Does this class of molecules mix well with water?
a. what is our scientific word for things that dissolve in water? (it literally means
"water loving" in greek.)
b. what is our scientific word for things that don’t dissolve in water? (it literally
means "water-fearing" in greek.)
c. based on what we know about the chemistry of biological membranes, which
of these two will be able to dissolve freely though the interior of a biological
membrane?

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.

You are working in the lab and are working with the same element but with varying isotopes of the element. you are working with c-11, c-13, c-14, and c-15. what is the average atomic mass of this element? (use periodic table) a- 12 b-15 c-14 d-13

2points what do bacteria have in common with the cells of other living organisms?