Do Now On a separate piece of paper

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Do Now…. On a separate piece of paper please answer the following question. List

Do Now…. On a separate piece of paper please answer the following question. List the eight characteristics of life?

What does Biology mean? q In Greek, Bios = “life” and -logy = “study

What does Biology mean? q In Greek, Bios = “life” and -logy = “study of” q Biology is the study of life q What defines life or living…let’s find out

Objective: Students will be able to recognize and describe the eight characteristics of living

Objective: Students will be able to recognize and describe the eight characteristics of living organisms. Time for a video clip… (vimeo. com)

The Characteristics of Life All living things…. …no matter how different from each other

The Characteristics of Life All living things…. …no matter how different from each other they may be…. …. share a set of common characteristics.

All living things share common characteristics (8 life functions) 1. Have cells 2. Reproduce

All living things share common characteristics (8 life functions) 1. Have cells 2. Reproduce 3. Have a genetic code (DNA) 4. Grow and Develop 5. Obtain and use materials and energy 6. Respond to their environment 7. Internal balance 8. Evolve

1. Living things are made up of one or more cells. The cell is

1. Living things are made up of one or more cells. The cell is the smallest unit of life, there are two types of cellular organisms – unicellular and multicellular Unicellular - entire organism is made up of one cell Multicellular – the organism is made up of many cells - bacteria, protists, algae Cells have specialized functions within the organism

2. Living things reproduce Reproduction the process were living things produce new living things

2. Living things reproduce Reproduction the process were living things produce new living things either by sexual or asexual reproduction Sexual reproduction involves two parents and the offspring is a combination of both parents. Examples: opossums, flowering plants, humans. Asexual reproduction involves one parent and the offspring are identical to the parent. Example: a sea star can generate an entire animal from an arm. A bacteria can divide into two.

3. Living things are based on a genetic code Living things store complex information

3. Living things are based on a genetic code Living things store complex information they need to live, function, and reproduce in their DNA The genetic code is the set of rules by which information encoded in genetic material (DNA or RNA sequences) is translated into proteins (amino acid sequences) by living cells. It is the sequence that makes us different from other living things, such as fish or plants.

4. Living things grow and develop All living things grow and increase in size

4. Living things grow and develop All living things grow and increase in size through cell division and/or cell enlargement. All living things age and mature.

Check point…lets see what you remember. Which characteristics of life is represented by the

Check point…lets see what you remember. Which characteristics of life is represented by the statement? Q: An amoeba divides in half to form two individuals A: All living things reproduce Q: A grandmother, her daughter and granddaughter all had sons with hemophilia (genetic blood disorder) A: Living things have a genetic code (DNA) Q: An egg turns into a larva, which turns into a pupa, which turns into an adult. A: Living things grow and develop Q: Cells containing the same active genes arrange themselves to work together to form muscle tissue A: Made up of cells

5. Living things obtain and use materials and energy Capable of metabolism – go

5. Living things obtain and use materials and energy Capable of metabolism – go through a series of chemical reactions to build or break down materials. Autotrophs, like plants use photosynthesis to produce their own food for energy to grow. Heterotrophs, cannot make their own food, instead rely on others for food to eat. Like the lion eating an animal.

6. Living things respond to their environment Organisms detect and respond to stimuli from

6. Living things respond to their environment Organisms detect and respond to stimuli from their environment § § § Light Sound Temperature Water Odor A stimulus influences an activity

7. Living things maintain a stable internal environment (Homeostasis) All living things have regulatory

7. Living things maintain a stable internal environment (Homeostasis) All living things have regulatory mechanisms that allow them to maintain stable internal conditions (i. e. , water balance, temp. ) even though environmental conditions are constantly changing

8. Taken as a group, living things change over time (evolve) Basic genetic characteristics

8. Taken as a group, living things change over time (evolve) Basic genetic characteristics of an individual organism do not change over time; However, populations of organizations do adapt or evolve through time to improve their chances of survival.

Check point # 2… Q: A grasshopper eats a plant, a bird eats the

Check point # 2… Q: A grasshopper eats a plant, a bird eats the grasshopper, and a cat eats the bird A: Obtain and use materials and energy Q: Over time the dark colored peppered moth became prominent over the light colored peppered moths, because they blended in with the dark soot covered trees better. A: Living things change over time, they evolve Q: A humans body temperature is maintained at 98. 6 F A: Maintain an internal environment (homeostasis) Q: A deer hears a sound and runs A: Respond to their environment (stimuli)

Homework Essay (please refer to handout) Complete the Characteristics of Living Things worksheet

Homework Essay (please refer to handout) Complete the Characteristics of Living Things worksheet