Unit 3 part 1

Photosynthesis

Multiple Choice

Which lettered graph represents the effect of temperature on photosynthetic rate?

• A

• B

• C

• D

Multiple Choice

Look at the diagram. Which gas would most likely be found in the greatest amount in the bubbles?

• oxygen
• nitrogen
• ozone
• carbon dioxide
  

Multiple Choice

Which lettered graph represents the affect of light intensity on photosynthetic rate?

• A

• B

• C

• D

Multiple Choice

Which of these will not affect photosynthesis?

• Light
• Temperature
• Glucose Availability
• Carbon Dioxide

Multiple Choice

What is a limiting factor?

• The factor which increases the rate of a reaction
• The factor that limits the reaction rate
• The factor that limits the rate at which an enzyme is destroyed

Multiple Choice

If starch is present in the leaf, the leaf should turn what colour?

• Blue/Black

• Orange

• Red

Multiple Choice

What do we use to test for starch?

• Fluorine solution

• Chlorine solution

• Iodine solution

Multiple Choice

To show that photosynthesis has occurred we test for starch. Why?

• Starch is a product of photosynthesis

• Not sure

• Glucose is a product of photosynthesis and is stored in the plant cells as starch

Multiple Choice

What colour does the leaf turn after being in ethanol?

• It stays green

• It turns blue

• It turns white

Multiple Choice

What is chlorophyll soluble in?

• Ethanol

• Water

• Don't Know

Multiple Choice

Why do we turn off the bunsen flame before adding ethanol?

• Not sure

• To save on gas

• Because ethanol is extremely flammable

Multiple Choice

Why do we boil the leaf?

• To keep it warm

• To denature the enzymes and so stop photosynthesis

• To make photosynthesis go faster

Multiple Choice

What molecule absorbs sunlight for photosynthesis?

• chloroplast
• thylakoid
• grana
• chlorophyll

Multiple Choice

What are the products of photosynthesis?

• water and carbon dioxide

• oxygen and glucose

• oxygen and carbon dioxide

• oxygen and water

Multiple Choice

What does the 'photo' suggest when it is at the start of a word?

• linked to the eyes

• linked to cameras

• linked to light

Multiple Choice

During photosynthesis, the energy from the sun is used to split water molecules into hydrogen and oxygen.

• True

• False

Multiple Choice

How are the nutrients delivered to the plants in hydroponic systems?

• Through the water
• It is placed in the growing media
• It is sprinkled on the plants
• It is already present in the growing media

Multiple Choice

What does "ponics" mean?

• water
• soil
• destroy
• cultivate

Multiple Choice

What does "hydro" mean?

• plant
• hidden
• system
• water

Multiple Choice

What is not used in a hydroponics system?

• soil
• water
• light
• nutrients

Multiple Choice

What is a major ADVANTAGE of the hydroponic system.

• It costs very little
• Plants grow slower
• It has many weeds
• It is low maintenance

Multiple Choice

What is a major DISADVANTAGE of the hydroponic system?

• High start up costs
• Low maintenance
• Less weeds
• More water will be used

Multiple Choice

Which one of the following statements is an accurate description of genes?

• DNA is made of carbohydrates that code for genes

• Genes are made of DNA and code for proteins.

• Genes are made of proteins that code for nitrogen bases.

• Proteins are made of genes and code for DNA

Multiple Choice

In the diagram, what was used to "cut" the DNA?

• enzymes

• genes

• receptors

• clones

Multiple Choice

A farmer grows beans that he sells to local markets. Over a period of 40 years, the farmer has identified the plants that produced the most beans and only used those beans to produce new plants. This procedure is part of the process of

• selective breeding

• replication

• cloning

• gene splicing

Multiple Choice

In 1996, scientists cloned the first mammal, a sheep. This technique involved the removal of the nucleus from an egg cell. The nucleus from a cell of another adult sheep was then inserted into this egg cell. Once this cell began to develop into an embryo, it was implanted into a third female sheep that later gave birth to a healthy lamb, Dolly. Which one of the following statements concerning Dolly is correct?

• Her offspring would be genetically identical.

• Dolly was produced by the recombination of genetic material.

• Dolly and her DNA donor are genetically identical.

• Two different gametes were manipulated to produce Dolly

Multiple Choice

A positive reason(s) to genetically modify (GMOs) foods include...

• Produce larger fruits

• Make pest resistant vegetables

• Produce foods that grow faster

• All of these are positives of GMOs

Multiple Choice

What is NOT a reason to genetically modify plants? 

• To make the plants poisonous to insects
• Make plants drought resistant 
• To produce fewer plants
• Improve the nutrition of food grown

Multiple Choice

Which of the following statements best describes the term photosynthesis?

• When plants absorb the energy from the sun.

• How plants reproduce.

• The process by which plants make their own food.

• The process by which animals make their own food.

Multiple Select

Which of the following is needed for the process of photosynthesis?

• Water

• Oxygen

• Starch

• Carbon dioxide

Multiple Choice

Chlorophyll is:

• The substance that makes plants green.

• Found inside the chloroplast cells.

• Used to absorb energy from the sun.

• All of the above.

Multiple Choice

The openings that are found in the leaves of plants are called:

• Stomata

• Chlorophyll

• Xylem

• Chloroplast

Multiple Choice

The process of photosynthesis takes place in the:

• Leaves of the Plant.

• Stem of the plant.

• Roots of the plant.

• All of the above.

Multiple Choice

Why are plants considered autotrophs

• They make their own food

• They provide food for others

Multiple Choice

The main source of energy for all life comes from ____.

• the Earth
• the moon
• the sun
• the food we eat/make

Multiple Choice

What part of the plant soaks up water for photosynthesis?

• roots

• leaf

• petals

• stem

Multiple Choice

Which of the following is NOT needed for plants to survive?

• Sunlight

• Pesticides

• Water

• Carbon Dioxide

Multiple Choice

What is produced as a result of photosynthesis?

• glucose and chlorophyll

• water and light energy

• glucose and oxygen

• carbon dioxide and water

Multiple Choice

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

Multiple Choice

What is the pigment in chloroplasts that performs photosynthesis?

• Chlorosynthesis
• Chlorophyll
• ADP
• Electron Transport

Multiple Choice

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

• 6O₂+ 6H₂O → C₆H₁₂O₆+ 6O₂

• C₆H₁₂O₆ + 6H₂O→ 6O₂+ 6O₂

• 6CO₂+ 6H₂O→ C₆H₁₂O₆+ 6O₂

• 6O₂ + 6H₂O→ C₆H₁₂O₆ + 6CO₂

Multiple Choice

What happens to the O₂ created in the light phase?

• Is transferred to the Calvin Cycle
• Donates its electrons to the Chlorophyll molecules
• Provides a carbon to form the unstable 6-carbon molecule
• Diffuses out through the stoma

Multiple Select

The rate of photosynthesis can be influenced by...

• Temperature

• Carbon dioxide levels

• Light intensity

• Oxygen concentration

Multiple Choice

Temperatures that are too high can slow photosynthesis because

• stomata stay open

• enzymes are ruined

• there is not enough CO2

• there is too much water

Multiple Choice

What does a plant need for photosynthesis - choose the correct combination

• carbon dioxide, water, oxygen and minerals

• carbon dioxide, water, light and minerals

• oxygen, glucose, water and light

• carbon dioxide, oxygen, water and glucose

Multiple Choice

Which of the following are examples of plant organs?

• heart, lungs and blood vessels

• stomach, gullet, small intestine

• roots, leaves and stems

• bone, muscle, tendon

Multiple Choice

Which of these is the definition of an organ

• a group of similar cells working together

• a group of similar tissues working together

• a cell that does a specific job