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CELLS & HEREDITY

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Roger Cattle

on 21 April 2017

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Transcript of CELLS & HEREDITY

100,000,000,000,000
"All animals have cells."
Theodor Schwann
Chapter 1, Section 1:
Discovering Cells
CELLS: The basic structure of all living things.
PARTS OF A MICROSCOPE
CELL THEORY
1. All living things are made up of cells.

2. Cells are the basic unit of structure and function in living things.

3. Cells reproduce to make other cells
CELLS & HEREDITY
MICROSCOPES
-First one invented around 1590
-Different types for different things
-Compound microscopes use lenses to focus light (like glasses)
-Image is multiplied twice

Robert Hooke
To Do:
1. Discuss Q3 grades
-Semester grade will be decided by 4th Q grades
2. Reminders.
3. Preview new text / unit
4. Other new items...
5. Start cell discussion
HOW BIG IS A CELL?
Different cells do different things.
pg. 7
http://learn.genetics.utah.edu/content/cells/scale/
One Hundred
Trillion
(that's 31,546 years in seconds)
Anton van Leeuwenhoek
-Invented first microscope that could focus light
-First discovered small, single celled organisms
"All plants have cells."
Matthias Schleiden
"All cells come from other cells."
Rudolf Virchow
Base
pg 32-37
SELECTIVELY PERMEABLE MEMBRANE
Allows & prevents certain substances to pass through.
DIFFUSION
The most common way small particles move across a cell membrane.
OSMOSIS
When water passes through a membrane.
PASSIVE TRANSPORT
Moving substances across a membrane.
ACTIVE TRANSPORT
Ch. 2 - Cell Processes and Energy
Section 1 -Photosynthesis
Section 2 - Respiration
PHOTOSYNTHESIS
The process by which a plant cell captures energy in sunlight and uses it to make food.
Photosynthesis takes place in chloroplasts.
Chloroplasts use energy from the sun to convert carbon dioxide and water into oxygen and sugars.
Photosynthesis Equation
Pg 44 - 48
CELLULAR RESPIRATION
Respiration is the process by which animals cells obtain energy.
Cellular respiration takes place in the mitochondria.
studied cork
studied
pond water
MOLECULES MOVE FROM HIGH CONCENTRATION TO LOW CONCENTRATION.
EQUILIBRIUM
Does NOT require energy.
Goes from high concentration to low concentration.
Moving substances across a membrane.
DOES require energy.
Goes from low concentration to high concentration.
stop at 2:20
TRANSPORT PROTEIN
ENGULFING
"ALL living things rely on photosynthesis."
-Mr. Cattle
During respiration, cells break down sugar and release energy.
Mitochondria take in sugar and oxygen and use them to produce carbon dioxide, water, and energy.
Cellular Respiration Equation
Pg 49 - 53
http://www.danoah.com/35-everyday-things-made-so-insanely-cool-under-a-microscope
EQUILIBRIUM
A balance of molecules on the inside and outside of the cell.

This is the goal of passive transport.
YES :-)
NO :-(
AUTOTROPH
Organisms that make their own food.
HETEROTROPH
Organisms that can not make their own food.
-First use of word 'cell', meaning 'small rooms'
-First person to observe cells using a microscope
-Built microscopes at same time as Hooke
Ch. 1, Sect. 4
"THE CELL IN ITS ENVIRONMENT
One type of passive transport...
Another type of passive transport...

Cellular

http://learn.genetics.utah.edu/content/cells/scale/
CELLS
TISSUES
ORGANS
MACROMOLECULES
(the 'building blocks of cells')
•Carbohydrates
(sugars & starches)
•Lipids
(fats & oils)
•Proteins
(meats, nuts,
& beans)
•Nucleic Acids
(DNA)
Protective layer around all cells.
"Brain" of the cell
ORGANELLES
Tiny structures inside a cell.

Each organelle has a specific job to do within the cell.
NUCLEUS
LYSOSOMES
CENTRIOLE
Always in pairs.
Part
Words
Part
Words
pg 19
Surrounded by a nuclear envelope.
Contains chromatin / DNA with instructions.
Contains a nucleolus.
Break down food and help recycle old cell parts.
Lots in animal cells, a few in plant cells.
Helps the cell divide.
Full transcript