Long Quiz in General Biology 1

Which event occurs first during photosynthesis?

• Carbon dioxide enters through the stomata of the leaves.

• Chlorophyll changes molecules of carbon dioxide and water into glucose.

• Oxygen will be release

• Plants capture light energy and use that energy to make glucose.

What two main products result from photosynthesis?

• Carbon dioxide and water

• Glucose and oxygen

• Glucose and carbon dioxide

• Water and oxygen

Which equation describes the chemical reaction of photosynthesis?

• . 6 CO2 + 6 H20  C6H12O6 + 6 O2

• CHO + 02 CO2 + H20

• CO + HO  CHO + O

• CO2 + H20  C6H12O6 + 6 O2

Which equation describes the chemical reaction of respiration

• CO2 + H20  CHO + 02

• C6H12O6 + 6 O2 6 CO2 + 6 H20

• CO + HO CHO + O

• C6H12O6 + 6 O2 CO2 + H20

Which of the following does not happen during photosynthesis?

• Carbon dioxide enters the leaf through holes called pistil.

• CO2 combines with the stored energy in the chloroplasts through a chemical reaction to make glucose.

• The sugar is moved through tubes in the leaf to the roots, stems and fruits of the plants.

• Some of the sugar is used right away by the plant for energy; some is stored as starch; and some is built into plant tissue.

Which is true about the photosynthetic pigments?

• There is only one kind of chlorophyll

• Chlorophyll absorbs mostly green light.

• Chlorophyll is required in the Calvin cycle

• Chlorophyll is formed in the membrane of thylakoids

Which of the following describes Photosystem II?

I. Optimally absorbs photons of wavelength of 700 nm.

II. Electron trapped by P680 are energized by light.

III. Responsible in for providing low energy electrons with which to reduce NADP+ to produce NADPH to be used in the Calvin cycle.

IV. Electrons are energized by sunlight and passed to a secondary

• I

• II

• III

• IV

Which describes carbon fixation?

• The conversion process of inorganic carbon to organic compounds by living organisms.

• The conversion process of organic carbon to inorganic compounds by living organisms

• It forms a 6-carbon compound immediately converted into 2 threecarbon compounds.

• It forms 5-carbon compound immediately converted into 3 twocarbon compounds

Which describes the regeneration of RuBP?

• The conversion process of inorganic carbon to organic compounds by living organisms.

• The conversion process of organic carbon to inorganic compounds by living organisms.

• It forms a 6-carbon compound immediately converted into 2 threecarbon compounds.

• It forms 5-carbon compound immediately converted into 3 twocarbon compounds

Three turns of Calvin cycle are necessary to produce one net gain of PGAL. Five PGAL molecules are required to regenerate 3 molecules of RuBP. During the three turns how many molecules of ATP and NADPH are use up?

• 3, 6

• 6, 9

• 9, 6

• 6, 3