Transcript Levels of Organization and Cells PowerPoint

Levels of Organization – Cell
Theory – Homeostasis
Levels of Organization – Cell
Theory – Homeostasis
The Cell Theory
On an odd page write the question and answer OR restate the question in
your answer.
1. What are the three postulates of the Cell Theory?
1. All living things are composed of cells
2. Cells are the basic unit of life
3. All cells come from preexisting cells
2. Who used one of the first microscope?
• Robert Hooke and Leeuwenhoek
3. How did Leuwenhoek discover bacteria or animalcules?
• He studied his own dental plaque and saw unicellular organisms through
the microscope.
pg. 104-107
Cell and Homeostasis Reading – Weekly Grade Due end of class
1. Define homeostasis, cellular respiration , photosynthesis.
2. Cellular respiration and photosynthesis are related because both are responsible for
making energy for the cell to function / photosynthesis’s output is CR’s input and CR’s
output is Photosynthesis’s input.
3. Animal cells do not undergo photosynthesis because animals eat their food and get
glucose that way, whereas plants make their food.
Organelles Responsible
Input
Output (waste products)
Photosynthesis
Chloroplast
Carbon dioxide and
Sunlight
Glucose and Oxygen
Cellular Respiration
Mitochondria
Glucose and Oxygen
Carbon dioxide and Energy
for cell ( ATP)
5.
6.
7.
8.
Define cell membrane and diffusion.
Diffusion does not require energy.
When waste material builds up it acts as a poison to the cell.
Other materials move in opposite direction of diffusion and
requires energy to transport the material.
9. The energy need to transport material across the cell
membrane comes from cellular respiration.
10.Define cell division.
11.Multicellular organisms use cell division for growth and repair.
Unicellular organisms use cell division for reproduction.
Photosynthesis and Cellular Respiration
Organelle
How will you remember this organelle?
Lysosomes
Cell Wall
Golgi Apparatus
Chloroplast
Vacuoles
Lysosomes clean the cell – Lysol cleans a house
A wall is strong and sturdy – the cell wall is strong and protects the cell
Like the post office – sends and receives cell substances
Takes in light energy to make food for cell
Storage container
Cytoplasm
Ribosomes
Cell Membrane
Cytoplasm is gel and hold organelles like hair-gel holds a persons hair
Ribs are made of proteins – ribosomes make proteins and start with rib
Gate keeper of cell
Mitochondria
Nucleus
Powerhouse of the cell- makes energy
Brain of cell , controls all functions , contains the DNA
Endoplasmic
Reticulum
Creates substances for the cell and helps ribosomes make proteins
Lesson Launcher 10/11
All living things contain carbon and are called organic.
Anything that has never been alive is called inorganic.
Carbon dating and radioactive dating use isotopes to
date objects from the past. How is carbon dating and
radioactive dating similar and different?
Carbon Dating
• Organic objects ( living)
• Accurate for 60,000
• Example of organic: Bone
Fossils , Dead leaves,
animals
Both
• Use isotopes to date
objects from the past
• Can date things that
were once alive
Radioactive Dating
• Organic molecules and
inorganic molecules (living
and nonliving)
• +4.6 billion years old
• Example of inorganic: rocks,
water, dirt