SS Bio Unit 4 Lesson

Unit 4: Energy Transfer

Multiple Choice

Which choice correctly shows the gases that enter and exit plants during photosynthesis?

• Enter: Oxygen
  Exit: Carbon dioxide

• Enter: Water vapor
  Exit: Glucose

• Enter: Carbon dioxide
  Exit: Oxygen

• Enter: Light
  Exit: Water vapor

Multiple Choice

Why do plants conduct photosynthesis?

• To make light

• To make mitochondria

• To make glucose

• To release carbon dioxide

Multiple Choice

Which organelle is responsible making food (Glucose) using sunlight?

• Cell Membrane

• Nucleus

• Chloroplast

• Mitochondria

Multiple Choice

Which of the following is the correct equation for PHOTOSYNTHESIS?

• light + carbon dioxide + water --> glucose + oxygen

• carbon dioxide + sugar + water --> oxygen + light

• oxygen + light + water --> carbon dioxide + sugar

• carbon dioxide + oxygen + water --> Light+ Sugar

Dropdown

During photosynthesis ​

Select answer

energy is converted into ​

Select answer

energy.

Multiple Select

Which organisms are capable of performing photosynthesis?

• some bacteria

• animals

• algae

• plants

Cellular Respiration

How does this process relate to photosynthesis?

Multiple Choice

Cellular respiration is...

• the process by which cells break down glucose into energy.

• the process by which cells break light down into energy.

• the process by which cells communicate with other cells.

Multiple Choice

In which way are photosynthesis and cellular respiration different?

• Cellular respiration stores ATP, while photosynthesis releases ATP.

• Cellular respiration produces oxygen, while photosynthesis uses oxygen.

• Photosynthesis releases energy, while cellular respiration stores energy.

• Photosynthesis uses carbon dioxide, while cellular respiration produces carbon dioxide.

Multiple Choice

Cellular respiration occurs in

• chloroplasts

• mitochondria

• golgi aparatus

• thylakoid

Multiple Choice

Which type of organism would MOST likely benefit directly from increased levels of CO2?

• mushroom

• tree

• bird

• fish

Multiple Choice

How can energy from the sun be transferred to animals?

• The sun's energy is transformed into food by plants, animals eat plants as food so that they can transform that food into energy.

• Plants produced energy through photosynthesis, animals that eat that energy can produce food.

• Plants transformed energy of the sun into gases that animals can breath in to use as energy through respiration.

• Animals are able to use energy from the sun by eating the plants that provides energy for the animals.

Multiple Choice

Giraffes have long necks that help them reach leaves high up in trees. They get all the energy they need from plants such as this. What type of consumer are giraffes.

• carnivore

• omnivore

• herbivore

• decomposer

Multiple Choice

Mushrooms often grow around dead plants such as decomposing trees. They break down these dead organisms and put energy that stores in the plant back into the ground for other plants to use. What type of consumer are mushrooms?

• carnivore

• omnivore

• herbivore

• decomposer

Draw

Circle every secondary consumer in red

Reorder

Put this food chain in the correct order

• Grass

• Rabbit

• Snake

• Hawk

1

2

3

4

• 1
• 2
• 3
• 4

Fill in the Blank

What organism is missing from this food chain?

Shrub -> ________ -> Insect Eating Bird -> Hawk

Humans on a Food Web

​Depending on a human's diet they will fall on a different consumer level.

​Trophic Levels Reading

"Humans, for example, are primary consumers when they eat plants such as vegetables. They are secondary consumers when they eat cows. They are tertiary consumers when they eat salmon."​

• As discussed, food webs are interconnecting food chains for multiple organisms

• However, they're also a map of how energy & nutrients get passed along

​

Food webs

Food webs show the direction energy moves; the arrows indicate the flow of an organism's energy from one trophic level to another.

• Ex: the shark eats the tuna, gaining energy

Energy flow

Energy dropoff

• Available Kcal decreases every time you move up a trophic level

• Only about 10% of energy in an organism is gained by eating it

• Ex: There could be a total of 1,000 Kcal in a bowl of lettuce. If you eat it, your body only gains 100 Kcal

• This is ten percent PER LEVEL increase; so if a fish eats a 100 KCal mayfly, and you eat that fish, you only gain 1 Kcal worth of that bug's energy! (100 x 0.1 x 0.1 = 1)

Multiple Choice

How much energy is passed along every trophic level increase?

• 50%

• 25%

• 100%

• 10%

Multiple Choice

A gopher has gained 200 Kcal from eating grass all day. A snake comes along and eats that gopher, gaining a portion of those Kcal. A hawk swoops down and eats the snake; how many trophic levels have we moved up?

• 2

• 3

• 4

• 5

Math Response

A gopher has gained 200 Kcal from eating grass all day. A snake comes along and eats that gopher, gaining a portion of those Kcal. A hawk swoops down and eats the snake; how many Kcal from the grass is transferred to the hawk?

Type answer here

Correct Answer: 2

Deg^°

Rad

SImilar to a food chain or web, energy pyramids are a diagram that show us the amount of energy that moves from one trophic level to another

​

Energy Pyramid

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