Macromolecules
pH
Enzymes
Macromolecules 2
Random
100
Which macromolecule is made of only carbon and hydrogen?
Lipids
100
Substance A has a pH of 7. Substance B has a pH of 13.6. Substance C has a pH of 4.4. Which substance is basic?
Substance B. Any substance with a pH higher than 7 is basic.
100
What is the analogy we discussed in class for activation energy?
speed bump
100
Which macromolecule provides short term energy?
carbohydrates
100
Provide 2 examples of nonrenewable resources
coal, oil, or natural gas.
200
DNA and RNA are examples of which macromolecule?
Nucleic acids
200
Provide an example of a neutral substance.
Water
200
What is the structure called when the enzyme locks in place with the substrate?
enzyme substrate complex
200
What are the monomers of lipids?
Fatty acids
200
Which subatomic particle(s) are found outside the nucleus?
electrons
300
What is the monomer for nucleic acids
nucleotides
300
Substance A has a pH of 2.3. Substance B has a pH of 8.4. Which substance is acidic?
Substance A. Any substances lower than 7 is acidic.
300
How do enzymes speed up chemical reactions?
They lower the activation energy.
300
What are the elements of a nucleic acid?
carbon, hydrogen, oxygen, nitrogen, and phosphorus
300
Give an example of a quantitative observations.
Answers may vary - answers must include numbers. EX: the tree is 10 feet tall. There are 5 puppies
400
Which macromolecule stores long term energy?
lipids
400
Substance A has a pH of 6.1. Substance B has a pH of 10.4. Substance C has a pH of 13.8. Which substance is more basic?
Substance C. The higher the pH the more basic the substance.
400
Explain how a change in pH or temperature affects an enzyme. Must use the following vocabulary terms: enzyme, substrate, and active site.
A change in pH or temperature causes the active site on the enzyme to denature (change shape). As a result, the substrate will not be able to fit with the enzyme, making it useless.
400
Enzymes are an example of which macromolecule?
protein
400
A scientist wants to see if students who study while listening to classical music will get better grades on their Biology test. What is the dependent variable?
grade on the Biology test
500
Which macromolecules are organic?
All of them - nucleic acids, proteins, lipids, and carbohydrates (because they all contain carbon)
500
Substance A has a pH of 4.1. Substance B has a pH of 1.6. Substance C has a pH of 12.1. Substance D has a pH of 9.9. Which substance is the most acidic?
Substance B. The lower the pH the more acidic the substance.
500
What are the vocabulary terms that describe the analogies for a door, a lock, and a key?
Door = enzyme. Lock = active site. Key = substrate.
500
Sucrose is an example of what macromolecule?
Words with an -ose ending are carbohydrates
500
A scientist wants to see if students who study while listening to classical music will get better grades on their Biology test. What is the control group?
The group of students who study without classical music.
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