drawing cell membranes
Last night Mack and I worked on three posters for him to use in today’s oral report on cell membrane structures and functions in City High. I don’t know what type of cells. Mack said more than once, “That’s the cholesterol,” and I saw a “glycoprotein” label, so I surmised that they’re cells of a type in animals. But I never asked Mack what we were drawing. I just helped.
Mack did research on the internet, using my computer, to learn all the functions and processes of the components of cell membranes, including glycoproteins, glycolipids and phospholipids.
Although I had given numerous colored markers, Mack had only brought two pencils, a pen, and a box of crayons from a sibling, .
I contributed two bullet-tip dry-erase markers, a white plastic eraser and a big, bullet-tip, black Bic marker. If I hadn’t bought that a couple of weeks ago, the drawings would have been so weak. While Mack drew the other poster, I drew this one (above and below).
I colored it with crayons, as that’s what was at hand at night …
Then I drew this poster while Mack was still on the Internet.
Then I colored it with crayons while Mack was still on the Internet.
This is the poster that Mack drew then colored.

