Kingdom Bacteria

Bacteria are prokaryotic and unicellular (although some join together to form colonies or link up in chains). When people think of bacteria, they immediately think of diseases – but disease-causing bacteria only make up a small fraction of all bacteria. Bacteria play an important role in ecosystems (decomposers, nitrogen fixation), and in edible products (cheese,…

Kingdom Archaea

Organisms in Archaea live in extreme conditions, such as: Very hot (hot springs, volcanoes, sea floor vents) Very cold Acidic Alkaline Salty High pressure All Archaea are prokaryotic and live in anaerobic conditions (no oxygen) … they obtain the energy they require from inorganic molecules or from light. Originally, organisms from the Archaea were classified…

Voltage

Energy can be defined as the ability to do work.  Electrons possess energy and this energy can be converted to another form to do work (make a lightbulb shine, motor run, etc).  This energy is called electric potential energy. Definitions: Electric potential energy:  energy that the battery gives to the electrons; the amount of energy…

Evolution: Genetic Drift, Gene Flow, Mutations, Random Change

Random change Key factors that can cause evolution: –Small populations are more variable to changes in allele frequencies -non-random mating opportunities result in only those “preferred” traits being passed onto future populations –new alleles may be created when mutations occur (changes the frequencies of new and original alleles) -migration causes changes in the relative abundance…

Energy Conservation

–          As the human population keeps increasing (it’s over 6 billion people right now), we keep requiring more and more energy. –          Using too much energy places stress on our energy production systems and may cause blackouts when we need the energy the most. HOW DO WE USE ELECTRICITY? –          In order to conserve (save)…