Tutor profile: Ashley C.
Subject: Basic Math
What is the next step in finding the solution to the equation below? Show the equivalent equation. 8x - 5 = 6 - 2x
Collecting like terms. 8x + 2x = 6+5 10x = 11 10x/10 = 11/10 - Cancle out 10 to get x on it's own x= 1.1
Subject: Biomedical Science
The digestive system and the breathing system both contain specialized exchange surfaces. Explain how the villi and the alveoli are adapted to absorb molecules into the bloodstream.
Both have a large surface area, while villi have many microvilli and the alveolar walls are not flat / are folded. This is to maximise diffusion (of gases) / absorption of (food) molecules. Both have many capillaries / good blood supply / capillaries near the surface to maintain concentration / diffusion gradient. Both have thin walls / walls that are one cell thick / one cell thick surface to provide a short diffusion distance (for molecules to travel). Villi have many mitochondria to provide energy for active transport (of food molecules), while also the cells of the villi have microvilli / more projections o further increase the surface area / increase the number of proteins in the membrane / to allow more active transport to take place
Subject: Basic Chemistry
Write an equation to show how each of the molecules shown could be formed by a termination step in the reactions shown.
CH3-CH3 in CH4 -> CH3Cl, 2 * CH3 -> CH3-CH3
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