1. TVMS 2016-17 7th Grade Timm - Ripple
Cells Review Preview

2. Overview Kahoot Slide / lecture / guided notes Activity (web quest?)
Find a video / more guided notes
Kahn Academy (a few examples)
Macromolecules
Energy and enzymes
Structure of a cell
Membranes and transport
Cellular respiration
Photosynthesis
Cell signaling
Cell division
Cell drawing / labeling
Follow up assessment

3. Topics Characteristics of living things Level of life Cell theory
(6)
Life from life (Redi’s experiment)
Level of life
Cell theory
Common structures and functions
Plant vs animal
Respiration / photosynthesis
Hierarchy (cells, tissues, organs, systems, body)

4. Six characteristics of all living things are:
Cellular organization
Contain similar chemicals
Use energy
Grow and develop
Respond to their surroundings
Reproduce

5. Produce offspring that are similar to the parents.
Reproduction
Produce offspring that are similar to the parents.

6. Life Comes From Life
Spontaneous Generation-mistaken theory that living things arise from nonliving things.

8. Experiments to disprove spontaneous generation.
Francesco Redi
Flies do not spontaneously arise from decaying meat.
Louis Pasteur
Spontaneous generation does not occur with bacteria.

9. Redi’s Experiment
Manipulated (independent variable) was the covering on the jar.

10. Pasteur’s Experiment
Manipulated (independent variable) was boiling the broth in one flask.

11. The Needs of Living Things
Energy
Water
Living space
Stable internal conditions (homeostasis)

12. Organisms use food as their source of energy.
Autotrophs- (auto means self; troph means feeder ) organisms that make their own food.
Heterotrophs- (hetero-means other) organisms that cannot make their own food.

13. The Cell Theory All living things are composed of cells.
Cells are the basic unit of structure and function in living things.
All cells are produced from other cells.

14. Cell Theory All living things are made up of cells.
Cells are the smallest working units of all living things.
All cells come from preexisting cells through cell division.

15. Definition of Cell
A cell is the smallest unit that is capable of performing life functions.

16. Examples of Cells Amoeba Proteus Plant Stem Bacteria Red Blood Cell
Nerve Cell

17. Prokaryotic Eukaryotic
Two Types of Cells
Prokaryotic
Eukaryotic

18. Prokaryotic Do not have structures surrounded by membranes
Few internal structures
One-celled organisms, Bacteria

19. Eukaryotic Contain organelles surrounded by membranes
Most living organisms
Plant
Animal

20. Cell Size

21. Cell Structure & Function

22. “Typical” Animal Cell

23. “Typical” Plant Cell

24. Cell Parts
Organelles

25. Surrounding the Cell

26. Cell Membrane
Outer membrane of cell that controls movement in and out of the cell
Double layer

27. Cell Wall Most commonly found in plant cells & bacteria
Supports & protects cells

28. Movement Across the Plasma Membrane
A few molecules move freely
Water, Carbon dioxide, Ammonia, Oxygen
Carrier proteins transport some molecules
Proteins embedded in lipid bilayer
Fluid mosaic model – describes fluid nature of a lipid bilayer with proteins

30. Membrane Proteins 1. Channels or transporters 2. Receptors
Move molecules in one direction
2. Receptors
Recognize certain chemicals

31. Membrane Proteins 3. Glycoproteins 4. Enzymes Identify cell type
Catalyze production of substances

32. Cell Walls Found in plants, fungi, & many protists
Surrounds plasma membrane

33. Cell Wall Differences
Plants – mostly cellulose
Fungi – contain chitin

34. Inside the Cell

35. Nucleus Directs cell activities
Separated from cytoplasm by nuclear membrane
Contains genetic material - DNA

36. Nucleus Control center of cell Double membrane Contains Chromosomes
Nucleolus

37. DNA Hereditary material Chromosomes Chromatin DNA Protiens
Form for cell division
Chromatin

38. Nuclear Membrane Surrounds nucleus Made of two layers
Openings allow material to enter and leave nucleus

39. Nuclear Envelope Separates nucleus from rest of cell Double membrane
Has pores

40. Chromosomes In nucleus Made of DNA
Contain instructions for traits & characteristics

41. Nucleolus Inside nucleus Contains RNA to build proteins

42. Nucleolus Most cells have 2 or more Directs synthesis of RNA
Forms ribosomes

43. Cytoplasm Gel-like mixture Surrounded by cell membrane
Contains hereditary material

44. Endoplasmic Reticulum
Moves materials around in cell
Smooth type: lacks ribosomes
Rough type (pictured): ribosomes embedded in surface

45. Ribosomes Each cell contains thousands Make proteins
Found on ribosomes & floating throughout the cell

46. Mitochondria
Produces energy through chemical reactions – breaking down fats & carbohydrates
Controls level of water and other materials in cell
Recycles and decomposes proteins, fats, and carbohydrates

47. Mitochondria
Have their own DNA
Bound by double membrane

48. Mitochondria Break down fuel molecules (cellular respiration)
Glucose
Fatty acids
Release energy
ATP

49. Golgi Bodies Protein 'packaging plant' Move materials within the cell
Move materials out of the cell

50. Golgi Apparatus Involved in synthesis of plant cell wall
Packaging & shipping station of cell

51. Golgi Apparatus Function
1. Molecules come in vesicles
2. Vesicles fuse with Golgi membrane
3. Molecules may be modified by Golgi

52. Golgi Apparatus Function (Continued)
4. Molecules pinched-off in separate vesicle
5. Vesicle leaves Golgi apparatus
6. Vesicles may combine with plasma membrane to secrete contents

54. Lysosome Digestive 'plant' for proteins, fats, and carbohydrates
Transports undigested material to cell membrane for removal
Cell breaks down if lysosome explodes

55. Lysosomes Contain digestive enzymes Functions Aid in cell renewal
Break down old cell parts
Digests invaders

56. Vacuoles Membrane-bound sacs for storage, digestion, and waste removal
Contains water solution
Help plants maintain shape

57. Vacuoles Membrane bound storage sacs
More common in plants than animals
Contents
Water
Food
wastes

58. Chloroplast Usually found in plant cells Contains green chlorophyll
Where photosynthesis takes place

59. Plant cells
Onion cell
Elodea cells
Cork cell

60. “Typical” Plant Cell

61. Plant Cell

62. Animal Cells
Blood cells
Frog blood cells
Cheek Cells

63. “Typical” Animal Cell

64. Animal Cell

66. Chloroplasts Derived form photosynthetic bacteria
Solar energy capturing organelle

67. Photosynthesis Takes place in the chloroplast
Makes cellular food – glucose

68. Levels of Organization
SONGS

69. ORGANISM SYSTEM ORGAN TISSUE CELL ORGANELLE MACROMOLECULE MOLECULE
ATOM
MOLECULE
MACROMOLECULE
ORGANELLE
CELL
TISSUE
ORGAN
SYSTEM
ORGANISM

70. ATOMS
Smallest part of matter
NON-living

71. Molecules
2 or more bonded atoms
Form compounds
NON-living

72. Macromolecule Very large molecules
Proteins, fats, carbohydrates, nucleic acids
NON-living

73. Organelles
“Tiny organs”
Made of macromolecules

74. Cell
Made of organelles
Basic unit of structure & function
LIVING

75. Tissue
The same kind cell working together
Living

76. Organs
Tissues that work together
Living

77. Systems
Organs that work together
Living

78. Organism Entire living things (organisms) Usually made of systems
May be a single cell
Living

79. Population
Same type of organism living together

80. Community
Several populations living together
Population interact

81. Ecosystem
A biotic (living) community plus the abiotic (nonliving) features

82. Biome
Similar ecosystems on earth together

83. Biosphere Whole living layer around the globe
Includes abiotic features

84. Tissue Organ System Organism Atom Molecule Macromolecule Organelle
Cell
Tissue
Organ
System
Organism
Population
Community
Ecosystem
Biome
Biosphere

85. Cellular organization
Cells
Tissue
Organs
Organ systems