AP Biology Responses to Environment

How many sugar molecules are produced from every six molecules of carbon dioxide that enter the Calvin cycle?

• 1

• 3

• 6

• 12

Tags

NGSS.HS-LS2-5

Photosynthesis goal is to

• convert light energy into glucose energy

• use light energy to make oxygen gas

• convert sugar energy into ATP

• convert sugar energy into oxygen gas

Tags

NGSS.HS-LS1-5

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

ATP is made during the light reaction using all of the following EXCEPT

• proton pump

• hydrogen ion gradient

• electron energy from photosystem II

• NADPH donating electrons

Which plant would have the most oxygen produced in 1 hour?

• plant given red light only

• plant given blue light only

• plant given white light

• plant given green light only

Tags

NGSS.HS-LS1-5

Green plants reflect ________ light.

• Red

• Green

• All

• Red and Violet

Tags

NGSS.MS-LS1-6

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

• Chloroplast / thylakoid membrane

• stroma / thylakoid

• mesophyl / stomata

• thylakoid membrane / stroma

Tags

NGSS.HS-LS1-5

The H+ concentration gradient is used to 

• make NADPH

• split a water molecule

• generate ATP

• form water

Tags

NGSS.HS-LS1-5

The NADP+ is

• oxidized during the light reaction

• reduced during the light reaction

• oxidized during the Calvin cycle

• reduced during the Calvin cycle

Which of the following is a primary response of plants to environmental stress?

• Photosynthesis

• Transpiration

• Stomatal closure

• Cell division