Chapter 8 Photosynthesis

Chapter 8 Photosynthesis

by Nikki Chenevert

Photosynthesis

Is a metabolic pathway that converts light energy into chemical energy in the form of sugars like glucose for food

Multiple Choice

What is the purpose of photosynthesis?

• To release energy

• To create glucose

• To grow

• To get oxygen for respiration

Multiple Choice

Photosynthesis is the process in which humans, and animals use energy from sunlight to produce sugar.

• True

• False

Chloroplasts:

organelles that contain specialized complexes to capture light energy

Multiple Choice

This is ...

• mitochondria
• chloroplast
• cell
• phloem

Autotrophs

  make their required organic molecules from CO₂ and other inorganic molecules like H₂O. (Producers: ultimate source of organic compounds)

Multiple Choice

An organism that produces its own nutrients from inorganic substances or from the environment instead of consuming other organisms.

• Autotrophs

• Heterotroph

• Omnitrophs

• Herbitrophs

Multiple Choice

Which terms best describe autotrophs?

• Plants; producers
• Animals; producers
• Plants; consumers
• Animals; consumers

Multiple Choice

What is another name to describe an autotroph?

• Consumer
• Producer

Multiple Choice

From where do autotrophs obtain their energy?

• The sun
• Other organisms

​use light energy to make their required organic molecules

Photoautotrophs

Multiple Select

which of the following statements are TRUE about organisms in the Domain Bacteria

• consist of bacteria and cyanobacteria

• some are photoautotroph

• genetic material is single stranded

• organelles are not present

Multiple Choice

Cyanobacteria are…

• Photoheterotrophs

• Photoautotrophs

• Chemoautotrophs

• Chemoheterotrophs

Multiple Choice

Where does the energy start in this food chain?

• Plant
• Sun
• Deer
• Wolf

Multiple Choice

Autotrophs that convert light energy into chemical energy are called ____.

• photoautotrophs

• heterotrophs

• chemoautotrophs

• omnivores

Multiple Choice

Using the energy of sunlight to make organic molecules from H2O and CO2

• Autotrophs

• Photoautotrophs

• Chemoautotrophs

​Heterotrophs

​need a source for organic molecules (Consumers and decomposers)

Multiple Choice

How can animals and fungi best be classified?

• Autotroph
• Heterotroph

Multiple Choice

What is another name to describe a heterotroph?

• Consumer
• Producer

Multiple Choice

Organisms that cannot make their own food and must obtain energy from external sources are called

• autotrophs
• heterotrophs
• thylakoids
• plants

Chloroplasts: The Sites of Photosynthesis in Plants

Most photosynthesis occurs in the leaves of plants

Multiple Choice

The ____________ is the most photosynthetic part of a plant.

• leaf
• flower
• roots
• stem

​Stomata: openings on the leaf surface that allow CO₂ in; O₂ and H₂O out.

​Mesophyll is the tissue in the interior of the leaf. Carbon dioxide enters the leaf, and oxygen exits, by way of microscopic pores called the stomata.

​Stroma fluid in the chloroplasts

Suspended within the stroma is a third membrane systems made up of sacs called Thylakoids.

​

thylakoid membranes

     Grana-stacks of thylakoids

Chlorophyll

​

the green pigment in leaves is located on the thylakoid membranes

Multiple Choice

The leaf structure that allows carbon dioxide to enter the leaf and Oxygen to exit the leaf is...

• phloem
• stomata
• vein
• stem

Multiple Choice

What part of the leaf allows Carbon dioxide in and oxygen out of the leaf?

• xylem
• phloem
• cuticle
• stomata

Multiple Choice

What color is chlorophyll?

• Green

• Blue

• Red

• Purple

Multiple Choice

The chloroplast has stacked membranes, what is the purpose of the stacked membranes in doing photosynthesis?

• water absorption for photosynthesis
• increased CO₂ absorption
• increase surface area
• support of the plant

Multiple Choice

What is the compound that plants use to absorb the energy from sunlight?

• Carbon dioxide

• Chlorophyll

• Nitrogen

• H2O

The light reactions convert solar energy to the chemical energy of ATP and NADPH

The Nature of Sunlight

​Excitation of Chlorophyll by Light

​A Photosystem: A Reaction-Center Complex Associated with Light Harvesting Complexes

​Linear Electron Flow

Tracking Atoms Through Photosynthesis

The reverse of cellular respiration

Multiple Choice

The formula for glucose is...

• C₁₂ H₂₂ O₁₁
• NaCl
• NaOH
• C₆ H₁₂ O₆

Multiple Choice

Glucose is a ...

• sugar
• carbohydrate
• source of quick energy
• all are correct

Multiple Choice

__________ is the process that plants use to breathe and make food.

• Photographs

• Oxygen

• Hydrogen

• Photosynthesis

Multiple Choice

If plants breathe in carbon dioxide, what do they breathe out?

• Nitrogen

• Oxygen

• Carbon monoxide

• Helium

Multiple Choice

Sunlight is the main source of energy that drives photosynthesis process.

• True

• False

Two Stages of Photosynthesis

LR and Calvin Cycle

Multiple Select

__________ and ______ are the 2 stages of photosynthesis.

• Cellular respiration

• Citric Acid C

• Light Reactions

• Calvin Cycle

Multiple Choice

What 3 things do plants need for the process of photosynthesis?

• Sunlight, oxygen and sugar.

• Water, soil and oxygen.

• Sunlight, carbon dioxide and water.

• Sunlight, soil and water.

Multiple Choice

The plants gets its nutrients from sugar, called __________.

• Galactose

• Fructose

• Sugar

• Glucose

Multiple Choice

This image correspond to___________.

• Flower

• Oxygen

• Carbon dioxide

• Sunlight

Multiple Choice

this image correspond to ___________.

• Water

• Chlorophyll

• Sunlight

• Oxygen

Multiple Choice

Chlorophyll absorbs ________ light.

• red - blue
• yellow
• green
• light greens

Multiple Choice

Photosynthesis occurs in:

• Mitochondria

• Chloroplasts

• Humans

• Animals

Multiple Choice

Mitochondria and Chloroplasts are:

• organelles

• cells

• only in humans

• only in plants

Multiple Choice

What opens and close the stomata?

• guard cells
• xylem
• phloem
• cuticle

Multiple Choice

Where do the light reactions happen?

• mitochondria membrane
• thylakoid membrane
• stroma
• central vacuole

Multiple Choice

Most plants appear green because chlorophyll

• absorbs green light.
• absorbs violet light.
• reflects green light.
• does not absorb violet light.

Multiple Choice

A leaf is the broadest part of the plant and this is good for photosynthesis because, the broad leaf....

• curls up when touched
• increases surface area
• catches rain water
• stores lipids for the plants

Multiple Choice

the products of photosynthesis are...

• glucose and sunlight
• carbon dioxide and water
• glucose and chlorophyll
• oxygen and glucose

Multiple Choice

The vascular tissue of the plant that transports water is the...

• roots
• phloem
• xylem
• stem

Multiple Choice

The reactant of photosynthesis are...

• sunlight and chlorophyll
• glucose and oxygen
• carbon dioxide and water
• sunlight and water

Multiple Choice

what is the major photosynthetic region of the leaf?

• palasade mesophyll layer
• spongy layer
• guard cells
• stomata

Multiple Choice

What are the reactants in Photosynthesis?

• Sun, CO2, glucose

• glucose and oxygen

• sun, carbon dioxide, water

• water, glucose

Multiple Choice

In photosynthesis, what kind of molecule does hydrogen start in?

• water

• oxygen

• glucose

• carbon dioxide

Multiple Choice

In cellular respiration, carbon starts out in the glucose molecule, but ends up in a(n)

• oxygen molecule

• water molecule

• CO2 molecule

• C6H12O2 molecule

Multiple Choice

In what process does ATP get created?

• photosynthesis

• cellular respiration

• radiation

• chemical

Multiple Choice

How do humans get glucose so they can live?

• breathe it in

• photosynthesis

• eat food

• drink liquids

Multiple Choice

Cellular respiration happens

• only in plants

• only in animals

• only in humans and animals

• in plants and animals

Multiple Choice

Where in a plant cell does photosynthesis take place

• Palisade cells

• Chlorophyll

• Chloroplasts

• Vacuole

Multiple Choice

The products of cellular respiration are

• air and water

• carbon dioxide, water, and ATP

• glucose and carbon dioxide

• ATP, glucose, and oxygen

Multiple Choice

Foods synthesized in the process of Photosynthesis by plants is stored as

• Starch

• Protein

• Vitamins

• Fats

Multiple Choice

Which of these is the correct equation for photosynthesis?

• 6O₂ + C₆H₁₂O₆ --> 6CO₂ + 6H₂O

• 6O_{2 +} 6CO_{2 -->} C₆H₁₂O_{6 +} 6H₂O

• 6CO₂ + 12H₂O --> C₆H₁₂O₆ + 6H₂O + 6O₂

• 6CO₂ + 6H₂O --> O₂ + C₆H₁₂O₆

Multiple Select

Which of these are limiting factors for photosynthesis? Choose 3 answers.

• Light intensity

• CO₂ concentration

• Temperature

• Light

• CO₂ levels

Multiple Choice

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

Multiple Choice

What is the main purpose of the light dependent reactions?

• To provide the energy for the calvin cycle
• To capture energy and make sugar
• To reflect green light
• To make sugars

Multiple Choice

What supplies the electrons during photolysis?

• oxygen

• water

• glucose

• rubisco

Multiple Choice

What is the unit of light?

• proton

• photon

• photosystem

Multiple Choice

Which part of a flower is known to attract pollinators?

• Stem

• Leaf

• Pollen

• Colorful Petals