Monday, December 10, 2007

Your so good to me!

Microorganisms are small organisms that are invisible to the naked eye. The most common examples of microorganisms are bacteria and fungi. As with humans, there are good and bad bacteria and fungi. People seem to focus on the bad ones that cause health problems for lots of people every day, but they often forget that there would not be any life without the good microorganisms that help nature and humans every day. I think that fungus are the good type of mircroorganism beacuse it helps with our yeast and etc.

Thursday, December 6, 2007

The good, the bad the ugly

All animals are multicellular, but some are too small to be seen by the naked eye. Microscopic arthropods include dust mites and spider mites. Microscopic crustaceans include copepods and the cladocera. Another common group of microscopic animals are the rotifers, which are filter feeders that are usually found in fresh water.
The
green algae are a large group of photosynthetic eukaryotes that include many microscopic organisms. Although some green algae are classified as protists, others such as charophyta are classified with embryophyte plants, which are the most familiar group of land plants.
Bacteria are the most diverse and abundant group of organisms on Earth. Bacteria inhabit practically all environments where some liquid water is available and the temperature is below +140 °C. They are found in sea water, soil, animals' gastrointestinal tracts, hot springs and even deep beneath the Earth's crust in rocks.
Fungi are a
kingdom of eukaryotic organisms. The fungi are heterotrophic organisms characterized by a chitinous cell wall, and in the majority of species, filamentous growth as multicellular hyphae forming a mycelium; some fungal species also grow as single cells. Sexual and asexual reproduction is commonly via spores, often produced on specialized structures or in fruiting bodies.
A virus is a
sub-microscopic infectious agent that is unable to grow or reproduce outside a host cell. Virus diseases inflict a heavy illness and economic burden on humans and animals and can devastate agricultural crops. Each viral particle, or virion, consists of genetic material, DNA or RNA, within a protective protein coat called a capsid.
A prion is an
infectious agent composed only of protein. They cause a number of diseases in a variety of animals, including Bovine Spongiform Encephalopathy (BSE) in cattle and Creutzfeldt-Jakob Disease (CJD) in humans. All known prion diseases affect the structure of the brain or other neural tissue, and all are currently untreatable and fatal. Mice genetically modified to avoid the symptoms are important models of study.
i think that animal cells, plants cells, and fungi are the good one beacuse they don't cause diseases that get you all icky and uncomfortable and the bad ones are bacteria, viruses, and prions beacuse they cause you to get sick and have a reson to stay at home. ;]

If I were an organelle

Eukaryotes are the most structurally complex cell type, and by definition are in part organized by smaller interior compartments, that are themselves enclosed by lipid membranes that resemble the outermost cell membrane. The larger organelles, such as the nucleus and vacuoles, are easily visible with the light microscope. They were among the first biological discoveries made after the invention of the microscope.
Prokaryotes are not as structurally or metabolically complex as eukaryotes, and were once thought not to have any internal structures enclosed by lipid membranes. In the past, they were often viewed as having little internal organization; but, slowly, details are emerging about prokaryotic internal structures.
I would rather be a Eukaryotes because they are more famous then a prokaryokes organelle. A prokaryokes would probably be my best friend because they are not as structurally or metabolically complex as eukaryotes organelle. =]

Delightful diversty

A microorganism or microbe is an organism that is microscopic (too small to be seen by the human eye). The study of microorganisms is called microbiology. Microorganisms include bacteria, fungi, archaea or protists, but not viruses and prions, which are generally classified as non-living. Most microorganisms are single-celled, or unicellular, but some are microscopic, and some unicellular protists are visible to the average human.
Microorganisms live almost everywhere on Earth where there is liquid
water, including hot springs, on the ocean floor, and deep inside rocks within the Earth's crust. Microorganisms are critical to nutrient recycling in ecosystems as they act as decomposers. As some microorganisms can also fix nitrogen, they are also an important part of the nitrogen cycle. However, pathogenic microbes can invade and grow within other organisms and cause diseases that kill millions of people and other animals every year.


Is it alive?

A virus is a sub-microscopic infectious agent that is unable to grow or reproduce outside a host cell. Virus diseases inflict a heavy illness and economic burden on humans and animals and can devastate agricultural crops. Each viral particle, or virion, consists of genetic material, DNA or RNA, within a protective protein coat called a capsid. Their shape varies from simple helical and icosahedral (polyhedral or near-spherical) forms, to more complex structures with tails or an envelope. Viruses infect cellular forms of life and are grouped into animal, plant and bacterial viruses.
It has been argued whether viruses are living organisms. Some consider them non-living as they do not meet the criteria of the definition of
life. For example, unlike most organisms, viruses do not have cells. However, viruses have genes and evolve by natural selection. They have been described as organisms at the edge of life. Viral infections in human as well as animal hosts, usually result in an immune response and disease. Often, a virus is completely eliminated by the immune system. Antibiotics have no effect on viruses, but antiviral drugs have been developed to treat life-threatening infections. Vaccines that produce lifelong immunity can prevent virus infections.
I don't think a lit candle is alive because if it were alive it would be able to reproduce, or eat. A lit candle doesn't do anything that a living thing would do.

Enzyme Time

Enzymes are proteins that catalyze. In enzymatic reactions, the molecules at the beginning of the process are called substrates, and the enzyme converts them into different molecules, the products. Almost all processes in a biological cell need enzymes in order to occur at significant rates. Since enzymes are extremely selective for their substrates and speed up only a few reactions from among many possibilities, the set of enzymes made in a cell determines which metabolic pathways occur in that cell.

Atomic structure

Atomic structure are basically figures and objects. They can be stacked, grouped together or even cut to make other structure. Structures exist in our everyday living from buildong to simple designs on a t-shirts. They all consist of atomic structures. For instance she structure of an average house is a square with a traingle on top.The design of an ipod is just a rectangle with a circle and a square in it. So this is how i think atomic structure are important.

Thursday, October 25, 2007

Calorimetry Lab

Basically in the calometry lab we learn how to determine how much calories a chip contain, by burning it . The faster it burns the more fat it has which means how much calories it has and the less it has the less fat the chips will be. In my group I came to the conclusion that the cheetos puff burn faster and have the most calories while the sunchips had the least.

Thursday, October 4, 2007

Describe Yourself

Hello my name is Ying Yi Zhang, I am a paint because I like to splatter things, and you could paint things with paint and draw pictures like this one famous painter. You could also play paint ball with paint, and throw paint t each other just for the fun of it. Paint could express your mood by the way you paint your things.