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Photosynthesis part 1

Photosynthesis part 1

Assessment

Presentation

Biology

11th Grade

Medium

NGSS
HS-LS1-5, MS-LS1-6, HS-LS1-7

+2

Standards-aligned

Created by

Leonita Swandjaja

Used 1+ times

FREE Resource

19 Slides • 33 Questions

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Chloroplast Structure

Chloroplasts, the organelles responsible for photosynthesis in plant cells, exhibit a complex structure tailored for efficient energy capture and conversion.

  • Double membrane: Encloses the chloroplast, separating it from the cell cytoplasm.

  • Stroma: A fluid-filled matrix surrounding the thylakoids. It's the site of the light-independent stage (Calvin cycle) of photosynthesis.

  • Thylakoids: Flattened, disc-like sacs arranged in stacks called grana. The membranes of thylakoids contain pigments and electron carriers essential for light-dependent reactions.

  • Grana: Stacks of thylakoids, increasing the surface area for light absorption.

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Multiple Choice

Which specific structure within the chloroplast is responsible for capturing light energy?

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Stroma membrane

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Thylakoid membrane

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Photosystem matrix

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Chlorophyll layer

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Multiple Choice

What is the fluid-filled space inside the chloroplast where the light-dependent reactions take place?

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stroma cavity

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photosystem chamber

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thylakoid lumen

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chlorophyll reservoir

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Multiple Choice

What is the significance of the stroma in chloroplasts?

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Location of photosynthesis

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Storage of water

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Production of ATP

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Site of the Calvin cycle

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Multiple Choice

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In which part of the chloroplast would you find the light absorbing pigment Chlorophyll?

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Inner and Outer membrane

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Lamellae

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Intermembrane Space

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Thylakoid

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Multiple Choice

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Stacks of Thylakoids are called...

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Inner and Outer membrane

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Lamellae

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Intermembrane Space

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Granum

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Multiple Choice

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Thylakoids can be connected to each other using...

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Inner and Outer membrane

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Lamellae

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Intermembrane Space

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Granum

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Multiple Choice

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What is this organelle?

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Ribosome

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Mitochondria

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Chloroplast

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Centriole

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Multiple Choice

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Inner Membrane
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Outer Membrane
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Thylakoid Membrane
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Frog Skins

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Multiple Choice

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What are the two products of the light reactions that are needed for the calvin cycle?
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NAD and NADPH
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NADP + and Glucose
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NADPH and ATP
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Oxygen and NADPH

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Multiple Choice

Which of the following equations represents the overall chemical reaction for photosynthesis?

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6O2+ 6H2O → C6H12O6+ 6O2

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C6H12O6 + 6H2O→ 6O2+ 6O2

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6CO2+ 6H2O→ C6H12O6+ 6O2

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6O2 + 6H2O→ C6H12O6 + 6CO2

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Multiple Choice

What happens to the Ocreated in the light phase?
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Is transferred to the Calvin Cycle
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Donates its electrons to the Chlorophyll molecules
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Provides a carbon to form the unstable 6-carbon molecule
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Diffuses out through the stoma

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Multiple Choice

Water is split during
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photophosphorylation

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photolysis

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calvin cycle
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cell respiration

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Multiple Choice

Temperatures that are too high can slow photosynthesis because

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stomata stay open

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enzymes are ruined

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there is not enough CO2

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there is too much water

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Multiple Choice

The light reactions of photosynthesis provides the Calvin cycle with...

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protons and electrons.

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ATP and NADPH

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CO2 and glucose.

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light and chlorophyll.

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Multiple Choice

The Calvin cycle is another name for the...

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light-independent reactions.

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light-dependent reactions.

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photosynthesis reaction.

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electron transport chain.

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Multiple Choice

Which of the following activities happens within the stroma?

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Photosystem I absorbs light.

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ATP synthase produces ATP.

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Electrons move through the electron transport chain.

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The Calvin cycle produces sugars.

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Multiple Choice

What are the products of the light-dependent reactions?

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ATP, NADPH, and oxygen gas

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ATP, carbon dioxide gas, and NADPH

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carbon dioxide gas, oxygen gas, and NADPH

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oxygen gas and glucose

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Multiple Choice

Where do the light-dependent reactions take place?

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in the stroma of the chloroplast

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within the thylakoid membranes

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within the mitochondria membranes

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in the outer membrane of the chloroplasts

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Multiple Choice

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The graph shows the absorption spectra of chlorophyll a and chlorophyll b. What can be concluded from the graph?

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A. Both chlorophyll a and chlorophyll b absorb a large amount of green light

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B. Chlorophyll b absorbs red light more efficiently than blue light

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C. Other pigments must absorb light between blue and red in the spectrum

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D. Chlorophyll a and chlorophyll b have different absorption peaks

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Multiple Choice

What prevents plants from converting carbon dioxide into glucose in the dark?

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A. They do not have a source of energy.

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B. It is too cold.

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C. They do not require glucose during the night.

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D. Their enzymes are inhibited.

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Multiple Choice

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Absorption spectra of two photosynthetic pigments are shown. Phycoerythrin is a red pigment found in many marine red algae, while chlorophyll a is the major pigment in green plants and algae. What do the absorption spectra show about the pigments?

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A.  Phycoerythrin absorbs mostly red light.

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B.  Chlorophyll a reflects more green light than phycoerythrin.

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C.  Chlorophyll a photosynthesizes more at 550 nm than phycoerythrin.

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D.  Phycoerythrin does not absorb blue light.

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Multiple Choice

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The graph shows how the rate of photosynthesis of a green plant varies with CO2 concentration at two different light intensities. The temperature is kept constant at 20 °C. What is the limiting factor at X?

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A. Chlorophyll

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B. Light intensity

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C. Temperature

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D. CO2 concentration

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Multiple Choice

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According to this absorption spectrum, what color is not used by the chlorophyll pigments?
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green
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blue
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yellow
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red

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Multiple Select

The rate of photosynthesis can be influenced by...

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Temperature

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Carbon dioxide levels

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Light intensity

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Oxygen concentration

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Multiple Choice

What is photosynthesis?
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The process in which humans eat their food
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When a photographer takes a photo.
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To get your pictures from the photo lab.
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The process in which plants make their food.

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Multiple Choice

Leaves look green because.....
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they eat their vegetables
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to blend into their environment
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they contain a molecule named chlorophyll
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they are sick

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Multiple Choice

Which statement about photosynthesis is correct?
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Plants get the energy they need for photosynthesis from water.
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Plants get the energy they need for photosynthesis from soil.
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Plants get the energy they need for photosynthesis from sunlight.
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Plants do not require energy to perform photosynthesis.

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Multiple Choice

What is the purpose of photosynthesis?
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make glucose
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make ATP
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make light
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release carbon dioxide

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Multiple Choice

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Most plants appear green because chlorophyll
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absorbs green light.
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absorbs violet light.
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reflects green light.
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does not absorb violet light.

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Multiple Choice

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Which gas is removed from the atmosphere during photosynthesis?
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hydrogen
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oxygen
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nitrogen
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carbon dioxide

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Multiple Choice

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Light energy is used to 
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split water into H and O
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weld C, H and O together
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make water

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Multiple Choice

Protons move into the thylakoid due to the
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concentration gradient in the stroma
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  Brownian motion of the protons.
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  peer pressure of the cool electrons in the stroma.  
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movement of electrons through the electron transport chain

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Multiple Select

Select all that are products of Photosynthesis.

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Water

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Carbon Dioxide

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Oxygen

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Sunlight (Light Energy)

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Glucose (Sugar/food)

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  • In summary, the chloroplast's structure, with its compartmentalization of functions, is optimized for photosynthesis. 

  • The thylakoids, equipped with pigments, harness light energy to produce ATP and NADPH. 

  • These energy-rich molecules fuel the Calvin cycle in the stroma, resulting in the synthesis of organic compounds.

Energy Transfer and Organic Molecule Synthesis

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