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Central Texas College BIOL MISC Chapter 5 Scientific American Activities Quiz 1)What makes sea slugs different than any other animal?      They have one of the genes necessary for photosynthesis

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Central Texas College

BIOL MISC

Chapter 5 Scientific American Activities Quiz

1)What makes sea slugs different than any other animal?

     They have one of the genes necessary for photosynthesis.

     They produce chloroplasts in their skin which photosynthesize.

    They have unpigmented skin that light can penetrate.

     They only digest part of the organisms they consume.

2.            How long can a sea slug live off of just photosynthesis if it eats enough algae?

     four months    

nine months    

ten weeks

     three weeks

3.            How do sea slugs utilize algae for photosynthesis? Select the TWO answers that are correct.

They attach algae to their upper surfaces forming a garden.

They extract chloroplasts from algae they eat.

They graze off the algae they carry around with them.

They live off the sugars produced by stored chloroplasts.

 

4.            How has using corn to make ethanol affected the human food market?

     It has made the corn used for food more expensive.

     It has prompted research on new ways to use corn for food.

    It has encouraged farmers to use corn as cattle feed.

     It has increased the amount of corn available for food.

5.            How could harvesting native plants on marginal lands as a biofuel source affect wildlife conservation efforts?

Taking native plants from marginal lands for fuel would reduce runoff into streams used by wildlife.

Using native plants for biofuel would only harm wildlife that depends on the native plants for food.

Cutting native plants for fuel would reduce the usefulness of plants as wildlife habitat on marginal lands.

     Removing native plants on marginal lands would encourage growth of better food plants

 

for wildlife.

6.            What are the benefits of using native plants instead of corn to create biofuels? Select the TWO answers that are correct.

Native plants produce twice as much biofuel as corn without the use of fertilizer.

Native plant biofuel produces less carbon dioxide emissions than corn biofuel.

Native plant biofuel can be processed in different refineries than those used for corn.

Native plants can be grown on marginal lands that will not support crops.

 

7.            Blue-green algae are not really algae. What kind of organism are they?

     plants that live in salt or fresh water   

 seaweed that live in the deep ocean    

bacteria that photosynthesize

     fungi that can tolerate low light

8.            How did the podcast suggest the color-shifting abilities of blue-green algae might be applied to two other fields of study? Select the TWO answers that are correct.

Their ability to produce different proteins with the same enzyme may have medical use.

Their ability to capture carbon dioxide may be useful in reducing climate change impacts.

Their ability to photosynthesize may mean they could be used as a new food source for humans.

 

Their ability to live at several ocean depths may be useful to biologists studying deep ocean fish.

 

9.            How do blue-green algae change to optimize the amount of energy captured from light?

One enzyme in the blue-green algae functions in green light and the other functions in blue light.

A protein in the blue-green algae is green in shallow water and turns blue in deeper water.

One protein in the blue-green algae makes an enzyme change color as the water gets deeper.

An enzyme in the blue-green algae produces different proteins for catching light at different depths.