Question

28) Fill in the table below (4 POINTS) AG positive or negative? Catabolic or anabolicy Spontaneous or nonspontaneous? Release energy or consume energy? Exergonie reactions Endergonic reactions 29) TRUE FALSE Questions (10 POINTS) Cellular respiration is a catabolic process Photosynthesis is a catabolic process Enzymes speed up reactions by increasing the change in free energy (AG) Competitive inhibitors function by binding in the active site of enzymes The electron transport chain ceases to exist in anaerobic respiration The citric acid cycle releases ATP, whereas the calvin cycle uses ATP Photosystem I is best at absorbing a wavelength of 700, whereas photosystem II is best at absorbing a wavelength of 680 In order to fully break down one molecule of glucose, the citric acid cycle has to turn three times Potential energy is energy associated with motion, whereas kinetic energy is energy associated with location or structure In order to produce one molecule of glyceraldehyde-3-phosphate, the calvin cycle has to turn a total of three times 30) Starting with one molecule of glucose, what are the products of the citric acid cycle? (2 POINTS)

Answer 1

	ΔG positive or negative	Catabolic or anabolic	Spontaneous or non-spontaneous	Releases energy or consume energy
Exergonic reactions	Negative	Catabolic reaction	Spontaneous	Energy released
Endergonic reactions	Positive	Anabolic reaction	Non spontaneous	Energy consumed

Catabolic reaction: These reaction convert energy from fuels into biologically useful form. These reaction release energy.

Fuel ( Carbohydrate ) ------------> CO2 + H2O + useful energy

Anabolic reaction: These reaction require energy such as synthesis of glucose, fats or DNA.

Useful energy + Simple precursors ---------> Complex molecule

Answer 29:

Cellular respiration is a catabolic process : TRUE

It is a catabolic process because in this process large molecules are broken down into smaller ones.

Photosynthesis is a catabolic process: FALSE

It is a anabolic process because carbon di oxide and water gets combined in the presence of light to make large molecule that is glucose.

Enzymes speed up reaction by increasing the change in free energy ( ΔG) : FALSE

Enzymes decrease the Gibbs free energy of activation, but they have no effect on the free energy of reaction.

Competitive inhibitors function by binding in the active site of enzyme: TRUE

The competitive inhibitor resembles the substrate and binds to the active site of the enzyme.

The electron transport chain ceases to exist in anaerobic respiration: TRUE

Oxygen is the final electron acceptor in the electron transport chain, if no oxygen is available electron transport chain cannot occur.

Photosystem I is best at absorbing a wavelength of 700, whereas photosystem II is best at absorbing the wavelength of 680: TRUE

Photosystem I uses light energy to convert NADP+ to NADPH2. It involves the P700, chlorophyll and other pigments.

Photosystem II is the protein complex that absorbs light energy, involving P680, chlorophyll and accessory pigments and transfer electrons from water to plastoquinone and thus works in dissociation of water molecules and produces protons (H+) and O2.

In order to fully break one molecule of glucose, the citric acid cycle has to turn three times: FALSE

Since there are two pyruvate molecules made from each molecule of glucose, this means that the citric acid cycle runs two times.

Potential energy is energy associated with motion, whereas kinetic energy is energy associated with location or structure: FALSE

The energy associated with motion is called kinetic energy .The energy associated with position is called potential energy.

In order to produce one molecule of glyceraldehyde-3-phosphate, the Calvin cycle has to turn a total of three times: TRUE

Answer 30 :

Glucose АТР ATP - F-1, 6-bie phosphate DHAP (Dihydroxy acetone GAP LTNADH phosphate) ATP PEP LYAT Pyruvate | Co, 12e Acetyl CoA Citric =2002 acid cycle GIP 8e

Net reaction of the Citric acid cycle ikin Acetyl CoA + 3NaDt + FAD + GDP + P + 2H2O 2002 + 3 NADH + FADH₂ + GTP + 2H + CA