Bacteria and other microbes can be used to " clean up" an oil spill by breaking down oil into carbon dioxide and water. two samples isolated from the deepwater horizon leak in the gulf of mexico were labeled a and b. the dna of each was isolated and the percent thymine measured in each sample. assume the organisms contain normal double-stranded dna and predict the composition of the other bases.
-sample a contains 21.1% thymine
%a
-sample b contains 27.1% thymine
%a
-number
%g
-number
%g
-number
%c
-number
%c
both samples are then denatured to remove the secondary structure. which will have the higher temperature to denature a or b ?

'which of these statements about the scientific method is not true? all experiments must follow the same number of steps in the procedure. experiments may be repeated several times. some unexpected results can be beneficial. experimental results may or may not support the hypothesis.

Use this dichotomous key for insect identification to identify the insect shown. 1. a. insect has one pair of wings. order diptera b. insect has two pairs of wings. go to #2 2. a. front wings thicker in texture than hind wings go to #3. b. front and hind wings are same texture throughout. go to #4 3. a. front wings are short order dermaptera b. front wings cover entire abdomen order coleoptera 4. a. wings with scale on all parts of their area. order lepidoptera b. wings without scales go to #5. 5. a. hind wings smaller than front wings. order ephemeroptera b. front and hind wings nearly equal in size. order odonata the insect pictured is in the order diptera. ephemeroptera. coleoptera. odonata.

Which set of terms best describes a community of miners who live out in the countryside of west virginia and use specialized geographical equipment to analyze the composition of rocks