Environmental Science and Experimental Design

The video provides a GED science test with questions and answers, covering topics like traffic flow, tidal power, peat as a fuel, extremophiles, and internal combustion engines. It includes instructions, a diagnostic scoring system, and a conclusion with a scoring chart to assess readiness for the real GED test.

What is the recommended tool you should have before starting the GED Ready Test?

• A notebook

• A dictionary

• A calculator

• A ruler

What is the mean speed in kilometers per hour in an unstable traffic flow situation?

• 50 km/h

• 30 km/h

• 40 km/h

• 20 km/h

Why do some scientists recommend building tidal power plants?

• They require less maintenance

• They are cheap to build

• They use a natural process and do not release greenhouse gases

• They can be built anywhere

What is one reason other scientists oppose tidal power plants?

• They are difficult to construct

• They can negatively impact the surrounding ecosystem

• They are too expensive

• They are not efficient

What conclusion can be drawn about peat based on the restoration process?

• Peat is not a fossil fuel because humans can promote the replenishment of peat

• Peat is a fossil fuel because re-wetting it takes only 3-5 years

• Peat is a fossil fuel because the total time for restoration is lengthy

• Peat is not a fossil fuel because it has biologic origins making it a biofuel

How many days will all of the researcher's experiments take?

• 84 days

• 7 days

• 21 days

• 49 days

What is the independent variable in the experiment studying the environmental impact of internal combustion engines?

• Type of fuel

• Distance traveled

• Quantity of particulate emissions

• Mass of vehicle and cargo

What is the purpose of ubiquitin in cells?

• To attach to mutant proteins so that they can accumulate in the cell

• To tag waste proteins for recycling in the proteosomes

• To create small polypeptide chains that are 76 amino acids long

• To create inclusions that can be identified under the microscope

Why do individuals with spinocerebellar ataxia experience loss of muscle control?

• Inclusions can build up in all body systems and cause debilitating effects

• Genetic mutations in the ataxin-1 protein cause muscular proteins to change shape

• When the ubiquitin tagging system does not work effectively, cellular waste can build up in the muscles

• The neurons affected by the ataxin-1 protein buildup are in a region of the brain that manages muscle control

At what point on the graph is the population of horses at carrying capacity?

• Point A

• Point B

• Point D

• Point C