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the negative imperative can be formed one of 4 ways:
a) With ne (nemo, nihil, numquam) + perfect subjunctive, when indicating a harsh command. eg: Ne timueris...
Resting membrane potential of a neuron is maintained by active transport of sodium (Na+) out of the cell and potassium (K+) into the cell through the Na+/K+ pump. Due to the negative charge of Cl- and som...
The rate of photosynthesis is affected by:
Light intensity - without enough light, cells cannot photosynthesize even if there is an excess of carbon dioxide and water
Ca...
Mg2+ is the smaller ion. (1 mark) Mg2+ has a larger nuclear charge than Na+ and has the same number of electrons. (1 mark)
Further explaination: Magnesium is further along the period than sodium is...
6a + b = 16 (1)
5a - 2b = 19 (2)
(1) x 2: 12a + 2b =32
(1) + (2): 12a + 2b + 5a - 2b = 32 + 19 = 51
17a = 51
a = 51 / 17 = 3
Substitue a = 3 back into (1): (6 x 3...
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