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8.2 Chromosome scaffolds

Most of the chromosomal DNA chains within the interphase nucleus are believed to be held on a scaffold or backbone structure made from various proteins, with loops of between 20 and 200 kb extruding from attachment sites. This chromosome structure is shown schematically in Figure 40. The scaffold, as well as permitting further compaction, serves to bring the DNA together in organised regions. There are many different protein components of these scaffolds, amongst them DNA topoisomerases.


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Beethoven (Part 15 of 18)
"Beethoven was a German Composer and pianist.  His music fell in a transitional period between Classical and Romantic music. Beethven studies with Haydn.  Even after his hearing began to deteriorate he still composed, conducted and even performed his music.
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Age Word Problems, #1 (Algebra) - Khan Academy
Age word problems. This video starts off with a black screen because the narrator uses it as a 'chalkboard'. This video is appropriate for older middle and high school students. (07:12)
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Introduction

This is the fifth and final unit in the MSXR209 series on mathematical modelling. In this unit we revisit the model developed in the first unit of this series on pollution in the Great Lakes of North America. Here we evaluate and revise the original model by comparing its predictions against data from the lakes before finally reflecting on the techniques used.

This unit, the fifth in a series of five, builds on ideas developed and introduced in Modelling pollution in the Great Lakes
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Except for third party materials and/or otherwise stated (see terms and conditions) the content in OpenLearn is released for use under the terms of the Creative Commons Attribution-NonCommercial-Share

2.9 Summary

In this section, I started by emphasising the fact that the computer, which has become more or less omnipresent in modern society, is a tool like any other.

I went on to look at the special nature of that tool, establishing that its function is to capture, store, present, exchange and manipulate interesting aspects of the world.

I then introduced the idea of two contrasting realms: the analogue world we inhabit and the digital interior world of the computer. When we capture featur
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Learning outcomes

After studying this course, you should be able to:

  • understand the legal framework of the Health and Safety at Work etc. Act 1974 and Regulations associated with it

  • understand the employers’, employees’ and visitors’ duties

  • evaluate hazards and risks in order to carry out a risk assessment

  • understand the legal requirement to report any accident or dangerous occurrence

  • develop risk assessments for scientific laborat
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8.3 Actividad

Actividad 8.3

In this activity you are going to find out about another interesting hotel, this time in Santiago de Cuba, which overlooks the house of Diego Velázquez, the first Spanish governor of Cuba.

DIEGO VEL
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Cornerstones: Irish Americans
WGTE Preview: They came for the opportunity. They stayed because they had made a home for themselves and their families. The Irish provided a crucial cornerstone in the building of Toledo.  Video is of good quality and good for middle elementary and middle school students. (01:19)
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The DPS protein compacts the eubacterial chromosome during stress

When an E. coli cell enters into stationary phase, transcription and cell division cease completely. In such cells, the normal chromatin components, such as those described above, are replaced by a negatively charged protein called DPS. The interaction between DPS and DNA appears to be a specialised bacterial adaptation to survive starvation. In normal conditions of growth, the DNA within the bacterial cell is distributed evenly throughout the entire cytoplasm. In stationary cells, how
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1.1.5 Clearing the previous calculation

To clear the previous calculation, click the 'C' button.

Provided that no operation has been performed on an entered number, an incorrect entry can be deleted one digit at a time by clicking the 'Backspace' button. (This is labelled 'Back' on some versions of the Windows calculator.)


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US Navy's "warfighter game-changer" railgun set for sea tests
Subscribe: http://smarturl.it/reuterssubscribe Apr. 21 - The U.S. Navy says it will test its prototype electromagnetic railgun aboard a naval vessel for the first time in 2016. The railgun can hurl a 23 lb. missile more than a hundred miles and is described by the Navy as "a true warfighter game-changer". Rob Muir reports. More Innovations: http://smarturl.it/Innovations Subscribe: http://smarturl.it/reuterssubscribe Reuters tells the world's stories like no one else. As the largest internati
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Zan Barry, MIT Community Wellness
Zan Barry talks about the holistic techniques and trainings for stress management and well-being offered by MIT Community Wellness.
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Mrs. Kennedy Speaks Following JFK's Death
Less than two months after her husband was killed, Mrs. Kennedy made a newsreel tape, thanking the American people for all their expressions of sympathy after JFK's death.  The tape was played in movie theaters, before the feature film was shown, and is now maintained in the National Archives.
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Shapes Around Our School
Look around a school...how many different shapes can you find???  This video takes a tour of a school pointing out different shapes.
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Development of Chesapeake Society to 1660
Development of Chesapeake Society to 1660
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2.12.1 Fluid loss

During an average day, a person in a temperate climate such as the UK, loses about 2.5 litres of water.

Activity 35

How is water lost from the body?

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All About Flag Day - June 14th
We all know the American flag, but how did it come about? Explore the origins of the flag and the history of why we celebrate it on Flag Day. (01:29)
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Review of Cat Muscles of the Anterior Leg
Specific anterior muscles of the leg of a dissected cat are reviewed with proper pronunciation by a professor. Origin, insertion, and functions are given. This would make a great review for students preparing for a cat muscle practical. 3:51 min. Color video with sound.
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Virtual Maths - 2D Shapes, triangle
Interactive simulation demonstrating calculation of area of a triangle
Author(s): Leeds Metropolitan University

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Getting Started: 07 Reshaping a path outline
Enhance your scenes or make your movie fit a desired length by getting rid of your least interesting, lowest quality footage. See how Smart Trim can automatically cut bad footage or recommend cuts to let you make the final decision.
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