AP Biology Unit 4 Energy Review

To prevent wasting energy and resources to create un-needed ATP, cellular respiration pathways can be shut down

• Using positive feedback in the krebs cycle

• Using positive feedback in glycolysis

• Using negative feedback in glycolysis

• Using negative feedback in krebs cycle

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NGSS.HS-LS1-3

How is a molecule reduced?

• electrons are given to the molecule
• electrons are taken from the molecule
• money is taken from the molecule
• protons are given to the molecule

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NGSS.HS-PS1-2

How is a molecule oxidized?

• Electrons are added to the molecule
• Electrons are taken from the molecule
• Electrons are shared with the molecule
• Protons are added to the molecule

Tags

NGSS.HS-PS1-2

Which of the following correctly describes how enzymes work?  

• they lower the energy of the reactants to increase the rxn rate
• they supply energy to the reaction to increase the rxn rate
• they lower the energy of the products to increase the rxn rate
• they lower the activation energy of the reaction to increase the rxn rate

Tags

NGSS.HS-PS1-5

Which process is the largest contributor to the release of CO₂ 

• Citric Acid Cycle or Krebs Cycle
• Pyruvate Oxidation
• Glycolysis
• Oxidative Phosphorylation 

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NGSS.HS-LS1-7

If ADP is phosphorylated in the presence of oxygen, this is known as

• Substrate Level Phosphorylation

• Oxidative Phosphorylation

• Photophosphorylation

Tags

NGSS.HS-LS1-7

After 5 glucose molecules have been broken down in the cell, which pH value would most likely present the in matrix of the mitochondria. 

• 6
• 2
• 4
• 7

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NGSS.HS-LS1-7

When NADH is reduced and oxidized, which response best describes what is lost or gained? 

• only Electrons 
• 2 stable Hydrogen atoms 
• Pair of electrons 
• 2 ATP 

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NGSS.HS-LS1-7

Pyruvate Oxidation creates a specific numbered carbon molecule at the end of it's process. What is the number of carbons for this molecule? 

• 2
• 3
• 6
• 1

Tags

NGSS.HS-LS1-7

A. Photons excite the electrons of PS I

B. Photons excite the electrons of PSII

C. Electrons travel along the ETC, allowing for the pumping of a proton

D. NADP + is reduced to NADPH

What is correct sequence of events?

• A, C, B, D

• B, C, A, D

• A, B, C, D

• C, A, B, D

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5