Activity 3_cell energy

What is entropy a measure of?

• The energy required to start a reaction

• The degree of disorder

• The speed of a chemical reaction

• The amount of energy released in a reaction

Tags

NGSS.HS-PS3-4

What is an energy diagram?

• A chart showing enzyme activity

• A visual representation of energy changes during a chemical reaction

• A graph of temperature changes

• A diagram of molecular structures

Tags

NGSS.HS-PS1-4

What is an enzyme-substrate complex?

• A permanent bond between enzyme and substrate

• The temporary complex formed when an enzyme binds to its substrate

• A complex that inhibits enzyme activity

• A structure that stores energy

What are allosteric sites on enzymes?

• Sites that bind only to substrates.

• Regions that bind to molecules other than the substrate.

• Sites that are permanently blocked.

• Regions that destroy the enzyme.

What is photosynthesis?

• The process of breaking down glucose.

• The conversion of light energy into chemical energy.

• The process of cellular respiration.

• The conversion of chemical energy into light energy.

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

What is the role of an allosteric site in enzyme activity?

• It is the main active site for substrates.

• It binds to molecules other than the substrate.

• It permanently deactivates the enzyme.

• It enhances the enzyme's ability to bind substrates.

What are grana?

• Stacks of thylakoid membranes within chloroplasts.

• The fluid-filled space within chloroplasts.

• Pigments found in chlorophyll.

• A group of accessory pigments.

What do chlorophyll a and b do?

• Absorb light most efficiently in the blue and red parts of the spectrum, essential for photosynthesis.

• Protect the chlorophyll from excess light energy.

• Capture light energy and funnel it to the reaction center.

• Convert light energy into chemical energy.

Tags

NGSS.HS-LS1-5

What is the primary function of the reaction center in photosynthesis?

• Convert light energy into chemical energy.

• Absorb light most efficiently in the blue and red parts of the spectrum.

• Protect the chlorophyll from excess light energy.

• Capture light energy and funnel it to the reaction center.

Tags

NGSS.HS-LS1-5

What is aerobic respiration?

• The process by which cells use oxygen to break down glucose and produce energy

• The process by which cells break down glucose in the absence of oxygen

• The process of splitting water molecules

• The range of light wavelengths a substance can emit

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3