aim: how do we know the difference between living and nonliving things?
TRANSCRIPT
Aim: How do we know the difference between living and nonliving things?
What is the science of biology?What is the science of biology?
Biology is the study of life
CHARACTERISTICS OF CHARACTERISTICS OF LIFELIFE
CellsCells: Basic units of structure & function: Basic units of structure & function
Energy and MetabolismEnergy and Metabolism: Chemical : Chemical reactions in cellsreactions in cells
HomeostasisHomeostasis: Internal Balance: Internal Balance
ReproductionReproduction: Produce offspring: Produce offspring
CellsCells
Basic units of Basic units of structure & structure &
functionfunction
Living Things Are Made Up of One or More
Cells
ENERGY and METABOLISM
Energy is required to maintain life and for growth and development.
Metabolism includes all of the chemical reactions that occur in an organism.
HOMEOSTASIS Break down the word:
homeo - Constant or the same
stasis – balance
The ability of the body to maintain a relatively constant
internal condition, regardless of the external environment.
REPRODUCTIONREPRODUCTION
Reproduction: the ability of an organism to
produce a NEW organism.
What do all these images have in
common? How are they different?
Eight Life FunctionsEight Life Functions NutritionNutrition TransportTransport
Cell RespirationCell Respiration ExcretionExcretion Synthesis Synthesis RegulationRegulation
Growth Growth ReproductionReproduction
NUTRITIONNUTRITIONAll organisms get nutrients through their All organisms get nutrients through their
food!food!a. Autotrophic: refers to organisms that make a. Autotrophic: refers to organisms that make their own foodtheir own foodb. Heterotrophic: refers to organisms that get b. Heterotrophic: refers to organisms that get nutrients from the environmentnutrients from the environment
Heterotroph Autotroph
TransportTransport Organisms circulate and absorb Organisms circulate and absorb
materials through the cells (food and materials through the cells (food and waste)waste)
The circulatory system (blood) The circulatory system (blood) transports nutrients to the cellstransports nutrients to the cells
Cell RespirationCell RespirationChemical energy stored in nutrients is released during cellular respiration
Occurs in the Mitochondria
SYNTHESISSYNTHESIS To make or to build from small to large.To make or to build from small to large. Many sugars make a carbohydrateMany sugars make a carbohydrate
Many amino acids make a proteinMany amino acids make a protein
ExcretionExcretion Get rid of Get rid of Metabolic (cellular) wasteMetabolic (cellular) waste Ex: CO2, urine, sweatEx: CO2, urine, sweat
REGULATIONREGULATION To controlTo control Nervous System (brain) and Nervous System (brain) and
Endocrine System (hormones)Endocrine System (hormones)
GROWTHGROWTH Increasing the Increasing the sizesize or or numbernumber of cells of cells
Cells increase in size or cells split to
make new cells
REPRODUCTIONREPRODUCTION To have offspring (children)To have offspring (children) Asexual reproduction (one parent, cell splits)Asexual reproduction (one parent, cell splits)
Sexual reproduction (two parents, sperm and egg)Sexual reproduction (two parents, sperm and egg)
The Living Environment Name:_____________________The Living Environment Name:_____________________
Features of LifeFeatures of Life List 4 characteristics that scientist look for when they want to determine life:List 4 characteristics that scientist look for when they want to determine life:
1.1. ________________________________________________________
2.2. ________________________________________________________
3.3. ________________________________________________________
4.4. ________________________________________________________ Label the life characteristic that is represented in each diagram.Label the life characteristic that is represented in each diagram.
A mission to Mars has found a specimen and brought it back to Earth. As a biologist, your job is to A mission to Mars has found a specimen and brought it back to Earth. As a biologist, your job is to figure out if the following specimens is living or non living. Explain how you will determine whether figure out if the following specimens is living or non living. Explain how you will determine whether it is living or non living. (use complete sentences)it is living or non living. (use complete sentences)___________________________________________________________________________
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Under a microscope Under a microscope