Tutorials- Midterm Review

An advertisement for a health supplement for dogs claims to build lean muscle and provide energy. Which two biomolecules must the supplement contain to provide these benefits?

• Carbohydrates and Lipids

• Proteins and Carbohydrates

• Nucleic Acids and Carbohydrates

• Lipids and Nucleic Acids

Tags

NGSS.HS-LS1-6

Which of the following best describes these biomolecules?

• Molecule X and Molecule Y are both carbohydrates.

• Molecule X is a nucleic acid and Molecule Y is a carbohydrate.

• Molecule X and Molecule Y are both nucleic acids.

• Molecule X is a carbohydrate and Molecule Y is a nucleic acid.

Tags

NGSS.HS-LS1-6

What is the order of the levels of organization shown in the image above?

• organ system →community→ecosystem→population

• organism→population→community→ecosystem

• organ→population→organism→ecosystem

• population→organism→ecosystem→community

Tags

NGSS.MS-LS2-3

What are the monomers of proteins?

• monosaccharides

• glycerol and fatty acids

• nucleotides

• amimo acids

Tags

NGSS.HS-LS1-6

Macromolecules are formed via

• Hydrolysis- the adding of H20

• Dehydration Synthesis- the removal of H20

Tags

NGSS.HS-LS1-6

Enzymes are proteins that have a 3D shape that is "specific" to a particular SUBSTRATE. Environmental conditions can change the shape of the protein. What is the most likely result if the shape of the enzyme changes?

• The substrate will change its shape to match the enzyme.

• The enzyme will be able to bind to more diverse substrates than before.

• The enzyme will no longer be able to catalyze the reaction with the substrate.

• The products made from the enzyme and the substrate will be changed.

Which statement BEST describes how enzymes affect the speed of a metabolic reaction?

• Enzymes increase the concentration of reactants, which increases the speed of the reaction.

• Enzymes prevent products from being converted back into reactants, which decreases the speed of the reaction.

• Enzymes decrease the energy needed to start a reaction, which increases the speed of the reaction.

• Enzymes replace the reactants in a chemical reaction, which decreases the speed of the reaction.

Tags

NGSS.HS-PS1-5

For an enzyme to be able to catalyze a reaction, the active site must

• be occupied by an inhibitor.

• cause the enzyme to be destroyed in the reaction.

• increase the activation energy level.

• have a complimentary shape to the substrate.

Based on the data, this enzyme functions best at what temperature and pH?

• Temperature of 50°C and a pH of 10

• Temperature of 40°C and a pH of 8

• Temperture of 27°C and a pH of 4

• Temperature of 37°C and a pH of 6

Tags

NGSS.HS-PS1-5

A student identified the following characterisitcs of four organisms found in a sample of pond water. Based on the observations, which organisms belong to the taxonomic group of BACTERIA?

• Organisms 2 and 3

• Organisms 1 and 2

• Organisms 3 and 4

• Organisms 1 and 4

Tags

NGSS.MS-LS1-1