Question

1. The main pigment in leaves A. Chlorophyll B. Chloroplasts C. Plastids D. Carotonoid 2. The main products of photosynthesis are: A. Glucose and water B. Water and carbon dioxide C. ATP and NADPH D. Glucose and oxygen E. Oxygen and water 3. This is the Chemical equation for Photosynthesis 6CO2 + 6H2O + [light energy] → 6O2 + C6H12O6 A. True B. False 4. The main colors used by plants in photosynthesis are A. Purple and Green B. Blue and Yellow C. Red and orange D. Red and Blue E. Purple and Blue 5. Light Dependent reactions occur in the A. Stroma B. Thylakoids C. Mitochondria D. Cytoplasm 6. The process of breaking apart water is called A. Photolysis B. Hydrolysis C. Photosynthesis D. Osmosis 7. What products of the light dependent reactions are used in the light independent reactions? A. ATP and Oxygen B. Oxygen and Water C. NADPH and ATP D. Carbon Dioxide and Water E. Electrons and Water 8. What molecule joins with carbon dioxide at the beginning of the Calvin Cycle? A. RuBP B. PGA C. Glucose D. ATP E. NADPH 9. What gas is given off by plants? A. Carbon Dioxide B. Oxygen C. Nitrogen D. Hydrogen

Answer 1

1). A. chlorophyll

Chlorophyll is a green pigment found in leaves and is important biomolecule to carry out photosynthesis, which allows plants to absorb energy from light.

2).Glucose and oxygen

A single reaction in photosynthesis will create one glucose molecule and six oxygen molecules.

3). True

The balanced equation for photosynthesis is: 6CO2 + 6H2O + sunlight energy = C6H12O6 + 6O2 Photosynthesis can be represented using a chemical equation: Carbon dioxide + water + light energy gives a carbohydrate + oxygen.

4). D. Red and Blue

Chlorophyll absorbs light most strongly in the blue portion of theelectromagnetic spectrum, followed by the red portion.

5). B. Thylakoids

In photosynthesis, the light-dependent reactions take place on the thylakoid membranes. The inside of the thylakoid membrane is called the lumen, and outside the thylakoid membrane is the stroma, where the light-independent reactions take place.

6). A. Photolysis

Photolysis. When the electrons leave the chlorophyll molecules, it leaves behind a 'hole.' This electron hole is filled in by a water molecule that is oxidized, or loses electrons, as it essentially splits into two hydrogen atoms, or protons, and an oxygen atom.

7). C. NADPH and ATP

Although the light-independent reactions do not use light as a reactant (and as a result can take place at day or night), they require the products of the light-dependent reactions to function. The light-independent molecules depend on the energy carrier molecules, ATP and NADPH, to drive the construction of new carbohydrate molecules.

8). E. NADPH

The sum of reactions in the Calvin cycle is the following:

3 CO2 + 6 NADPH + 5 H2O + 9 ATP → glyceraldehyde-3-phosphate (G3P) + 2 H⁺ + 6NADP⁺ + 9 ADP + 8 P_i   (P_i = inorganic phosphate)

9). B. Oxygen

During photosynthesis: Light energy is absorbed by chlorophyll, a green substance found in chloroplasts in some plant cells and algae. Absorbed light energy is used to convert carbon dioxide (from the air) and water (from the soil) into a sugar called glucose. Oxygen is released as a by-product.