Understanding Evolution and Natural Selection

What is the fundamental idea behind the theory of evolution?

• Life began as complex organisms and became simpler over time.

• Life began as complex organisms and remained unchanged.

• Life began as simple organisms and evolved into more complex forms.

• Life has always existed in its current form.

What was the significance of Darwin's observations on the Galapagos Islands?

• He observed variations among species that led to the idea of natural selection.

• He concluded that species do not change over time.

• He found that all species on the islands were identical.

• He discovered new species that had never been seen before.

Which of the following is NOT a stage of natural selection?

• There is competition for resources.

• Offspring show variation.

• Beneficial traits are passed to the next generation.

• All offspring survive and reproduce.

How does natural selection lead to evolution over time?

• By creating new species instantly.

• By eliminating all variations within a species.

• By favoring individuals with beneficial traits that are passed on to future generations.

• By ensuring all individuals survive and reproduce.

How did Darwin's finches demonstrate the concept of speciation?

• They did not show any variation in beak shape.

• They evolved different beak shapes to adapt to the food available on their specific islands.

• They chose their beak shapes based on preference.

• They all had the same beak shape regardless of the island.

What is speciation?

• The process by which species migrate to new environments.

• The process by which species become extinct.

• The process by which a single species evolves into multiple species.

• The process by which species remain unchanged.

Why are bacteria able to evolve resistance to antibiotics so quickly?

• They do not mutate.

• They reproduce very quickly, allowing rapid evolution.

• They reproduce very slowly.

• They are unaffected by environmental changes.

What is a superbug?

• A plant that is immune to herbicides.

• A virus that cannot be treated with vaccines.

• A bacterium that has become resistant to antibiotics.

• A type of insect that is resistant to pesticides.

What has contributed to the rise of antibiotic-resistant bacteria?

• Overuse of antibiotics for viral infections.

• Improved hygiene practices.

• Decreased use of antibiotics.

• Increased use of vaccines.

What role do mutations play in the evolution of bacteria?

• Mutations have no effect on bacteria.

• Mutations can lead to antibiotic resistance, allowing bacteria to survive and reproduce.

• Mutations prevent bacteria from reproducing.

• Mutations always harm bacteria.