1. Energy for Life
Unit 4 – Lesson 3

2. NO! Nutrition How to plant cells get their energy to grow?
How do animal cells get their energy to move?
WE GET IT ALL FROM OUR FOOD!
But, does everything eat?
NO!

3. Nutrition
Producers – organisms that have cells which make their own food.
Consumers – organisms with cells that can’t make their own food.

4. Photosynthesis We see that plants can MAKE their food…but how?
Go back to cells…remember chloroplasts?

5. Photosynthesis sunlight + water + carbon dioxide
Photosynthesis is when the chloroplasts take:
sunlight + water + carbon dioxide
and make…
oxygen and sugar (glucose) (oh hey, that’s food!)

6. Animals consume the sugars plants make – or they consume other animals that rely on plants. Animals could not exist without plants or photosynthesis!

7. Nutrition
Once the plant makes its food by photosynthesis – it can break it down into energy! This makes the plant grow!
Once the animal eats, it digests the food and breaks it down into energy! This makes the animal grow!

8. Nutrition
The food that plants and animals make/eat is VERY complex, so it needs to be broken down into simple units by enzymes.

9. Enzyme

32. Mighty Mighty Mitochondria
Respiration
Once the food is broken down, what happens next? It gets turned into ENERGY!
Go back to cells…Remember the mitochondria?
Mighty Mighty Mitochondria
Hey Guys! Remember Me!?

33. water + carbon dioxide + ATP
Respiration
Respiration occurs in the mitochondria of a cell. It takes:
glucose + oxygen
and turns it into…
water + carbon dioxide + ATP
Energy = ATP

34. Respiration and Photosynthesis
Respiration and Photosynthesis use the same stuff. However their processes are opposite each other.
They both use
Water
Carbon Dioxide
Glucose
Oxygen
Energy
H2O
CO2 O2
C6H12O6
ENERGY

35. Photosynthesis
Starts
With
Chloroplast
Carbon
Dioxide
Sunlight
Water

36. Photosynthesis
Chloroplast

37. Photosynthesis
Chloroplast

38. Photosynthesis
Chloroplast

39. Photosynthesis
Chloroplast 39

40. Photosynthesis
Chloroplast

41. Photosynthesis
Chloroplast

42. Photosynthesis
Chloroplast

43. Photosynthesis
Chloroplast

44. Photosynthesis
Chloroplast

45. Photosynthesis
Chloroplast

46. Photosynthesis
Chloroplast

47. Photosynthesis
Chloroplast

48. Photosynthesis
Chloroplast

49. Photosynthesis
Chloroplast

50. Photosynthesis
Chloroplast

51. Photosynthesis
Chloroplast

52. Photosynthesis
Chloroplast

53. Photosynthesis
Chloroplast

54. Photosynthesis
Ends
With
Chloroplast
Simple
Sugar
Oxygen

55. Respiration
Starts
With
Mitochondria
Simple
Sugar
Oxygen

56. Respiration
Mitochondria

57. Respiration
Mitochondria

58. Respiration
Mitochondria

59. Respiration
Mitochondria

60. Respiration
Mitochondria

61. Respiration
Mitochondria

62. Respiration
Mitochondria

63. Respiration
Mitochondria

64. Respiration
Mitochondria

65. Respiration
Mitochondria

66. Respiration
Mitochondria

67. Respiration
Mitochondria

68. Respiration
Mitochondria

69. Respiration
Mitochondria

70. Respiration
Mitochondria

71. Respiration
Mitochondria

72. Respiration
Mitochondria

73. Respiration
Ends
With
Mitochondria
A T P
Carbon
Dioxide
Water

74. Photosynthesis and Respiration
The two processes are almost opposites of each other.
Photosynthesis produce sugars (glucose) and oxygen, which are used in respiration.
Respiration produces carbon dioxide and water, which are used in photosynthesis.

75. Photosynthesis and Respiration
CO2 + H2O + SUNLIGHT  C6H12O6 + O2
CO HO GO!
GO CO HO!
Respiration
C6H12O6 + O2  CO2 + H2O + ATP