Membrance and cellular transport.

Membrance and cellular transport.
Video title:Lipids and Membranes part 1 and part 2

Video tilte:Membrane Transport

Video Title:Cell Membrane, Active Transport

Video title: Cellular Transport through Proteins

In order to maintain homeostasis, cells require a mechanism for regulating the molecules that move into and out of the cell. The phospholipid bilayer membrane contains integral proteins that perform this regulation in three ways. Passive transport requires no energy or integral proteins, and involves molecules working with the flow of the concentration gradient to move from areas of high solute concentration to areas of low solute concentration. Facilitated transport also requires no energy, but uses the integral proteins embedded in the cell to facilitate the transport of molecules across the cell membrane. The last method of transport, active transport, requires both energy and an integral protein to transport a molecule across a cell membrane. Energy is required because active transport moves molecules from areas of low solute concentration to areas of high solute concentration, and thus works against the concentration gradient. With active transport, the integral protein captures the molecule it wishes to transport and pumps it across the cell membrane.

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Lipid

Lipids.

Amino acids, Protein;Enzymes and mechanism, Metablolism of protein;Myoglobin and Hemoglobin

PROTIEN, AMINO ACIDS, ENZYMES.

Amino Acids part 1 and part 2



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Protein Structure lecture part1 to part4


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Enzymes part I to part 3




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10 Enzyme Mechanisms part 1 and part 2



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Myoglobin and Hemoglobin


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glitter-graphics.comDr. Dasgupta

Carbohydrate and How energy (ATP) is Produced In Body. Perfect lectures!!

CARBOHYDRATE.






Living cells get the energy they need to survive through metabolism. The two major processes of metabolism are photosynthesis and respiration. In this video we will look at the process of respiration, specifically focusing on glycolysis and fermentation.
Upon completing the lab we found that glucose produced the most CO2 during the process of glycolysis/ fermentation. This is because glucose, unlike the other carbohydrates tested, did not need to be broken down before going through glycolysis. [ Please take note: PAUSE the video to read the NOTES if you find too fast!!]








Animals need energy to carry out the functions of life. Taking the products of plants (Oxygen and Glucose), along with water, we create what the plants need (Carbon Dioxide) to live. At the same time, this beautifully designed system provides animals, like we humans, with all the energy necessary for life
ATP stands for Adenosine TriPhosphate. ATP is how we store and use energy, think of it as the cells currency. Whenever the body needs something it "buys" it with some ATP. ATP is a molecule call Adenine (adenosine once phosphates attach) with three phosphate molecules attached. Picture a kite(adenosine) with 3 big bows(phosphates) attached to the tail. The bond between the second and third phosphate is considered a high energy bond. When that third phosphate is broken off a lot of energy is available. When this happens ATP becomes ADP (Adenosine DiPhosphate). Cellular Respiration is the process the body uses to make ADP into spendable ATP once again.
Glucose, a sugar, has a chemical shape of many elements such as carbon, oxygen, and hydrogen. Inside our cells glucose is changed many times over as it is broken down by the body. This happens just out side and mainly inside an organelle called the mitochondria. Every element has protons and electrons, as the body breaks down sugar it will separate the electrons from the protons to use them to make a lot of ATP. Try to pay attention to two main things..
1. What are the carbon doing? How many are there? Follow the black circles(carbon) and you will really start to get this process quicker.
2. Where are the electrons going? How are they getting there? What is carrying them there? Electrons carry most of the power that will eventually make the ATP in the end.
Videos:Bioenergetics part 1 and part 2


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Health & Enzymes The Basic of Digestion and Metabolism

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PROTEINS

Anatomy Physiology-Body Chem: Protein

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Protein Functions in the Body

Protein synthesis: an epic on the cellular level
Directed in 1971 by Robert Alan Weiss for the Department of Chemistry of Stanford University and imprinted with the "free love" aura of the period, this short film continues to be shown in biology class today. It has since spawn a series of similar funny attempts at vulgarizing protein synthesis. Narrated by Paul Berg, 1980 Nobel prize for Chemistry.
Replication, Transcription, and Translation.

What Is DNA?


The process of DNA replication, and protein synthesis through transcription and translation


Transcription and Translation


Protein Synthesis, Translation
Translation - the process of converting the mRNA codon sequences into an amino acid polypeptide chain.
1. Initiation - A ribosome attatches to the mRNA and starts to code at the FMet codon (usualy AUG, sometimes GUG or UUG).
2. Elongation - tRNA brings the corresponding amino acid to each codon as the ribosome moves down the mRNA strand.
3. Termination - Reading of the final mRNA codon (aka the STOP cod
on), which ends the sythesis of the peptide chain and releases it.

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From DNA to Protein