Biology
Chemistry
Environmental Science
Physics
Miscellaneous
100

The enzyme that unwinds DNA during replication.

What is helicase?

100

What type of bonding would you expect to exist between oxygen molecules?

Covalent Molecules

100

What is the process of removing salt from saltwater?

Desalinization

100

How many minutes does it take for a car driving 55 miles/hr to drive 12 miles?


~13 minutes

100

How many minutes does it take for a car driving 55 miles/hr to drive 12 miles?


13.1 Minutes

200

Changes in pH, or a concentration of hydrogen ions, will denature all of the four levels of protein structure except.

What is primary structure?

200

How many sulfur atoms are in 3.00 g of iron pyrite, FeS2 (M = 120.0)? (the 2 is subscripted)

3.01*10^22

200

Which element makes up 79% of our atmosphere?

Nitrogen

200

In a displacement-by-time graph, what type of line would represent an object at rest?

A horizontal line

200

On what continent will you not find bees?

Antartica

300

Mutations in DNA that are caused by sunlight or chemical exposure can result in this condition.

What is cancer?

300

What is the spontaneity of a process when both ΔS and ΔH are negative?

Spontaneous only at low temperatures

300

Where is most of Earth's freshwater located?

Ice caps and glaciers

300

What does the slope of a velocity vs time graph give?

Acceleration

300

Apart from mercury, what is the only other element that is liquid at room temperature and atmospheric pressure?

Bromine

400

What is the central dogma of molecular biology?

A theory stating that genetic information flows only in one direction, from DNA to RNA, to protein, or RNA directly to protein.

400

The isotope cobalt-57 has a half-life of 272 d. How long will it take 57Co to decay to 38% of its original activity?

What is 380 days?

400

What is the uncontrollable growth of plankton caused by excess nutrients?

Eutrophication

400

Consider two objects whose masses are 100 g and 200 g. The smaller object strikes the larger object with a force of 500 N. According to Newton’s third law of motion, what force does the larger object exert on the smaller object?

500 N

400

What inorganic molecule is produced by lightning?

Ozone

500

What is the difference between dehydration synthesis and hydrolysis?

Dehydration synthesis combines molecules by the removal of H2O; Hydrolysis breaks apart molecules by adding H2O

500

Which of these species displays resonance? phosphorus pentachloride, phosphate ion, tetraphosporus dicoxide, carbon monoxide

Phosphate ion


500

Organic compounds responsible for ozone depletion commonly used in refrigerants, aerosols, and solvents that have been restricted under the Montreal Protocol.

What are Chlorofluorocarbons (CFCs)

500

In the absence of air resistance, at what launch angle should a cannon be aimed in order to reach the greatest range?

45 degrees

500

What is the name of the famous scientist who is best known for his work on diseases like rabies? He is also known for the advancement of vaccinations.


Louis Pasteur

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