What makes something alive ?

What are living things? There are certain criteria that determine if something is living. Yes, ALL 7 criteria must be met. Do ALL 7 criteria have to be met?

Organism Anything that possesses all of the following characteristics of life. Living things R-CHARGEED !!

R - All living things produce offspring. Making copies of individuals by genetic transfer, sexually or asexually. eproduce

-Living organisms show an orderly structure (made up of cells) Examples: Leaf Cross-section of worm Centipede C - ells

Example: The ability to maintain internal conditions separate from an outside environment. The human body maintains an average temperature of 98.6 ºF. H - omeostasis

A living organism will respond to an environmental condition called a stimulus. An adaptation is any characteristic of an organism that improves its chances of surviving in its environment A plant growing in a specific direction due to a light stimulus. A - dapt to the environment R - espond to stimuli

Getting Bigger / Increasing material All of the changes that take place during the life of an organism. Maturing. Amoeba absorbing nutrients Growth rings in a tree G - rowth D - evelopment

Metabolism. Chemical and energy transformations. All organisms need energy for all life activities. Even thinking requires a considerable amount of energy. Transforming glucose into ATP for energy (to do work). E - energy

The gradual accumulation of adaptations due to environmental stimuli. (Organisms with more suitable adaptations are more likely to survive and reproduce) Example: Owls, and other nocturnal animals have evolved large eyes for better night vision. E - evolve

Allright let’s see how well you paid attention Review the lab findings

Classify the crayfish 1. Alive 2. Dead but once alive 3. Never alive 4. Product of a living thing

How did you know???

Classify the fish 1. Alive 2. Dead but once alive 3. Never alive 4. Product of a living thing

How did you know???

Classify the conch shell 1. Alive 2. Dead but once alive 3. Never alive 4. Product of a living thing

Classify the fetal pig 1. Alive 2. Dead but once alive 3. Never alive 4. Product of a living thing

How did you know???

Classify Herb 1. Alive 2. Dead but once alive 3. Never alive 4. Product of a living thing

How did you know???

Classify Yogurt 1. Alive 2. Dead but once alive 3. Never alive 4. Product of a living thing

Classify the beans 1. Alive 2. Dead but once alive 3. Never alive 4. Product of a living thing

Classify the wood block 1. Alive 2. Dead but once alive 3. Never alive 4. Product of a living thing

Classify the rock 1. Alive 2. Dead but once alive 3. Never alive 4. Product of a living thing

Classify the burning candle 1. Alive 2. Dead but once alive 3. Never alive 4. Product of a living thing

How did you know???

Classify the egg 1. Alive 2. Dead but once alive 3. Never alive 4. Product of a living thing

Classify the cotton 1. Alive 2. Dead but once alive 3. Never alive 4. Product of a living thing

How many characteristics of life must an organism possess to be considered alive? and a half 5. All of them

All of the following are characteristics of life except… 1. Organized 2. Grow and Develop 3. Adapt 4. Maintain internal conditions 5. Move 6. Reproduce

Which of the following characteristics of life are not required for an organism to survive but instead to ensure survival of an entire species? 1. Organized 2. Grow and Develop 3. Adapt 4. Maintain internal conditions 5. Move 6. Reproduce

How are living things organized? There are various levels of organization: and get bigger. Let’s start small

1) Atoms Atoms are the smallest unit of matter that have the chemical properties of a particular element. Examples: Carbon, Hydrogen, Oxygen…

2) Molecules Molecules that are the small building blocks from which larger molecules are made. Examples: Glucose Amino Acid Water

3) Macromolecules Large molecules consisting of many subunits. Examples: Protein Cellulose

4) Organelles Examples: Specialized structures inside of a cell. Mitochondria Cell Membrane

5) Cells Example: The smallest unit of biological organization that biologists consider alive.

6) Tissue A group of distinct and similar cells that carry out a specific set of functions. Examples: Muscle Skin

7) Organ Examples: Groups of tissues organized together to carry out a particular set of functions. Brain Stomach

8) Organ System Example: Groups of organs that function together to carry out broad sets of functions.

9) Organism (or individual) Examples: Individual that has its own distinct existence as a complex, reproducing unit.

10) Population Examples: Group of freely interacting and breeding individuals of the same species. School of fish Herd of Zebra

11) Community Example: Populations of different species living and interacting together in a distinct area. Marine community

12) Ecosystem Examples: Distinguishable groups of species and the abiotic (non-living) components of the environment with which the living creatures interact.

13.) Biome Geographically defined area based on climate and environmental conditions.

14.) Biosphere I’m sure you can figure this one out!