Unit 3 AP Biology

What is one function of the other pigments  besides chlorophyll, in the chloroplast?

• to block damaging wavelengths of light

• to absorb different wavelengths than the chloroplasts

• to provide different colors to the leaves

• to transfer energy to a separate photosystem beside the one using chlorophyll a and b.

Tags

NGSS.HS-LS1-5

What supplies the electrons that are lost in PS I?

• the electrons from PS II

• water

• glucose

• oxygen

Tags

NGSS.HS-LS1-5

The light reactions occur in the ________ and the dark reactions take place in the ________.

• Chloroplast / thylakoid membrane

• stroma / thylakoid

• mesophyl / stomata

• thylakoid membrane / stroma

Tags

NGSS.HS-LS1-5

When oxygen is released as a result of photosynthesis, it is a direct by-product of

• reducing NADP+

• splitting water molecules

• chemiosmosis

• electron transfer in photosystem II and I

Which of the following is NOT a way that enzymes speed up chemical reactions?

• strain bonds in the structure

• orient reacting molecules

• provide favorable environment

• increase required energy of activation

Which environmental conditions can cause denaturation of the enzyme?

• slight increase in temperature

• extreme increase in temperature

• decrease in temperature

• extreme increase in temperature and pH changes

Describe the difference between competitive and noncompetitive inhibitors.

• noncompetitive binds to active site and competitive binds to other site

• competitive binds to active site and noncompetitive binds to other site

• competitive is irreversible and noncompetitive is reversible binding

• noncompetitive is irreversible and competitive is reversible binding

Where did photosynthesis first evolve?

• prokaryotic organisms

• alien organisms

• eukaryotic organisms

• abiotic processes

Tags

NGSS.HS-LS4-2

Which process does NOT require oxygen?

• Glycolysis

• Oxidative Phosphorylation

• Krebs Cycle

• Aerobic respiration

Where does glycolysis take place?

• Cytosol

• Mitochondrial Matrix

• Mitochondrial Cristae

• Stroma

• Thylakoid Membrane