The Chemistry of Life What are living creatures
- Slides: 17
The Chemistry of Life What are living creatures made of? Why do we have to eat? Regents Biology 2006 -2007
Elements of Life § 96% of living organisms is made of: n n carbon (C) oxygen (O) hydrogen (H) nitrogen (N) Regents Biology
Molecules of Life § Put C, H, O, N together in different § ways to build living organisms What are bodies made of? u carbohydrates § sugars & starches proteins u fats (lipids) u nucleic acids u § DNA, RNA Regents Biology
Why do we eat? § We eat to take in more of these chemicals u Food for building materials § to make more of us (cells) § for growth § for repair u Food to make energy § calories § to make ATP Regents Biology ATP
What do we need to eat? § Foods to give you more building blocks & more energy § for building & running bodies carbohydrates u proteins u fats u nucleic acids u vitamins u minerals, salts u water u Regents Biology
Don’t forget water § Water 65% of your body is H 2 O u water is inorganic u § doesn’t contain carbon § Rest of you is made of carbon molecules u organic molecules § § Regents Biology carbohydrates proteins fats nucleic acids
How do we make these molecules? We build them! Regents Biology 2006 -2007
Building large molecules of life § Chain together smaller molecules u building block molecules = monomers § Big molecules built from little molecules u polymers Regents Biology
Building large organic molecules § Small molecules = building blocks § Bond them together = polymers Regents Biology
Building important polymers Carbohydrates = built from sugars sugar – sugar – sugar Proteins = built from amino acids amino amino acid – acid – acid Nucleic acids (DNA) = built from nucleotides nucleotide – nucleotide Regents Biology
How to build large molecules § Synthesis building bigger molecules from smaller molecules u building cells & bodies u § repair § growth § reproduction + ATP Regents Biology
How to take large molecules apart § Digestion taking big molecules apart u getting raw materials u § for synthesis & growth u making energy (ATP) § for synthesis, growth & everyday functions + ATP Regents Biology
Example of digestion ATP ATP starch ATP ATP glucose ATP § Starch is digested to glucose Regents Biology
Example of synthesis amino acids protein § Proteins are synthesized by bonding amino acids Regents Biology amino acids = building block protein = polymer
Any Questions? Penguins gone bad! Regents Biology
Old Food Pyramid Regents Biology
New Food Pyramid Regents Biology
- Mikael ferm
- Four living creatures covered with eyes
- Small living creatures tom 20
- Small living creatures tom 21
- Levels of organization atom
- Venn diagram of living and non living things
- Is a candle living or nonliving
- Living non living dead
- Smallest living unit
- Living by chemistry unit 2 smells answers
- Living by chemistry
- Living by chemistry solutions
- Living by chemistry solutions
- Lesson 81 drop in molecular views
- Living by chemistry
- Living by chemistry
- Unit 1 alchemy lesson 20 worksheet answers
- Functional groups ib chemistry