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How to design an experiment and interpret variables.

1) Identify 2 differences between the bacteria and protist kingdom.
2) If you were testing the effects of different brands of fertilizer to detemine which one promoted the best growth over 6 weeks.
a) identify a negative control
b) identify 2 controlled variables
c) identify the ependent variable
3) Living organisms must respond to stimuli, explain why this characteristic helps define life by discussing 2 specific examples.
4) Explain why double bonds of unsaturated fats are so important for our health and for making oils liquid at room temperature. Identify 2 sources or examples of unsaturated fats (oil).

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1) Identify 2 differences between the bacteria and protist kingdom.

There are a total of six kingdoms in the modern approach to phylogeny (means - categorizing living things). They are Animalia, Plantae, Fungi, Protista, Bacteria, and Archaea (Also called archebacteria ). The groups can be divided roughly into the following categories, but there some stand difference between them.

Bacteria and Archaea are prokaryotes, which means then do NOT have a nucleus. Protists, plants, and animals are eukaryotes, which means they DO have a nucleus. In fact, bacteria don't really have any organelles at all. All their contents just float around in their cells and aren't contained in anything special. Eukaryotes, on the other hand, have lots of organelles like golgi bodies, endoplasmic reticulum, and mitochondria. Protists have mitochondria, but bacteria do not.

Both protists and bacteria have ribosomes, which are special protein/RNA combinations that help the cell to build other ribosomes. However, eukaryotic ribosomes in protists are different from those in bacteria. Eukaryotes have an 80s ribosome that is made up of a 60s subunit and a 40s subunit. Bacteria have 70s ribosomes, which are made up of 50s and 30s subunits.

Finally, bacteria are only unicellular, which means each cell lives by itself and does not depend on other cells to live. It may come into contact with other cells from time to time, but this contact is brief. Protists can be unicellular, colonial, or multicellular. Colonies are groups of many cells that live together but do not have to. They do so because it is advantageous compared to living on their ...

Solution Summary

1) Identify 2 differences between the bacteria and protist kingdom.
2) If you were testing the effects of different brands of fertilizer to detemine which one promoted the best growth over 6 weeks.
a) identify a negative control
b) identify 2 controlled variables
c) identify the dependent variable
3) Living organisms must respond to stimuli, explain why this characteristic helps define life by discussing 2 specific examples.
4) Explain why double bonds of unsaturated fats are so important for our health and for making oils liquid at room temperature. Identify 2 sources or examples of unsaturated fats (oil).

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