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...of each base to a single capital letter, so that A=adenine, G=guanine, C=cytosine and T=thymine, as shown in Figure 4. [Figure 3] Figure 3 A nucleotide composed of phosphate, a sugar molecule and a base. [Figure 4] Figure 4 A short segment of a single, straightened strand of DNA, in which the bases, adenine, guanine, cytosine and thymine, are denoted simply as A, G, C, and T, respectively. The sugar—......

...t equals two times x full stop Equation label: formula (1) For example, this formula tells you that at the point with x -coordinate 1, gradient equation sequence part 1 equals part 2 two multiplication one equals part 3 two comma as we found earlier. In the next activity you’re asked to use formula (1) to find the gradient of the graph of y equals x squared at two more...

...t sub one , cap t sub two and proton density; these will be explained later. RADIOGRAPHER: It does make a very loud drilling noise, okay? So what we’re going to do is pop these earphones ... NARRATOR: To obtain images, the patient is placed in a large, static magnetic field produced by a superconducting magnet. This powerful field, typically one and a half teslas in...

...T lymphocytes recognise and destroy infected cells of the body (similar to the NK cells). When a cell becomes infected, the virus hijacks the protein-synthesis machinery of the cell in order to make its own proteins. All cells within the body continually sample the proteins they are producing and place fragments of them on the cell surface for review by passing T...