Biology
The enzyme that unwinds DNA during replication.
What is helicase?
What type of bonding would you expect to exist between oxygen molecules?
Covalent Molecules
What is the process of removing salt from saltwater?
Desalinization
How many minutes does it take for a car driving 55 miles/hr to drive 12 miles?
~13 minutes
How many minutes does it take for a car driving 55 miles/hr to drive 12 miles?
Hydrogen
Changes in pH, or a concentration of hydrogen ions, will denature all of the four levels of protein structure except.
What is primary structure?
How many sulfur atoms are in 3.00 g of iron pyrite, FeS2 (M = 120.0)? (the 2 is subscripted)
3.01*10^22
Which element makes up 79% of our atmosphere?
Nitrogen
In a displacement-by-time graph, what type of line would represent an object at rest?
A horizontal line
On what continent will you not find bees?
Antartica
Mutations in DNA that are caused by sunlight or chemical exposure can result in this condition.
What is cancer?
What is the spontaneity of a process when both ΔS and ΔH are negative?
Spontaneous only at low temperatures
Where is most of Earth's freshwater located?
Ice caps and glaciers
What does the slope of a velocity vs time graph give?
Acceleration
Apart from mercury, what is the only other element that is liquid at room temperature and atmospheric pressure?
Bromine
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.
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?
What is the uncontrollable growth of plankton caused by excess nutrients?
Eutrophication
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
What inorganic molecule is produced by lightning?
Ozone
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
Which of these species displays resonance? phosphorus pentachloride, phosphate ion, tetraphosporus dicoxide, carbon monoxide
Phosphate ion
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)
In the absence of air resistance, at what launch angle should a cannon be aimed in order to reach the greatest range?
45 degrees
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