ALL organisms are composed of cells which carry on the many functions needed to sustain life.

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ALL organisms are composed of cells which carry on the many functions needed to sustain life. • Cells are the fundamental unit of life • Plants and animals are made of cells

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ALL organisms are composed of cells which carry on the many functions needed to sustain life. Cells are the fundamental unit of life Plants and animals are made of cells. Functions of life. Division-performed by cells to produce more cells Taking in nutrients Releasing waste - PowerPoint PPT Presentation

Transcript of ALL organisms are composed of cells which carry on the many functions needed to sustain life.

Page 1: ALL organisms are composed of cells which carry on the many functions needed to sustain life.

ALL organisms are composed of cells which carry on the many functions needed to sustain life.

• Cells are the fundamental unit of life• Plants and animals are made of cells

Page 2: ALL organisms are composed of cells which carry on the many functions needed to sustain life.

Functions of life

• Division-performed by cells to produce more cells

• Taking in nutrients• Releasing waste• Using energy to do work• Producing materials the organism needs

Page 3: ALL organisms are composed of cells which carry on the many functions needed to sustain life.

One-celled organisms must contain parts to carry out all life functions.amoeba

Page 4: ALL organisms are composed of cells which carry on the many functions needed to sustain life.

One-celled organism parts:Bacteria

Page 5: ALL organisms are composed of cells which carry on the many functions needed to sustain life.

One-celled: paramecium

Page 6: ALL organisms are composed of cells which carry on the many functions needed to sustain life.

Multicellular organisms have specialized cells that perform different functions.

• These cells join together to form tissues that give organs their structure and enable organs to perform specialized functions within organ systems.

• Structures of specialized cells (like nerve & muscle) relate to the function that cell performs.

• Tissues that make up organs relate to the function the organ performs (heart valves control blood, air sacs in lungs maximize surface area for gas tranfer

• Components and functions or digestive, circulatory, and respiratory systems in humans interact.

Page 7: ALL organisms are composed of cells which carry on the many functions needed to sustain life.

Plant & Animal cells carry on life functions, so they have parts in common:

• Nuclei• Cytoplasm• Cell membranes• Mitochondria

PLANTS ONLY: • Chloroplasts• Cell wall

Page 8: ALL organisms are composed of cells which carry on the many functions needed to sustain life.

Plant cells

Page 9: ALL organisms are composed of cells which carry on the many functions needed to sustain life.

Plant cell parts

Page 10: ALL organisms are composed of cells which carry on the many functions needed to sustain life.

Animal cells

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Animal cell parts

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Page 13: ALL organisms are composed of cells which carry on the many functions needed to sustain life.

Levels of Organization

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Organism

Page 15: ALL organisms are composed of cells which carry on the many functions needed to sustain life.
Page 16: ALL organisms are composed of cells which carry on the many functions needed to sustain life.
Page 17: ALL organisms are composed of cells which carry on the many functions needed to sustain life.

Specialized Cells

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Page 19: ALL organisms are composed of cells which carry on the many functions needed to sustain life.

Nerve Cells

Page 20: ALL organisms are composed of cells which carry on the many functions needed to sustain life.

Blood Cells

Page 21: ALL organisms are composed of cells which carry on the many functions needed to sustain life.

Chemical Compounds in CellsElementssmallest

unit=atom

Compounds: smallest

unit=molecule

Inorganic Compounds

Organic Compounds contain carbon

Carbohydrates: energy

Starches: bread,

potatoes

Sugars: fruit, sweets

Proteins Made ofAmino acids

Include enzymes

Lipids=fats

Nucleic Acids

DNA

RNA

Page 22: ALL organisms are composed of cells which carry on the many functions needed to sustain life.

Movement Across the Cell membrane

substances move across the cell membrane

active transport

requires energy

passive transport

diffusion:high to low

concentrationosmosis-water


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