Natural Selection

What causes strep throat?

• A virus

• A fungus

• A bacterium

• A parasite

In a biological context, what determines an organism's fitness?

• How long the organism lives.

• The organism's physical strength.

• The number of offspring the organism produces.

• The organism's ability to adapt to new environments.

How do variations and mutations arise in organisms?

• Organisms can will themselves to have specific traits.

• They are random occurrences.

• They are always beneficial for survival.

• They are a direct response to environmental changes.

What is natural selection?

• Natural selection is the process by which organisms that are better adapted to their environment survive and reproduce more successfully.
• Natural selection is the belief that species do not change over time.
• Natural selection is the method by which all organisms are equally likely to survive.
• Natural selection is the process of random genetic mutations.

Why is it important to only take antibiotics for bacterial infections and not for viral infections?

• Antibiotics are ineffective against viruses and contribute to antibiotic resistance.

• Antibiotics can cause severe side effects when taken for viral infections.

• Viral infections require different types of medication that are not antibiotics.

• Taking antibiotics for viral infections can weaken the immune system.