AP Biology 2005-2006 The Point is to Make ATP! ATP Making energy!
11/17 1. current science 2. energy refresher, application to biology & ATP 3. energy worksheet apply...
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Transcript of 11/17 1. current science 2. energy refresher, application to biology & ATP 3. energy worksheet apply...
11/17
• 1. current science• 2. energy refresher, application to biology & ATP• 3. energy worksheet apply your new knowledge!• RAFT on ATP• HW: finish RAFT, exit slip next class
IN BIOLOGY
ENERGY
1ST LAW
•Energy is never created or destroyed
•Energy DOES change form
FORMS OF ENERGY
KINETIC - movement POTENTIAL-Stored
EXAMPLE OF 1ST LAW AND CHEMICAL ENERGY
SUN DOESN’T CREATE ENERGY
Nuclear Potential Energy (Hydrogen atoms)
Light energy
Fun trivia knowledge! •600 million tons of hydrogen are converted to helium EVERY SECOND•The sun will continue to get brighter, so in about 3.5 billion years it will be too hot to have liquid water. •In about 6 billion years the sun will run out of hydrogen and expand into a red giant, consuming Mercury and Venus and possibly Earth (it won’t go supernova and create a black hole at least)
SUN PROVIDES ENERGY FOR LIFE
ENERGY TRANSFER MOLECULE OF LIFE
ATP IS MADE FROM ADP AND P
ATP RELEASES ENERGY
AdenosineDiPhosphateAdenosineTriPhosphate
From an energy source like food
To do work
To flex muscle, start reaction or do anything really
ATP HYDROLYSIS
ATP
ADP
Pi
EXAMPLES OF ATP USE
ENERGY COUPLING
•Exothermic reactions (like the splitting of ATP) provide energy for endothermic reactions
Requires 3.4kCal
Releases 7.3kCal
EVERYTHING YOU DO REQUIRES ATP
• Each cell contains about 1 billion ATP molecules
• Which means about 10^23 molecules in the body
• The average ATP is used and reformed about 3 times per minute
2 MAJOR ENERGY REACTIONS WE WILL STUDY
PHOTOSYNTHESIS
• Sunlight Sugar• Light energy
Chemical energy
CELLULAR RESPIRATION
• Food ATP• Chemical energy
Chemical energy
WORK THROUGH SHEET TOGETHER
•Check with your teacher periodically•When finished begin work on your RAFT (HW)
RAFT
• Role: ATP• Audience: ADP• Format: Entirely up to you (letter, poem, song, tweets, facebook posts, social media I don’t even know about etc.)• Topic: Explain the role of ATP in conservation of energy of living things
•May work with 1 partner ONLY if there is a performance (e.g. singing or acting out)