and secondary heterotrophs and autotrophs.
8. Distinguish between prokaryotes and eukaryotes.
9. Describe the Margulis proposal of the origin of eukaryotes from prokaryotes.
10. Explain the endosymbiotic theory
Holding water in a sieve Pour some oil over the wire mesh of a kitchen sieve and shake out the overload so that the holes are open. Cautiously pour water into the sieve from a
Define Fats - Nutritional Components Once the body stops eating, it begins to live on its fat. Fat storing depots 'adipocytes' are located in the different parts of the body. I
The Arctic Circle lies at which latitudes: At (66 ½oSouth)
Question 1: a) Briefly explain the following terms: i) evaporation ii) condensation iii) transpiration b) Describe the hydrologic cycle. Question 2: a) Define an
How to make an experimental biter Fit a one-hole stopper carrying a short length of glass tube into the small end of a lamp chimney. Put a little cotton wool in the bottom and
what is the meaning of element
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Functional unit of the nervous system-neuron: The human brain is composed of more than one hundred billion (100,000,000,000 or 1011) cells called 'neurons'. This number which
what is the structure of the ecosystem
To show how water rises by capillarity Colour some water in a shallow dish with ink and touch a blotter to the water surface. Observe how the water increases in the blotter.
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