8-1 energy & life (source and uses of cell energy) · 8-1: energy & life •energy in atp...
TRANSCRIPT
![Page 1: 8-1 Energy & Life (Source and Uses of Cell Energy) · 8-1: Energy & Life •Energy in ATP is released when it is converted to ADP (Fig. 9-2). •The characteristics of ATP make it](https://reader035.vdocuments.net/reader035/viewer/2022081612/5f6907beef76765b7e1902b1/html5/thumbnails/1.jpg)
NOTES: 8.1 – Energy & Life
• 8-1 Energy & Life
(Source and Uses of Cell Energy)
![Page 2: 8-1 Energy & Life (Source and Uses of Cell Energy) · 8-1: Energy & Life •Energy in ATP is released when it is converted to ADP (Fig. 9-2). •The characteristics of ATP make it](https://reader035.vdocuments.net/reader035/viewer/2022081612/5f6907beef76765b7e1902b1/html5/thumbnails/2.jpg)
8-1: Energy & Life
• Key Concepts:
– What is ATP?
– How does ATP provide energy for the cell?
– What is the role of ATP in cellular activities?– What is the role of ATP in cellular activities?
• Vocabulary:
– Adenosine triphosphate (ATP)
– Adenosine di- and monophosphate (ADP, AMP)
![Page 3: 8-1 Energy & Life (Source and Uses of Cell Energy) · 8-1: Energy & Life •Energy in ATP is released when it is converted to ADP (Fig. 9-2). •The characteristics of ATP make it](https://reader035.vdocuments.net/reader035/viewer/2022081612/5f6907beef76765b7e1902b1/html5/thumbnails/3.jpg)
Cell Energy:
**Energy is essential to life!!
► all living things must be able to:
-produce energy;
-store energy for -store energy for
future use;
-use energy in a
controlled way.
![Page 4: 8-1 Energy & Life (Source and Uses of Cell Energy) · 8-1: Energy & Life •Energy in ATP is released when it is converted to ADP (Fig. 9-2). •The characteristics of ATP make it](https://reader035.vdocuments.net/reader035/viewer/2022081612/5f6907beef76765b7e1902b1/html5/thumbnails/4.jpg)
Which cellular activities require energy…???
• Active transport
• Cell division
• Movement of flagella or cilia• Movement of flagella or cilia
• Production of proteins
• Storage of proteins
![Page 5: 8-1 Energy & Life (Source and Uses of Cell Energy) · 8-1: Energy & Life •Energy in ATP is released when it is converted to ADP (Fig. 9-2). •The characteristics of ATP make it](https://reader035.vdocuments.net/reader035/viewer/2022081612/5f6907beef76765b7e1902b1/html5/thumbnails/5.jpg)
8-1: Energy & Life
• Chemical Energy and ATP
– Energy can exist or be stored in many forms:
• Light
• Heat• Heat
• Electricity
• Chemical Compounds (CHEMICAL BONDS!)
![Page 6: 8-1 Energy & Life (Source and Uses of Cell Energy) · 8-1: Energy & Life •Energy in ATP is released when it is converted to ADP (Fig. 9-2). •The characteristics of ATP make it](https://reader035.vdocuments.net/reader035/viewer/2022081612/5f6907beef76765b7e1902b1/html5/thumbnails/6.jpg)
8-1: Energy & Life
• ATP
–Adenosine TriPhosphate
• Adenine (N)
• 5-Carbon Sugar (Ribose)• 5-Carbon Sugar (Ribose)
• 3-phosphate groups
![Page 7: 8-1 Energy & Life (Source and Uses of Cell Energy) · 8-1: Energy & Life •Energy in ATP is released when it is converted to ADP (Fig. 9-2). •The characteristics of ATP make it](https://reader035.vdocuments.net/reader035/viewer/2022081612/5f6907beef76765b7e1902b1/html5/thumbnails/7.jpg)
![Page 8: 8-1 Energy & Life (Source and Uses of Cell Energy) · 8-1: Energy & Life •Energy in ATP is released when it is converted to ADP (Fig. 9-2). •The characteristics of ATP make it](https://reader035.vdocuments.net/reader035/viewer/2022081612/5f6907beef76765b7e1902b1/html5/thumbnails/8.jpg)
Phosphate groups…
• Phosphate groups are negatively charged molecules…
• Molecules with the same charge repel each other (they do not like being too each other (they do not like being too close to each other)
• This means that the 3 phosphate groups on ATP are in a very unstablearrangement!
![Page 9: 8-1 Energy & Life (Source and Uses of Cell Energy) · 8-1: Energy & Life •Energy in ATP is released when it is converted to ADP (Fig. 9-2). •The characteristics of ATP make it](https://reader035.vdocuments.net/reader035/viewer/2022081612/5f6907beef76765b7e1902b1/html5/thumbnails/9.jpg)
![Page 10: 8-1 Energy & Life (Source and Uses of Cell Energy) · 8-1: Energy & Life •Energy in ATP is released when it is converted to ADP (Fig. 9-2). •The characteristics of ATP make it](https://reader035.vdocuments.net/reader035/viewer/2022081612/5f6907beef76765b7e1902b1/html5/thumbnails/10.jpg)
![Page 11: 8-1 Energy & Life (Source and Uses of Cell Energy) · 8-1: Energy & Life •Energy in ATP is released when it is converted to ADP (Fig. 9-2). •The characteristics of ATP make it](https://reader035.vdocuments.net/reader035/viewer/2022081612/5f6907beef76765b7e1902b1/html5/thumbnails/11.jpg)
ATP and Energy:
• This unstable arrangement of the 3 phosphate groups is like a compressedspring…stored potential energy!
• The third phosphate group is so eager to • The third phosphate group is so eager to get away from the other two that, when the bond is broken, energy is released…
• What is left over is a free phosphate group and a lower energy molecule: ADENOSINE DIPHOSPHATE (ADP)
![Page 12: 8-1 Energy & Life (Source and Uses of Cell Energy) · 8-1: Energy & Life •Energy in ATP is released when it is converted to ADP (Fig. 9-2). •The characteristics of ATP make it](https://reader035.vdocuments.net/reader035/viewer/2022081612/5f6907beef76765b7e1902b1/html5/thumbnails/12.jpg)
![Page 13: 8-1 Energy & Life (Source and Uses of Cell Energy) · 8-1: Energy & Life •Energy in ATP is released when it is converted to ADP (Fig. 9-2). •The characteristics of ATP make it](https://reader035.vdocuments.net/reader035/viewer/2022081612/5f6907beef76765b7e1902b1/html5/thumbnails/13.jpg)
![Page 14: 8-1 Energy & Life (Source and Uses of Cell Energy) · 8-1: Energy & Life •Energy in ATP is released when it is converted to ADP (Fig. 9-2). •The characteristics of ATP make it](https://reader035.vdocuments.net/reader035/viewer/2022081612/5f6907beef76765b7e1902b1/html5/thumbnails/14.jpg)
8-1: Energy & Life• ATP
– Adenosine TriPhosphate
• Adenine (N)
• 5-Carbon Sugar (Ribose)
• 3-phosphate groups• 3-phosphate groups
• ADP
– Adenosine DiPhosphate
• Adenine (N)
• 5-Carbon Sugar (Ribose)
• 2-phosphate groups
![Page 15: 8-1 Energy & Life (Source and Uses of Cell Energy) · 8-1: Energy & Life •Energy in ATP is released when it is converted to ADP (Fig. 9-2). •The characteristics of ATP make it](https://reader035.vdocuments.net/reader035/viewer/2022081612/5f6907beef76765b7e1902b1/html5/thumbnails/15.jpg)
8-1: Energy & Life
• Energy in ATP is released when it is converted to ADP (Fig. 9-2).
• The characteristics of ATP make it an exceptionally useful molecule that is used exceptionally useful molecule that is used by all types of cells as their basic energy source.
![Page 16: 8-1 Energy & Life (Source and Uses of Cell Energy) · 8-1: Energy & Life •Energy in ATP is released when it is converted to ADP (Fig. 9-2). •The characteristics of ATP make it](https://reader035.vdocuments.net/reader035/viewer/2022081612/5f6907beef76765b7e1902b1/html5/thumbnails/16.jpg)
![Page 17: 8-1 Energy & Life (Source and Uses of Cell Energy) · 8-1: Energy & Life •Energy in ATP is released when it is converted to ADP (Fig. 9-2). •The characteristics of ATP make it](https://reader035.vdocuments.net/reader035/viewer/2022081612/5f6907beef76765b7e1902b1/html5/thumbnails/17.jpg)
ATP / ADP Cycle:
• When ATP is broken down, energy is RELEASED and ADP is formed.
• When ADP binds with another phosphate, • When ADP binds with another phosphate, energy is STORED and ATP is formed.
![Page 18: 8-1 Energy & Life (Source and Uses of Cell Energy) · 8-1: Energy & Life •Energy in ATP is released when it is converted to ADP (Fig. 9-2). •The characteristics of ATP make it](https://reader035.vdocuments.net/reader035/viewer/2022081612/5f6907beef76765b7e1902b1/html5/thumbnails/18.jpg)
ATP / ADP Cycle:
![Page 19: 8-1 Energy & Life (Source and Uses of Cell Energy) · 8-1: Energy & Life •Energy in ATP is released when it is converted to ADP (Fig. 9-2). •The characteristics of ATP make it](https://reader035.vdocuments.net/reader035/viewer/2022081612/5f6907beef76765b7e1902b1/html5/thumbnails/19.jpg)
ATP / ADP Cycle:
![Page 20: 8-1 Energy & Life (Source and Uses of Cell Energy) · 8-1: Energy & Life •Energy in ATP is released when it is converted to ADP (Fig. 9-2). •The characteristics of ATP make it](https://reader035.vdocuments.net/reader035/viewer/2022081612/5f6907beef76765b7e1902b1/html5/thumbnails/20.jpg)
8-1: Energy & Life
• ATP:
– Efficient in transferring energy
– Not very good for storing large amounts of energy long term.energy long term.
– A single molecule of sugar stores more than 90 times a molecule of ATP.
![Page 21: 8-1 Energy & Life (Source and Uses of Cell Energy) · 8-1: Energy & Life •Energy in ATP is released when it is converted to ADP (Fig. 9-2). •The characteristics of ATP make it](https://reader035.vdocuments.net/reader035/viewer/2022081612/5f6907beef76765b7e1902b1/html5/thumbnails/21.jpg)
How do cells use the energy stored in ATP?
• Cellular proteins have a
specific site where ATP
can bind…
• When the ATP breaks down, • When the ATP breaks down,
the energy is transferred to
the protein, enabling the protein
to DO WORK
(e.g. active transport, move, change shape)
![Page 22: 8-1 Energy & Life (Source and Uses of Cell Energy) · 8-1: Energy & Life •Energy in ATP is released when it is converted to ADP (Fig. 9-2). •The characteristics of ATP make it](https://reader035.vdocuments.net/reader035/viewer/2022081612/5f6907beef76765b7e1902b1/html5/thumbnails/22.jpg)
Battery analogy:
• Sitting on a table, batteries are not of much use…
• Put the batteries into a device (calculator, cell phone, etc.) and the stored energy in the battery is put to use!the battery is put to use!
• When the battery is “dead” it can be removed and recharged…
![Page 23: 8-1 Energy & Life (Source and Uses of Cell Energy) · 8-1: Energy & Life •Energy in ATP is released when it is converted to ADP (Fig. 9-2). •The characteristics of ATP make it](https://reader035.vdocuments.net/reader035/viewer/2022081612/5f6907beef76765b7e1902b1/html5/thumbnails/23.jpg)
![Page 24: 8-1 Energy & Life (Source and Uses of Cell Energy) · 8-1: Energy & Life •Energy in ATP is released when it is converted to ADP (Fig. 9-2). •The characteristics of ATP make it](https://reader035.vdocuments.net/reader035/viewer/2022081612/5f6907beef76765b7e1902b1/html5/thumbnails/24.jpg)
Battery analogy:
• The energy stored in ATP is available when ATP is bound to a protein that will use it;
• Once the ATP is “dead” (is not ADP), it is • Once the ATP is “dead” (is not ADP), it is released to be “recharged” back into ATP.
![Page 25: 8-1 Energy & Life (Source and Uses of Cell Energy) · 8-1: Energy & Life •Energy in ATP is released when it is converted to ADP (Fig. 9-2). •The characteristics of ATP make it](https://reader035.vdocuments.net/reader035/viewer/2022081612/5f6907beef76765b7e1902b1/html5/thumbnails/25.jpg)
![Page 26: 8-1 Energy & Life (Source and Uses of Cell Energy) · 8-1: Energy & Life •Energy in ATP is released when it is converted to ADP (Fig. 9-2). •The characteristics of ATP make it](https://reader035.vdocuments.net/reader035/viewer/2022081612/5f6907beef76765b7e1902b1/html5/thumbnails/26.jpg)
Heterotrophs & Autotrophs
• Cells are not “born” with a supply of ATP…they must somehow produce it!
• Where do living organisms • Where do living organisms get the energy they use to produce ATP???
• the answer: FOOD!! (well, molecules from food)
![Page 27: 8-1 Energy & Life (Source and Uses of Cell Energy) · 8-1: Energy & Life •Energy in ATP is released when it is converted to ADP (Fig. 9-2). •The characteristics of ATP make it](https://reader035.vdocuments.net/reader035/viewer/2022081612/5f6907beef76765b7e1902b1/html5/thumbnails/27.jpg)
Heterotrophs & Autotrophs• HETEROTROPHS: organisms
that obtain food by consuming
other living things
• Examples:
-zebra: eats plants (herbivore)
-cheetah: eats animals like
zebras! (carnivore)
-mushroom: absorbs nutrients
from decomposing / dead
organisms (detritovore)
![Page 28: 8-1 Energy & Life (Source and Uses of Cell Energy) · 8-1: Energy & Life •Energy in ATP is released when it is converted to ADP (Fig. 9-2). •The characteristics of ATP make it](https://reader035.vdocuments.net/reader035/viewer/2022081612/5f6907beef76765b7e1902b1/html5/thumbnails/28.jpg)
Heterotrophs & Autotrophs• AUTOTROPHS: organisms that make their
own food
• Examples:
-algae -pine tree
-grass -oak tree
***green plants make their own food through the process of PHOTOSYNTHESIS!
![Page 29: 8-1 Energy & Life (Source and Uses of Cell Energy) · 8-1: Energy & Life •Energy in ATP is released when it is converted to ADP (Fig. 9-2). •The characteristics of ATP make it](https://reader035.vdocuments.net/reader035/viewer/2022081612/5f6907beef76765b7e1902b1/html5/thumbnails/29.jpg)
PHOTOSYNTHESIS…next class!