In the Enzyme-Substrate Complex, What is represented by Y?

• enzyme

• substrate

• active site

• product

Catalase is an enzyme that speeds up the decomposition of hydrogen peroxide into water and oxygen. Students conducted two investigations to determine the ideal conditions for the function of catalase. One investigation compared catalase activity at different values of pH. The other investigation compared catalase activity at different temperatures.

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According to the data in the chart, which pH and temperature combination provides the best conditions for catalase to function?

• pH of 7 and a temperature of 50°C

• pH of 5 and a temperature of 4°C

• pH of 5 and a temperature of 25°C

• pH of 7 and a temperature of 37°C

Tags

NGSS.HS-PS1-5

Fireflies emit light. The production of light by an organism is called bioluminescence. To generate visible light, cells in a firefly's tail produce thousands of luciferase enzymes. Luciferase binds to a chemical called luciferin. Once bound, the luciferase enzyme speeds up a chemical that combines an oxygen molecule and luciferin to produce oxyluciferin. This reaction requires energy and releases light.

 

Which of the following best describes how the luciferase enzyme speeds up the chemical reaction?

• Luciferase increases the amount of time the light is visible.

• Luciferase decreases the amount of energy required for the reaction to start.

• Luciferase increases the number of sites on luciferin that must bind to oxygen.

• Luciferase decreases the temperature of the environment inside the body of the firefly.

Tags

NGSS.HS-PS1-4

Which statement concerning ATP and activity within the cell below is correct?

• The absorption of ATP occurs at structure A.

• The synthesis of ATP occurs within the structure B.

• ATP is produced most efficiently by structure C.

• The template for ATP is found in structure D.

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

Complete the following paragraph as it relates to viral structure vs. cell structure.

Drag the terms below into the correct space within the paragraph.

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A​ ______ is basically made up of genetic material surrounded by a shell called a ______​. Viruses need a ______ cell in order to carry out processes, unlike a ______ which does not.

• virus, capsid, host, cell.

• capsid, host, cell, virus.

• virus, cell, capsid, host.

• host, virus, cell, capsid.

Which of the following would complete the analogy?

 

chloroplast : ______________ : : ________________ : ________________

• respiration  : : cell membrane : photosynthesis

• photosynthesis : : cell membrane : respiration

• respiration  : : mitochondria : photosynthesis

• photosynthesis : : mitochondria : respiration

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-5

Using the diagram, choose the terms that complete the diagram at X and Y.

• X=radiant energy,  Y=ATP

• X=glucose,  Y=ATP

• X=oxygen,  Y=water

• X=oxygen,  Y=Carbon Dioxide

Tags

NGSS.HS-LS1-5

NGSS.HS-LS1-7

Choose the answer that best completes the sentence:

The endoplasmic reticulum is found only in​ ________.

• eukaryotic cells
• plant cells
• prokaryotic cells
• animal cells

What equation best describes the process at A?

• H₂O + O₂  ®  C₆H₁₂O₆ + CO₂

• H₂O + CO₂  ®  C₆H₁₂O₆ + H₂O

• O₂ + C₆H₁₂O₆  ®  H₂O + CO₂

• H₂O + CO₂  ®  C₆H₁₂O₆ + O₂

Tags

NGSS.HS-LS1-5

NGSS.HS-LS1-7

Which pathway(s) would yeast use to produce energy?

• B

• C

• A

• A & B

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3