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"Characteristics of Biology" PPT courseware for understanding biology
Observation is the basic method of scientific inquiry
Basic requirements for observation:
1. Have a purpose.
2. Be comprehensive and meticulous, seek truth from facts, and record in a timely manner.
3. Have a plan and be patient.
4. Think positively and ask more whys.
What is a living thing?
What are the common characteristics of living things?
How to distinguish living things from non-living things?
Look at the picture and summarize what characteristics these creatures have in common?
1. Organisms need nutrients for their lives.
Question: 1) How do plants obtain nutrients?
2) How do animals obtain nutrients?
Plants absorb water, inorganic salts and carbon dioxide from the outside world, and through photosynthesis, produce the glucose, starch and other organic substances they need.
Animals cannot produce organic matter. They eat plants or other animals to obtain nutrients.
2. Organisms can breathe
How do living things breathe?
Most living things need to inhale oxygen and exhale carbon dioxide
3. Biological organisms can eliminate waste products produced in the body.
Animals and people remove waste from their bodies in a variety of ways. For example, people can eliminate waste products from the body through sweating, exhalation, and urination.
Summary: What are the basic characteristics of living things?
1. Organisms need nutrients for their lives.
2. Living things can breathe
3. Organisms can respond to external stimuli
4. Biological energy can eliminate waste produced in the body
5. Organisms can grow and reproduce
6. All living things have the characteristics of inheritance and mutation.
Based on your current knowledge and life experience, can you tell other characteristics of living things (other than those found in textbooks)?
Living things have lifespan
All living things are made of cells, except viruses
Living things can adapt to the environment and can also affect the environment
Take yourself as an example to discuss: Do people also have the biological characteristics described in the book?
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