162 search results
Introducing mammals
Nature & Environment

Introducing mammals

...DNA), which has a key role in directing the workings of the cell. Figure 17 (d) is a hugely magnified view of just one of the secretory cells shown in (c) – a single sample of the many millions of cells that comprise the mammary gland. Magnification on this scale requires the use of an electron microscope, as opposed to the less powerful optical light microscope used...
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Level 1: Introductory 5 hrs
Introducing Union Black
Education & Development

Introducing Union Black

...DNA. But, while people continue to perceive humanity as belonging to different races, a racial bias towards empathy can have detrimental effects on individuals, groups and relationships...Introducing Union Black: 1.1 Why talk about empathy? - Well, it is just one way of dismantling racism and starting to tackle unconscious and conscious bias. [The word ‘empathy’...
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Level 1: Introductory 3 hrs
Animals at the extremes: the desert environment
Nature & Environment

Animals at the extremes: the desert environment

...DNA sequences known as promoters; the latter determine where RNA polymerase binds, e.g. TATA (Figure 41), and starts transcription. Each gene has its own promoter. Nucleotide sequences in promoters tend to be highly conserved and are therefore the same in many species. [Figure 41] Figure 41 Control of mRNA synthesis during transcription of Hsp70. (a) RNA polymerase II...
View course Animals at the extremes: the desert environment
Level 2: Intermediate 14 hrs
Lord John Browne - Stories of Change
Nature & Environment

Lord John Browne - Stories of Change

...DNA, of, ‘Let’s go out there and find that stuff, wherever it is, we can get it. JB: Well, I think there is, of course, in the professional cadres of oil and gas companies, this great spirit of we can do things, we love chasing things, we love the excitement of drilling wells and finding something, or maybe nothing is the risk. It’s like all these areas of...
View audio Lord John Browne - Stories of Change
Audio 5 mins
Health and safety in the laboratory and field
Science, Maths & Technology

Health and safety in the laboratory and field

...DNA of the body's cells). These mutations can be passed along as the cell reproduces, sometimes leading to defective cells or cancer. Again there are three categories: categories 1 and 2 are toxic, e.g. iodomethane; category 3 is harmful, e.g. vanadium pentoxide. 7.1.4 Teratogenic chemicals These chemicals are toxic to reproduction. A teratogen is an agent that can cause...
View course Health and safety in the laboratory and field
Level 1: Introductory 1 hr
Working mathematically
Science, Maths & Technology

Working mathematically

...DNA), and electronics. As you work on the activity, make notes about how you work on it and the discoveries you make. Note down any predictions or conjectures you make and remember to record your findings. Also think about the processes you have used and how you might present the activity to someone else. Activity 12 Return of the Möbius band Make some more Möbius bands...
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Level 3: Advanced 10 hrs
Health and wellbeing in the ancient world
History & The Arts

Health and wellbeing in the ancient world

...DNA and stable isotopes). Using the example of the ‘Lant Street Teenager’, Dr Rebecca Redfern examines what the bones tell us about the origins and health of this fourth century CE girl. When was she born, and when did she come to London? How has her diet left traces on her bones? How healthy was she? HELEN KING So this is the Lant Street teenager. I’m so excited to...
View course Health and wellbeing in the ancient world
Level 1: Introductory 18 hrs
Galaxies, stars and planets
Science, Maths & Technology

Galaxies, stars and planets

...DNA) and a bacterial cell respectively. You will be familiar with the scales millimetres (mm) to megametres (Mm). The Sun is at the scale of a gigametre (Gm). Moving outwards are the inner Solar System (Tm), Oort cloud (Pm), a nebula (Em), galaxy (Zm) and cluster of galaxies (Ym). Most of these units will sound unfamiliar, not just because they refer to scales that we do...
View course Galaxies, stars and planets
Level 1: Introductory 8 hrs