that certain minerals are required in the body and that some minerals form essential structural components of tissues;

that sodium, potassium, calcium and chloride ions are important in maintaining the correct composition of cells and of the tissue fluids around them (homeostasis);

that some minerals are essential components of important molecules such as hormones and enzymes;

that the correct]]> After studying this Unit you should know:

• that certain minerals are required in the body and that some minerals form essential structural components of tissues;

• that sodium, potassium, calcium and chloride ions are important in maintaining the correct composition of cells and of the tissue fluids around them (homeostasis);

• that some minerals are essential components of important molecules such as hormones and enzymes;

• that the correct]]> The dormant state of bears differs from true hibernation in that the body temperature does not fall below 31–35° C and a major disturbance (such as an intruding biologist) can arouse them to full activity in a few minutes. Dormant bears do not eat, drink, urinate or defaecate, the heart rate drops from 50–60 beats min⁻¹ to 8–12 beats min⁻¹, and oxygen consumption is only 32% of that of actively foraging bears. Nonetheless, the rate of protein turnover, as mea]]> The dormant state of bears differs from true hibernation in that the body temperature does not fall below 31–35° C and a major disturbance (such as an intruding biologist) can arouse them to full activity in a few minutes. Dormant bears do not eat, drink, urinate or defaecate, the heart rate drops from 50–60 beats min⁻¹ to 8–12 beats min⁻¹, and oxygen consumption is only 32% of that of actively foraging bears. Nonetheless, the rate of protein turnover, as mea]]>

  In this section, you will meet one of the ways in which scientists are very precise about the way that they use ordinary words. Spot the difference between ‘The golden mole evolved webbed hind feet so that it can shovel sand backwards as it moves forwards’ and ‘The golden mole evolved webbed hind feet and]]>

  In this section, you will meet one of the ways in which scientists are very precise about the way that they use ordinary words. Spot the difference between ‘The golden mole evolved webbed hind feet so that it can shovel sand backwards as it moves forwards’ and ‘The golden mole evolved webbed hind feet and]]>

  Figure 6 is a slightly more complex graph than those used in S182_1. In particular, the masses of the mammals that are plotted on the horiz]]>

  Figure 6 is a slightly more complex graph than those used in S182_1. In particular, the masses of the mammals that are plotted on the horiz]]>

  You will be using some more maths in this section. Remember that areas are measured in units such as m², which is read as metres squared or, more usually, square metres. Volumes are measured in units such as m³, which you should read as metres cubed or, more usually, cubic metres. Most mea]]>

  You will be using some more maths in this section. Remember that areas are measured in units such as m², which is read as metres squared or, more usually, square metres. Volumes are measured in units such as m³, which you should read as metres cubed or, more usually, cubic metres. Most mea]]> Given the amino acid sequence of a protein, it is possible to use computational methods to try to fit the sequence into folding patterns. This operation is called ‘threading’. Different conformations can be ranked according to how well they accommodate the sequence; that is, the most stable conformation is ranked highest. Of course, this technique can only be used for those folds that have been definitively described by X-ray diffraction or NMR, and the structure of those proteins whose s]]> Given the amino acid sequence of a protein, it is possible to use computational methods to try to fit the sequence into folding patterns. This operation is called ‘threading’. Different conformations can be ranked according to how well they accommodate the sequence; that is, the most stable conformation is ranked highest. Of course, this technique can only be used for those folds that have been definitively described by X-ray diffraction or NMR, and the structure of those proteins whose s]]> Views – whether from citizens or consumers – are diverse, although there are similarities within and between groups: for instance, on the need for respect. Diversity of opinion as well as diversity of need must be addressed by frontline managers. A few of the individuals and groups noted by our testers include: users of services for mental health, physical disability, older people, children and families; carers; workers; union representatives; managers; the general public; local and natio]]> Views – whether from citizens or consumers – are diverse, although there are similarities within and between groups: for instance, on the need for respect. Diversity of opinion as well as diversity of need must be addressed by frontline managers. A few of the individuals and groups noted by our testers include: users of services for mental health, physical disability, older people, children and families; carers; workers; union representatives; managers; the general public; local and natio]]> If you are considering taking your studies further you might like to consider using bibliographic software. Bibliographic software can be used to sort references, annotate them, manage quotations or create reading lists.

  There are several software packages on the market. Some are listed below.

  • BibTeX

  • En]]> If you are considering taking your studies further you might like to consider using bibliographic software. Bibliographic software can be used to sort references, annotate them, manage quotations or create reading lists.

    There are several software packages on the market. Some are listed below.

    • BibTeX

    • En]]> The founder ofTechnorati  claims that the number of ‘blogs’ doubles every five months and that the creation rate is approaching two per second. One estimate I read in July 2010 put the number at 400 million ‘blogs’. Because these online diaries offer instant publishing opportunities, you potentially have access to a wealth of knowledge from commentators and experts (if they blog) in a wi]]> The founder ofTechnorati  claims that the number of ‘blogs’ doubles every five months and that the creation rate is approaching two per second. One estimate I read in July 2010 put the number at 400 million ‘blogs’. Because these online diaries offer instant publishing opportunities, you potentially have access to a wealth of knowledge from commentators and experts (if they blog) in a wi]]> RSS (‘Really Simple Syndication’ or ‘Rich Site Summary’) newsfeeds supply headlines, links, and article summaries from various websites. By using RSS ‘feedreader’ software you can gather together a range of feeds and read them in one place: they come to you, rather than you having to go out and look for breaking news. The range of RSS feeds on offer is growing daily. There is probably a feed to cover all aspects of your life where you might need the latest information, and you may]]> RSS (‘Really Simple Syndication’ or ‘Rich Site Summary’) newsfeeds supply headlines, links, and article summaries from various websites. By using RSS ‘feedreader’ software you can gather together a range of feeds and read them in one place: they come to you, rather than you having to go out and look for breaking news. The range of RSS feeds on offer is growing daily. There is probably a feed to cover all aspects of your life where you might need the latest information, and you may]]>

      Hören Sie sich Teil 2 des Hörberichts an und machen Sie sich auf Englisch zu den folgenden Punkten Notizen:

      • dyke-building over the centuries;

      • heathen customs;

      • the flood of]]>

        Hören Sie sich Teil 2 des Hörberichts an und machen Sie sich auf Englisch zu den folgenden Punkten Notizen:

        • dyke-building over the centuries;

        • heathen customs;

        • the flood of]]>

          Actividad 11

          En esta actividad va a estudiar más a fondo el arte conceptual.

          1. Si usted sabe mucho sobre arte, haga el siguiente test, y luego compruebe sus respuestas leyendo el texto . Si prefier]]>

             Actividad 11

             En esta actividad va a estudiar más a fondo el arte conceptual.

             1. Si usted sabe mucho sobre arte, haga el siguiente test, y luego compruebe sus respuestas leyendo el texto . Si prefier]]>