Introduction to Biology: Crash Course Biology #1

What is the study of life called?

• Chemistry

• Physics

• Biology

• Geology

Which of the following is a key characteristic of life, according to modern biologists?

• The ability to be squishy and slimy

• The ability to respond to external stimuli

• The ability to be made of mud

• The ability to evolve over generations

What is "regulation" in the context of living things?

• The ability to grow larger over time

• The process of passing genetic information to offspring

• The ability to keep inner conditions steady despite outer changes

• The way organisms are structured from cells to organ systems

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What essential life processes are viruses unable to perform independently?

• Reproduce, grow, and process energy.

• Self-regulate and evolve.

• Infect host cells and spread.

• Synthesize proteins and genetic material.

Why is the scientific definition of life subject to ongoing discussion and potential revision?

• Because future discoveries, such as extraterrestrial life, could broaden our understanding.

• Because the criteria for classifying organisms as living are inherently ambiguous.

• Because certain entities, like viruses, blur the lines between living and non-living.

• Because technological advancements allow for the creation of synthetic life forms.