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What are true solutions in chemistry?

Homogenous solutions exist in several different states, but are most commonly found as liquids. Some solutions are made of gases and solids as well, however; air is one of the most prevalent examples of a gaseous homogenous solution. Air is comprised of the elements of oxygen and nitrogen, and contains trivial amounts of other gases. Brass is an example of a solid homogenous solution, and is made of zinc and copper.

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Why do plants need sunlight?

Sunlight is necessary for the light reactions of photosynthesis. Photosynthesis occurs in the chloroplasts of plant cells and the light reactions, specifically, happen in the thylakoid membranes of the chloroplast. Thylakoids contain two photosystems for gathering light from the sun. These photosystems utilize pigment molecules to absorb light energy, which passes between molecules until it reaches a reaction center. In the reaction center, energy from sunlight excites an electron from the pigment chlorophyll and electron transport allows for the creation of two high energy molecules: adenosin..

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How does the body get rid of lactic acid?

Stretching is an essential part of preventing lactic acid buildup and removing lactic acid that is already present in the muscles. By stretching or massaging the exercised muscles immediately after a workout, the muscles are better able to release excess lactic acid.\nImproving the overall circulation of the body can also speed the formation and removal of lactic acid. The more intense the workout, the faster the formation and removal of lactic acid will be. While the formation of lactic acid does not use oxygen, AZ Central explains that focusing on slow inhalation and exhalation can help to r..

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What is fluorescent microscopy?

When UV light enters a fluorescence microscope, it reflects on a dichroic mirror, which is a type of mirror that reflects some wavelengths and allows other wavelengths to pass through. This mirror bounces the light waves onto the specimen being examined, exciting the fluorescent molecules within the specimen. The fluorescent-wavelength light is gathered by the objective lens. The light waves pass through the dichroic mirror, and the barrier filter removes all light except that emitted from the sample. The light then goes to the eyepiece to produce the image.

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Why are rhinos becoming endangered?

Save the Rhino states that traditional Chinese medicine has been using rhino horn for thousands of years. The significant increase in rhino poaching is fueled by the demand for such medicine in Asia.\nAnother reason for the decline in rhino population is habitat loss, which is caused by both illegal and authorized logging and clearance of land for agricultural production and human settlement.\nPoaching for jambiya handles is a major threat to the existence of rhinos. In the 1970s and 1980s, rhino horn was used to create ornamental handles for these daggers.\nConservationists try to eliminate t..

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What are some facts about the Archean Eon?

Most rocks were igneous or metamorphic as a result of high volcanic activity, although sedimentary rocks were beginning to form on ocean floors. The oceans were much warmer and more acidic than they are today. The first living cells in these oceans evolved into prokaryote cells about 3.5 billion years ago. The vast majority of cells on earth are still prokaryotes. About 3 billion years ago, some cells evolved the ability to photosynthesize, converting sunlight, water and carbon dioxide into the energy needed to live, with oxygen as a by-product. However, most of the oxygen was still not in the..

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What is Euglena viridis?

Flagella are long, whip-like structures that move quickly and violently behind cells to produce movement. Human sperm cells, for example, have flagella. The characteristics of Euglena viridis are considered definitive for describing a species as a euglena. The combined eating and photosynthesizing habits of Euglena viridis led to this classification. They remained classified as animals or plants until biologists eventually agreed that they belonged to the kingdom Protista.

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What plants repel rabbits?

Goatweed, impatiens and verbena are annual plants useful for repelling rabbits. Goatweed is a hardy plant that grows in a variety of different types of soil. It grows to about 3 feet tall if nurtured with full sun and consistent waterings. For shadier spots, impatiens may be appropriate, coming in a variety of sizes ranging from 6 inches to 3 feet tall. These flowering plants are available in several different colors and make an attractive rabbit repellant.\nFor homeowners desiring a rabbit repellant that comes back each year, coneflower and honeysuckle are the plants of choice. These hardy pe..

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How do you convert small-engine cubic centimeters into horsepower?

Most engines have a horsepower rating listed in the documentation for that engine. Consult the manufacturer or owner's manual for an accurate horsepower rating. Engines usually have a model, serial or identification number carved into a visible flat spot on them. This can be referred to when looking up engine specification data.

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How do you read free circuit diagrams?

The first step to reading circuit diagrams is to get familiar with the standardized symbols for different components, such as resistors, capacitors, diodes and transistors. For instance, a few zig-zag lines, with two terminals extending outward, represents a resistor. All integrated circuits have a generic symbol, a rectangle with labeled pins extending out of it, accompanied by a value that identifies the chip.\nTo read the circuit diagram, note each symbol in the schematic along with its associated name and value. The value of a component specifies its most important characteristic, while it..

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