Powering the Cell: Mitochondria - YouTube:
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Showing posts with label Cells. Show all posts
Showing posts with label Cells. Show all posts
Tuesday
Introduction to Cells
Watch this beautiful animation showing a tour from organs, tissues to cells and organelles. Click here
Wednesday
The Cell Cycle
Mr Anderson explains more about the Cell Cycle (with a nice link to enzymes!! and a simple comparison of purpose and outcome of Meiosis/Mitosis)
Friday
Saturday
Animation of Cellular Respiration
Watch the following clip to see the process of cellular respiration (inputs/outputs and locations within the cell)
Osmosis - Hypertonic/Hypotonic
Watch the following clip to see what happens to the cell when it is in a hypertonic (high solute) or hypotonic (high water) solution.
Friday
Stages of Mitosis
There are three videos that show Mitosis using different modelling.
Video one - 5min
Video two - 6min details of each stage
Video three - 3min Mr W's Mitosis rap
Video one - 5min
Video two - 6min details of each stage
Video three - 3min Mr W's Mitosis rap
DNA Replication
Hank gives a good overview of DNA structure and the process of DNA synthesis or replication.
Watch the video
Watch the video
Sunday
Getting Energy - How do Mitochondria work?
This interactive activity summarises the process of producing ATP from glucose (produced by plants).
This 5 minute video explains what happens to our muscle cells when we train/exercise and discusses where there are increases/decreases in mitochondria in cells.
A reminder about important organelles within an animal cell - use this information to complete the handout on Cellular Function your teacher provides you.
Tuesday
Photosynthesis
Have you seen our photosynthesis essay?
Big thanks to all who have contributed. Not to late to add your bit. It could do with some more images and color.
Big thanks to all who have contributed. Not to late to add your bit. It could do with some more images and color.
Biozone activities for Cells topic
A number of students have asked me which activities you should attempt from our biozone activity book. Here is a bit of a list.
Life processes at the cellular level
General cells;
Cell Size and Shape 106,
Plant cells 108,
Identifying structures in a plant cell 110,
Animal cells 111,
Identifying structures in an animal cell 113,
Membranes and transport;
The structure of membranes 118,
The role of membranes in cells 120,
Passive transport processes 121,
Ion Pumps 124,
Exocytosis and endocytosis 125,
Active and passive transport summary 126,
Limitations to cell size 127,
Photosynthesis;
Chloroplasts 138,
Photosynthesis 139,
Energy in cells 132,
Respiration;
The role of ATP in cells 133,
ATP production in cells 134,
Glucose Catabolism 135,
We will also cover Enzymes and DNA replication before our topic test.
Sunday
Tuesday
Thursday
Surface area to volume ratio experiment
One reason that cells are small is: Small objects have a larger surface area compared to their volume than large objects. This means that the transport of materials into and out of cells can occur easily through simple diffusion rather than requiring the more energy costly active transport.
We investigated this using some cubes cut from agar gel that had an indicator added to it. By placing the agar blocks into Sodium Hydroxide solution the bright pink colour of the agar blocks showed us how far the Sodium Hydroxide had diffused.
We investigated this using some cubes cut from agar gel that had an indicator added to it. By placing the agar blocks into Sodium Hydroxide solution the bright pink colour of the agar blocks showed us how far the Sodium Hydroxide had diffused.
Wednesday
Bozeman Biology - Photo.........synthesis
In this clip you can see more about the two phases of photosynthesis.
Photo (light dependent stage)
and synthesis (also known as the Calvin Cycle, Carbon Fixation or Light Independent stage).
In the first stage inputs are LIGHT, WATER and require CHLOROPHYLL and ADP, the result is ADP (Adenine DI-phosphate) is 'charged' to ATP (Adenine TRI-phosphate) and water is split into oxygen and hydrogen.
The second stage requires HYDROGEN generated from 1st stage and CARBON DIOXIDE and these are used to synthesis or make GLUCOSE using the energy currency of ATP also made in 1st stage.
Photo (light dependent stage)
and synthesis (also known as the Calvin Cycle, Carbon Fixation or Light Independent stage).
In the first stage inputs are LIGHT, WATER and require CHLOROPHYLL and ADP, the result is ADP (Adenine DI-phosphate) is 'charged' to ATP (Adenine TRI-phosphate) and water is split into oxygen and hydrogen.
The second stage requires HYDROGEN generated from 1st stage and CARBON DIOXIDE and these are used to synthesis or make GLUCOSE using the energy currency of ATP also made in 1st stage.
Tuesday
Respiration ATP and ADP Question
Had a question from an ex-student who wanted some help with ATP and stuff. Here's what i sent them. Thought it might be not too bad for year twelve biology students also:
ATP and ADP are the two molecules involved in the use of energy by cells. ATP is often referred to as the energy currency of the cell.
Cells can use ATP where ever they need to expend energy particularly in processes such as active transport of materials through cell and organelle membranes.
ADP is Adenosine Diphosphate the low energy version of the energy carrier. During respiration in the mitochondrion it is "charged" with energy by having a third Phosphate group added to create ATP or Adenosine Triphosphate .
There are several stages in the metabolism (chemical reactions that occur in living things) of glucose. the first stage is called glycolysis (in the cytoplasm) followed by the krebs cycle and finally the electron transport chain (both in the mitochondrion).
The electron transport chain is the stage of respiration that generates the most number of ATP molcules per molecule of glucose entering the respiration process.
Check out these videos for more information
Visit the wikipedia links and read just the first bits that tell you what things are, watch the videos twice
Monday
What are enzymes and why are they important?
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