G - a protein channel (pore) Distance H-I is typically about 7 nm (say about 10 nm) The membrane is made up of two principle components: phospholipids, shown in green, and proteins, shown in. brown. Many phospholipids make up the cell membrane, each green sphere with its two 'tails' is one phospholipid. The thickness of the membrane is 7-8 nanometres thick (that is 7 to 8 millionths of a millimetre).
There are 190 calories in a 1 wrap serving of McDonald's Grilled Chicken Snack Wrap (No Sauce). Calorie breakdown: 39% fat, 22% carbs, 39% protein.
Snack Wrap Lover: Dear Snack Wrap Lover, I get lots of mail about those Snack Wraps. Apparently people LOVE 'em. For starters, make sure you order yours with the grilled chicken, not the crispy chicken. Ordered as is, each grilled chicken Snack Wrap has 260 - 270 calories and 8 - 10g fat (the crispy chicken ones each have 320 - 330 calories and 14 - 16g fat). Ordering them without the sauce, like you do, isn't a bad idea, but you'll only save 15 - 25 calories, which isn't a tremendous amount.