Leaving Cert Biology Photosynthesis

Which of the following is the correct equation for PHOTOSYNTHESIS?

• CO₂ + light + H₂O --> O₂ + Sugar

• CO₂ + sugar + H₂O --> O₂ + light

• _O2 + light + H₂O --> CO₂ + Sugar

• CO₂ + O₂ + H₂O --> Light+ Sugar

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NGSS.HS-LS1-5

NGSS.HS-LS2-5

Which plant organelle transforms light into glucose to use as food?

• Mitochondria

• Vacuoles

• Chloroplasts

• Nucleus

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NGSS.HS-LS1-5

The Calvin Cycle occurs in the

• Thylakoid

• Grana

• Inner membrane of chloroplast

• Stroma

Where do the light reactions happen?

• mitochondria membrane

• thylakoid membrane

• stroma

• central vacuole

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

Choose the statement that best describes light reaction.

• It converts CO2 to sugar molecule

• It converts light energy to chemical energy of ATP and NADPH

• It takes place in the stroma

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NGSS.HS-LS1-5

Where does CO2 enter the leaves through?

• Roots

• Stem

• Chloroplasts

• Stomata

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NGSS.MS-LS1-6

Which of the following would have the least affect on photosynthetic rate?

• increase the temp from 20 C to 30 C

• increasing the CO2 from 400 ppm to 600ppm

• increasing the light intesity from 40 Watts to 60 Watts

• increasing the amount of O2 from 20% to 30% in the air

Tags

NGSS.HS-LS1-5

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 are the two products of photosynthesis?

• Oxygen and Carbon Dioxide

• Oxygen and Sugar
  

• Sunlight and Sugar

Tags

NGSS.MS-LS1-6

Which of the following is not needed to start the light reaction

• H2O

• ADP + P

• CO2

Tags

NGSS.HS-LS1-5