AP Biology Exam Review

What type of transmembrane receptor is being shown?

• G-protein coupled receptor

• tyrosine kinase receptor

• gated ion channel

When glucose levels in the blood rise, your brain sends a signal to your pancreas. The pancreas releases insulin, which opens channels in cell membranes to allow glucose to enter the cell, lowering blood sugar levels. 

• Positive Feedback Response

• Negative Feedback Loop 

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What role do NADH and FADH2 (produced during Glycolysis and Krebs Cycle) play in cellular respiration?

• they carry high energy electrons that eventually produce massive amounts of ATP

• They carry high energy H+ ions for chemiosmosis

• They are waste products and are pushed out of the cell

• They don't play any role in cellular respiration and are used in photosynthesis only

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The process of glycolysis results in which of the following molecules?

• NADH

• Pyruvate

• Glucose

• ATP

If the proton (H+) pump in the thylakoid was not working which molecule could not be made during the light reaction?

• NADPH

• ATP

• Water

• Oxygen gas

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.

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What is the primary function of the light reactions of photosynthesis?

• To produce glucose

• To produce NADPH and ATP

• To use ATP

• To produce RuBP

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What supplies the electrons that are lost in PS I?

• the electrons from PS II

• water

• glucose

• oxygen

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What is the function of NADP+?

• It absorbs light

• It is an electron acceptor

• It is a light-reflecting pigment

• It acts as long-term energy storage

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

• Chloroplast / thylakoid membrane

• stroma / thylakoid

• mesophyl / stomata

• thylakoid membrane / stroma

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