7.5 Summary of Section 7

  1. Site-directed mutagenesis is an important technique for studying protein function. Using recombinant DNA technology, selected amino acids can be substituted with different residues to alter the structure and function of a protein. One widely used method employs primer extension. SDM studies can help identify residues that are critical for interactions or catalytic activity.

  2. Protein–protein interactions can be studied in a number of different
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The sargassum fish can camouflage itself to look exactly like a sargassum plant and ambush unsuspecting prey with deadly ease. See these fish in action as well as learn information about them. The video can be used with a lesson on animal defenses and adaptations, specifically camouflage, protective resemblance, and mimicry. Run time 01:42.
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Mitochondria are cell organelles which play a critical role in energy supply in most higher organisms. But how did that role develop and how do they achieve this function? In the latest episode of the RVC Podcast Dr Michelangelo Campanella discusses these questions and relates his research findings on how poor mitochondrial function can contribute greatly to disease processes.
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5.9 Membrane filtration

Membrane filtration is a process whereby particles smaller than about 10−2 mm (which can pass through sand filters) are removed using synthetic polymeric membranes and a high pressure. The membrane effectively acts as a sieve.

It is increasingly becoming popular as an advanced treatment process for water (especially for removal of Cryptosporidium) and wastewater (where water reuse takes place), and various possibilities are:

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7.340 Immune Evasion: How Sneaky Pathogens Avoid Host Surveillance (MIT)
Every infection consists of a battle between the invading pathogen and the resisting host. To be successful, a pathogen must escape the many defenses of the host immune system until it can replicate and spread to another host. A pathogen must prevent one of three stages of immune function: detection, activation, or effector function. Examples of disease-specific immune evasion and the mechanisms used by pathogens to prevail over their hosts' immune systems are discussed. Also considered is what
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An Implementation Brief: Evaluation of an Android-based mHealth System for Population Surveillance i
By: Jamia Presented by Zeshan A. Rajput
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This computer animated video is a circulatory system rap about the heart, sending blood to the lungs, and  arteries.  Lyrics are included on the screen.  (02:00)

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This rich learning object is used to introduce yeast cytology to students taking Module D24BS3 Brewery Yeast Management as part of the MSc in Brewing Science. The virtual cell permits the students to understand structure and function of yeast organelles.
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7.342 Cancer Biology: From Basic Research to the Clinic (MIT)
This course is one of many Advanced Undergraduate Seminars offered by the Biology Department at MIT. These seminars are tailored for students with an interest in using primary research literature to discuss and learn about current biological research in a highly interactive setting. In 1971, President Nixon declared the "War on Cancer," but after three decades the war is still raging. How much progress have we made toward winning the war and what are we doing to improve the f
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Whitey's Lindy Hoppers excerpt from "Hellzapoppin" (1941) featuring Frankie Manning (in the Mechanic's Dungarees). (2:22)
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4.1 Global coal reserves

Having looked in detail at how coal is mined, this section focuses on those areas of the world that produce it. It begins by looking at how and why reserves of coal are distributed throughout the UK and Europe, before reviewing the current global reserves of coal.


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This short video gives excellent real life footage of a male Giant Panda dust bathing. This is a great resource to help build background knowledge and to help make real world connections between nature and the classroom. (Less Than 2 Minutes)
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This fascinating look at world of international ballet competitions features a young Mikhail Baryshnikov competing and winning in Moscow in 1969. The Moscow International Competition of Ballet Artists at the Bolshoi Theater attracts young dancers from around the world to compete for gold and silver medals, much like the Olympics.
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2.3.2 Inner experiences

A second kind of data is people's inner experiences, including their feelings, beliefs and motives. These cannot be directly seen from the outside; they remain private unless freely spoken about or expressed in some other way. Examples of these inner experiences include feelings, thoughts, images, representations, dreams, fantasies, beliefs and motivations or reasons. These are only accessible to others via verbal or written reports or as inferred from behaviours such as non-verbal communicat
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2 Discrimination in the labour market: introduction

Discrimination can manifest itself in all aspects of life. It may be evident in the type and location of housing available to certain groups, in their access to quality education and health care or how they are treated in the labour market. We will focus on the last of these considerations and, in particular, why the labour market status of some groups of workers is significantly worse than that for the population at large. This does not mean that discrimination in the labour market is a more
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6.2 The hypothalamus as central regulator

Research in the past 30–40 years has established that the hypothalamus, which lies below the thalamus and above the optic nerve chiasma and the pituitary gland in the brain, fulfils all of the functions listed above, at least in part. The main function of the hypothalamus is homeostasis. Factors such as blood pressure, body temperature, fluid and electrolyte balance, and body weight are held to constant values called the set-points. Although set-points can vary over time, from day to
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Mechanical forces play a decisive role during development of tissues and organs, during remodeling following injury as well as in normal function. A stress field influences cell function primarily through deformation of the extracellular matrix to which cells are attached. Deformed cells express different biosynthetic activity relative to undeformed cells. The unit cell process paradigm combined with topics in connective tissue mechanics form the basis for discussions of several topics from cell
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This series of tracks looks at social work practice around the world and compares attitudes and management techniques within the social work field. Material is taken from The Open University Course K315 Critical social work practice. The iTunes U team.
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"What Comes After" by Steve Watkins--The Pick of the Week from 60 second Recap®
In this video, teenage students will be introduced to "What Comes After" by Steve Watkins. Iris Wight has it rough. Her father's dead. Her best friend's family has decided they can't keep her. Alone and hurting, Iris ends up at horrible Aunt Sue's where her only solace is the goats ... and even those, Iris discovers, can be taken from her in an instant. The first half of "What Comes After" is a particularly tough read, but Iris is a compelling protagonist whose falling-apart life still has
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