name one organism list three characteristics that make this “thing” an organism. _________ is an...
TRANSCRIPT
NAME ONE ORGANISMList three
characteristics that make this “thing”
anorganism.
_________ is an organism.
__________ is an organismbecause1.___________________2.___________________3.___________________
Hint: An organism is any living thing.
Organism • Any living thing
• Examples:–Shark -Tree-Bacteria–Human -Bird
Characteristics of Organisms
1. Living things are organized
• Organisms are composed of (made of) cells
• Some organisms are composed of many cells and some are composed of one cell
• Multi-cellular and Uni-cellular
Examples ofUnicellular
organisms
Examples of multi-cellular organisms
Bacteria, Paramecium
Humans, trees, dogs
How are multi-cellular organisms organized?
Ex. Human
Ex. Digestive system
Ex. Liver
Ex. Liver tissue
Ex. Liver cells
2. Living Things Respond
Living things react to stimuli inside them or in their surrounding environment.
Stimuli or stimulus (singular)
Anything that causes a change in the organismEx. Car horn or a screaming baby
Stimuli can cause a response
A reaction to the stimuli is a response
Examples
Stimuli~Phone rings
Response ~Walk over to phone
~Touch hot water~Rapidly move your hand
3. Organisms use energy
Organism use energy for life activities.
The energy that is used by organisms comes directly or indirectly from the sun.
4. Organisms grow and develop
Growth is due to the increase in number of cells in any multi-cellular organism.
Growth is due to increase in size of the cell in any uni-cellular organism
5. Organisms can reproduce
Organisms have the ability to make more of their own kind.
Without reproduction, living things would not exist to replace those individuals that die, causing extinction.
Topic: LifeAim: How do organisms survive?
Review:the scientific
methodHandout
DO NOW:
Experiment
Groups
Experimental group
Controlgroup
Independent Variable Control
Dependent Variable: End Result / What you expect to happen
Something you measure Key works: amount
What each Group receives
Life Processes
aka“life functions”
aka“life activities” Biological
activities that must be performed by the organism to survive
Life process PRETEST
http://www.woodlands-junior.kent.sch.uk/revision/Science/life.html
1. Nutrition
Process in which organisms take in materials from the environment to be used by the body
2 types:
1. Heterotrophic nutrition
organism must obtain their food from their environment because they cannot make their own
Steps of Heterotrophic
nutrition
A. IngestionProcess of taking
in food
B. DigestionProcess of
breaking down food
C. AbsorptionProcess of
nutrients being diffused into
the bloodstream
D. EgestionProcess of
removing undigested food called
feces
2. Autotrophic nutrition organisms have the ability to make food from raw materials from their environment
By the process of photosynthesis
2. Respiration Release of ENERGY
found in nutrients needed to perform various activities
Glucose +
Energy
Oxygen
Carbon Dioxide
Water ++
TWO TYPES of respiration
A.Aerobic Respiration
Requires oxygenB. Anaerobic Respiration
Does NOT require oxygen
3.Transport
Circulation, distribution, and absorption of materials throughout the organism or through a cell
Carried out by the Circulatory system
Carried out by your cells
Other living things have circulatory systems like we
do…
The chloroplasts in plants cells must be able to move around inside the cell =
TRANSPORT
Topic: LifeAim: How are life functions linked to homeostasis?
DO NOW:
Explain how a life function helps an organisms survive.
___________ helps an organism to survive because _____________________________________________________.
4.Locomotion
Movement of the entire body from one place to another or movement of body parts
Animals move their whole bodies to get from one place to another
Plants turn towards the light and their roots grow down into
the soil
5. Excretion
Removal of metabolic/cellular wastes
Cellular wastes: wastes made by your cells
CO2, water, salt, nitrogen wastes called urea
Sweat = water, salt, urea (nitrogen waste)
6. Growth When there is an increase in cell number
Cancer
when the cells divide uncontrollably
Topic: LifeAim: How are life functions linked to homeostasis? PART II
DO NOW:
List 3 life functions and describe how they help the organisms.
7.Reproduction
Production of new individuals
As an individual, a living thing doesn’t have to reproduce BUT as a species it must in order to keep it’s kind alive
Two types1. Asexual reproduction requires one parent cell to divided (reproduce)
2. Sexual reproduction requires 2 parent cells to combine genetic material to form a new organism
8. Synthesis
When small molecules come together to form large molecules
9. Regulation
Control & Coordination of all life processes in order to maintain homeostasis
Metabolism Rate/pace at which the organism performs the life processes in the body
Every single thing carries out metabolic activities
Maintaining a stable, internal environment
The body's ability to regulate its internal environment to maintain stability in response to changes in the outside environment.
Medial Summary
Life process POSTTEST
http://www.woodlands-junior.kent.sch.uk/revision/Science/life.html