Review part 4

What is most likely result of overusing a particular antibiotic?

• Fewer infections caused by bacteria resistant to the antibiotic

• More infections caused by bacteria resistant to the antibiotic

• Fewer infections caused by viruses and bacteria

• More infections caused by viruses

 Which illness could most likely be treated with antibiotics?

• Influenza

• Common cold

• Strep throat

• Diabetes

How can biotechnology help farmers overcome sudden changes in the global climate?

• By changing the types of soil in which the crops are planted

• By developing crops that are resistant to adverse weather

• By rotating the crops within the same field

• 1. By only planting crops in the winter 

How has biotechnology helped to improved the agricultural industry?

• 1. By developing irrigation systems that cover a large land area 

• 1. By creating some crops that resist certain insects 

• 1. By producing soil free of decomposers 

• 1. By developing machines that help farmers harvest crops faster. 

The table shows the food choices for two species of birds. Which will most likely happen to Questors as a result of Wood Plaxers migrating to their habitat.

• The Questors will compete with the Wood Plaxers for food resources

• 1. The questors will be forced to fly to a different habitat 

• The two species will become extinct

• The two species will coexist with no competition.

What happens to most of the energy as it moves throughout a food web?

• It is changed into light energy.

• It is changed into heat energy.

• It is changed into mass.

• It is changed into decomposers.

Which is the best evidence for evolution?

• New rock layers containing fossils of simple organism

• New rock layers containing fossils unlike existing organisms

• Old rock layers containing fossils unlike existing organisms

• Old rock layers containing fossils of complex organisms.

Which best explains why mammals became dominant after the mass extinction of the dinosaurs?

• They had traits that helped them adapt to environment changes.

• They were larger than dinosaurs and ate different foods.

• 1. They lived in different areas on earth than dinosaurs. 

• They were able to hibernate for thousands of years.

Which demonstrates how genetic variation may result from a change in the environment where an animal lives?

• A salmon swims faster as it enters colders waters.

• A snake increases its body temperature because it moves on top of a rock in direct sunlight.

• 1. A beetle stands out to predators because it moves among plants that have colors different than its own. 

• 1. An arctic fox changes its color over time because it migrates to an area with a different climate. 

Where do plants get the food they need for energy?

• They absorb it directly from the sun.

• They absorb it directly from the soil.

• They produce it during photosynthesis.

• 1. They receive it from atmospheric gases.