Physical Chemistry
This item addresses concepts such as: entropy, free energy, first law of thermodynamics, basic reaction kinetics.
Molecular Motors
Discover what controls how fast tiny molecular motors in our body pull through a single strand of DNA. How hard can the motor pull in a tug of war with the optical tweezers? Discover what helps it pull harder. Do all molecular motors behave the same?
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Fracture surface in a liquid crystalline polymer, oriented by a magnetic field
Above their melting point, liquid crystalline polymers exhibit a mesophase within which, although able to flow and are not arranged in a crystal, they exhibit long range orientational order. This molecular alignment can be exploited to make high strength and stiffness fibres such as Kevlar, or even mouldable thermotropics such as Vectra. Molecular alignment can also be controlled by an external applied field; a property exploited in liquid crystal displays. This polymer has been subjected to
Spherulite in poly-3-hydroxy butyrate (PHB)
Polymer melts often crystallise from heterogeneous nuclei to form ribbon-like lamellae, which have a folded chain molecular structure. They commonly radiate outwards from the nucleation point, to form spherical features called spherulites - which are often quite large. The characteristic Maltese cross pattern, seen when viewed between crossed polars, results from isoclinic fringes formed when one of the principal vibration directions is approximately parallel to the polariser. In some cases
A Manual of Online Molecular Biology Techniques
This is a collection of tried-and-true technique descriptions used in teaching postgraduate students in the Department of Molecular & Cell Biology at UCT.
9 Summary
This Unit studies 'proteins'. Starting with a simple analysis of the molecular make up, the Unit moves on to look at the importance of protein and how they are digested and absorbed
8.4 Nitrogen balance
This Unit studies 'proteins'. Starting with a simple analysis of the molecular make up, the Unit moves on to look at the importance of protein and how they are digested and absorbed
8.1 Protein balance
This Unit studies 'proteins'. Starting with a simple analysis of the molecular make up, the Unit moves on to look at the importance of protein and how they are digested and absorbed
1.7.4 Nitrogen balance
This Unit studies 'proteins'. Starting with a simple analysis of the molecular make up, the Unit moves on to look at the importance of protein and how they are digested and absorbed
1.7.2 Too much protein
This Unit studies 'proteins'. Starting with a simple analysis of the molecular make up, the Unit moves on to look at the importance of protein and how they are digested and absorbed
1.6.3 A faulty shape
This Unit studies 'proteins'. Starting with a simple analysis of the molecular make up, the Unit moves on to look at the importance of protein and how they are digested and absorbed
1.6.2 Determining the shape
This Unit studies 'proteins'. Starting with a simple analysis of the molecular make up, the Unit moves on to look at the importance of protein and how they are digested and absorbed
5 The chemistry of amino acids
This Unit studies 'proteins'. Starting with a simple analysis of the molecular make up, the Unit moves on to look at the importance of protein and how they are digested and absorbed
Case It! Case Study Learning via Simulations of Molecular Biology Techniques
Case It! is an NSF-sponsored project to promote collaborative case-based learning in biology education worldwide. This paper describes the latest version of the Case It! simulation software (DNA gel electrophoresis, Southern blotting, and PCR). Students use these open-ended molecular biology computer simulations to analyze case studies involving genetic diseases, then discuss results with their peers at other institutions via web-based "poster sessions." They also use Case It! software to gather
Bio-engineered Animals and Models of Human Disease
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Motion Commotion
Students learn why and how motion occurs and what governs changes in motion, as described by Newton's three laws of motion. They gain hands-on experience with the concepts of forces, changes in motion, and action and reaction. In an associated literacy activity, students design a behavioral survey and learn basic protocol for primary research, survey design and report writing.
La domination de l'espace et les réseaux de satellite (audio)
La technologie de ce siècle évolue désormais en suivant la loi de Moore, selon laquelle les performances des composants électroniques évoluent exponentiellement avec une constante de temps de deux ans. De là découlent d'abord la percée des micro-ordinateurs puis, plus inattendue, la croissance également exponentielle des réseaux de communication. Quels sont les facteurs de cette expansion qui crée la société de l'information ? L'espace est le moyen global de transfert et distrib
May the Force Be With You: Thrust
In this lesson, students will study how propellers and jet turbines generate thrust. This lesson focuses on Isaac Newton's 3rd Law of Motion, which states that for every action there is an equal and opposite reaction.
Pop Rockets
Students design and build a paper rocket around a film canister, which is used as the engine. An antacid tablet and water are put into the canister, react to form carbon dioxide gas, and act as the pop rocket's propellant. With the lid snapped on, the continuous creation of gas causes pressure to build up until the lid pops off, sending the rocket into the air. The pop rockets demonstrate Newton's third law of motion: for every action, there is an equal and opposite reaction.
