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DNA requires one template strand that is conserved, in order for the nitrogenous bases to order themselves correctly in the new polynucleotide chain. This relies on the complimentary base pairing C-G and ...

There are two possible answers here. 1) Add Tollens reagent - the student would see a silver mirror form in the test tube containing the aldehyde. 2) Add Benedicts reagent - te student would see a brick r...

Darwin made four key observations in his studies of wild populations: members of a population of the same species vary in their traits; traits can be inherited, or passed from parents to offspring; popula...

In order to solve this problem we must first complete the square. To complete the square we need to factorise the equation to get the coefficient of x to be 1. This gives: 2(x^2-3x)+5. We then need to com...

Here the best method to use will be elimination since using a substitution for x or y may produce some nasty fractions. The first thing to look for is that the 2x and 4x are nice multiples of each other. ...