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Clear off desk and get out something to write with
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Warm Up On index card, write 3 characteristics that defines life (there are 7 total)
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The Characteristics of Life
Biology - The study of Life... On Earth The Characteristics of Life
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Is it Living? You were given a list of living and non-living things.
Based on your rules, you and your partner will debate whether the items on the list are living or not and what was the reasoning behind your choice. What “rule” did you use to decide if it was alive or non-living? Is it Living? Listed below are examples of living (which includes once-living) and nonliving things. What things below are considered living? What “rule” or reasoning did you use to decide if something could be considered living? Explain your answer. (I bolded the NON LIVING ones) The Virus Debate The students in Miss Yard’s biology class were having a debate about viruses. Half of the class thought viruses were considered living things. The other half of the class did not think viruses were considered living things. Which side are you on? Explain your thinking.
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Seed Egg Bacteria Cell Molecules Fossil Hibernating bear Mitochondria
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So what are the characteristics of life?
According to Merriam – Webster: having life : not dead According to “The Free Dictionary” – in existence or operation
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Cellular Organization
All living things are composed of cells (the smallest unit capable of carrying out life functions) Unicellular organisms are composed of one cell Multicellular organisms are composed of more than one cell
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Reproduction The ability to produce new organisms – creation of the next generation Asexual reproduction – a single organism is used in the creation of a new generation (Example:________) Sexual reproduction – formation of a new organism by the union of two different gametes (Example: ______)
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Use & Require Energy – Metabolize
All chemical reactions that an organism carries out – the supply and use of energy (eating, breathing) Autotrophs – organisms that produce their own energy supply, usually through photosynthesis Heterotrophs – organisms that must gain energy from an outside source
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Growth & Develop Cell division – new cells form . An organism gets bigger as the number of cells increases
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Homeostasis = Balance Can maintain a stable internal environment for survival… balance!! Breathing, blood pressure, sweating, phototropism, sugar balance
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Environmental Response
Reaction to a stimulus May be an internal or external response
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Adapt & Change (Evolve)
Changes in an organism’s or group of organism’s characteristics over time Example antibiotic resistant bacteria
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The Virus Debate The students in Coach K’s biology class were having a debate about viruses. Half of the class thought viruses were living, the other half of the class did not. Which side are you on? Explain your thinking.
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Complete the acrostic with the word “Dog Face” to help you remember the 7 Characteristics of Life
row and develop
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Investigate the Properties of water
Each station has an activity that will assist in investigating a particular property. You will have 10 min at each station to explore. Once the timer goes off we will rotate clockwise around the room.
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Polarity www.h2ouniversity.org
Water is a "polar" molecule, meaning that there is an uneven distribution of electron density. Water has a partial negative charge ( ) near the oxygen atom due the unshared pairs of electrons, and partial positive charges ( ) near the hydrogen atoms. Remember that this is because of the negatively charged surface of the balloon interacting with the partially positive charges of the water. Lightning begins as static charges in a rain cloud. Winds inside the cloud are very turbulent. Water droplets in the bottom part of the cloud are caught in the updrafts and lifted to great heights where the much colder atmosphere freezes them. Meanwhile, the downdrafts in the cloud push ice and hail down from the top of the cloud. Where the ice going down meets the water coming up, electrons are stipped off.
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Density of Water Phases
Ice would freeze from the bottom up push marine life to the surface and causing. Ice burgs would fall to the bottom of the sea. The radiation from the sun would not be reflected back. Causing a increase in the Earth’s temperature.
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Hydrophobic interactions are important
Find the video of the small lizard/ gecko thing BBC life Episode 02
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Cohesion of Water Molecules
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Adhesion Meniscus Capillary action
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Solvation
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Moderation of Temperature by Water
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