1-3 Studying Life 1. What are some characteristics of ...

1-3 Studying Life

Key Concepts 1. What are some characteristics of living things? 2. How can life be studied at different levels?

Compare the two objects and note similarities and differences between them.

Collaborate your findings and develop a paragraph of what makes one object a living thing and the other object not.

Clock

Animal

This is what our year is going to cover...Living things in a variety of ways.

Biology study of living things

bio = living logy = study of

Characteristics living things share:

******KNOW ALL OF THESE******

1. Living things are made up of units called cells. Cell is the smallest unit of an organism that is considered alive.

2. Living things reproduce. Sexual Reproduction - cells from two different parents unite Asexual Reproduction - single parent produces offspring identical to itself

3. Living things are based on a universal genetic code. Genetic Code written in a molecule called DNA

4. Living things grow and develop. Have a pattern of growth, division of cells, undergo differentiation to perform different functions

5. Living things obtain and use materials and energy. All animals must take in food for energy. The animal breaks down or builds up material is called metabolism. Plants produce food through photosynthesis.

6. Living things respond to their environment. An organism responds to a stimulus.

7. Living things maintain a stable internal environment. The process of homeostasis maintains a constant internal conditions.

8. Living things change over time. Basic traits do not change, but over time organisms evolve or change

Look at figure 1-15 page 16-17 You do not need to copy this.

Look at the bear and the salamander. What characteristics of life do both of these organisms exhibit? all eight characteristics

How are these two living things similar, and how are they different? both animals, living traits

different - structure, size, habitat and many other ways

How does the salamander obtain the energy it needs to live? eats other organisms

Where do the redwoods and other plants obtain the energy they need to live? photosynthesis

All starts with the sun for both animals and plants.

What about growth in living and nonliving things??? growth of a child vs. growth heap

both grow but a child will develop and become "organized"

Do organisms always grow and develop at the same rate? no

When do organisms stop growing and developing? The process goes on at different rates but does not completely stop until death.

Branches of Biology 20 questions

gold fish

During this little game, you conducted an investigation just like scientists do.

You were presented with a problem and you needed to ask questions (the right questions) to reach the solution.

In most cases the answers were available, sometimes they were not. As a scientist, figuring out the questions to ask is the most difficult part in the investigation.

Different branches of biology ask different questions.

Look at Figure 1-19 page 21 Levels of Organization Molecules, cells, groups of cells (tissues, organs, and organ systems) organism, population, community, ecosystem, biosphere - circle of life

What should you know about section 1-3. Definition Characteristics of Life all terms associated with this Levels of Organization

Assignment Worksheet 1-3

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