... for 30 minutes twice during the week and then jogging (a vigorous intensity activity) for 20 minutes on two other days. A number of moderate and vigorous intensity activities are listed below that you could perform to help you achieve your target activity level. Moderate Physical Activity Vigorous Physical Activity Water aerobics Swimming laps slowly Basketball (playing a game) for 15-20 ... and Vigorous. Light Intensity   Light intensity physical activities are those with energy expenditures between 1.5 and 2.99 METs. These activities are commonly performed as part of one's activities o...

• Word Count: 10521
• Approx Pages: 42
• Grade Level: High School

... solutions - the cytoplasm and the solution around the cell. If the solutions are of different concentrations, then osmosis will occur. The picture below illustrates an animal cell in pure water. The cytoplasm inside the cell is a fairly concentrated solution. The proteins and many other substances dissolved ... a solution, the dilute solution and the pure water are each separated from a concentrated solution by a selectively permeable membrane. In the first diagram below, the concentrated solution is the cytoplasm and the selectively permeable membrane is the cell membrane. Therefore osm...

• Word Count: 2635
• Approx Pages: 11
• Grade Level: High School

... matter such as dead insects or larger animal carcasses. Although Slaters mainly eat dead and decaying plant matter and are not known to eat living vegetable matter, they have been proven to sometimes consume seedlings, root vegetables and even fallen fruit damaged by birds and insects. Many animals ... prefer moist substrates of high humidity value as observed when collecting the Slaters from a farm in Waikari, as the majority of Slaters were found living in substrates of high moisture values such as the damp soil beneath the log cords, the rocks, and the fence posts. Other organisms/anim...

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... questions. Learning Object Info: Reading assignmnet - lesson 2   Type: HTML   Submitted By: Randall Warwick   Lesson Highlight Topic - Biochem Basics A Brief Look at Biochemistry Many of the compounds found in living systems are large - they're often referred to as macromolecules. In this brief summary, I want to concentrate on some of the most important macromolecules: proteins, carbohydrates, lipids and nucleic acids ... . Proteins Proteins are large molecules composed of smaller subunits called amino acids. There are about twenty common amino acids found in living systems. Each ...

• Word Count: 10700
• Approx Pages: 43
• Grade Level: High School

... and minerals to sustain life forms, similarly to those on the bottom of the Pacific Ocean (Columbia University, 2003). Research teams in 2003 tested samples of ice from 3,200 meters below Vostok Station, they found diverse colonies of microbes. Scientists say this is significant because the lake has been isolated from the usual sources of atmospheric-derived energy, such as photosynthesis ... water very carefully before we enter this lake." This is just one of the problems scientists are encountering with the drilling of this lake. Research also indicates that the organisms living in La...

• Word Count: 2522
• Approx Pages: 10
• Has Bibliography
• Grade Level: High School

... of human health. Biochemical Oxygen Demand: Organic wastes that decay in a body of water. decrease the amount of oxygen found in it. The living things in the lake need oxygen to survive. If the oxygen level is depressed to zero, all fish in the lake die. Any decomposition ... , the result of this is rich plant life which prohibits recreational activities. Plankton! blooms depress oxygen levels (as mentioned before) and therefore, endanger living organisms. Major sources of nutrients are municipal sewage and agricultural runoff. Toxic Materials: Can affect the health of aquatic organisms ...

• Word Count: 2505
• Approx Pages: 10
• Grade Level: High School