A. It’s the thing you change and you’ll measure the E. coli growth
Answer:
it's just my guess, but I think it's b.
Explanation:
but im not sure yet
Sorry, I don’t know what the question is! You need to attach a photo or type it out next time!
Answer:
cellular membranes
Explanation:
Cellular membranes are selectively permeable because they allow only certain molecules to cross into and out of the cell. The phospholipid bilayer is a selectively permeable membrane that surrounds all biological cells. The movement of molecules across the cell membrane bilayer can occur by passive transport (does not require energy) or active transport (requires energy). For example, water molecules pass passively through the cell membrane (passive transport), while other molecules pass through transmembrane proteins against a concentration gradient (active transport).
<span> <span>Track: an impression made by a single foot.
Trackway: a number of tracks made during a single trip.
Trail: an impression made by an animal without legs.
Burrows: a hole or holes an animal dug into loose sediment (like mud).
Borings: a hole or holes an animal dug into a hard substrate (like wood or rock).
Eggs and Nests: shells that at one time would have contained babies and the nests that the babies would have been kept in.
Coprolites: poop that has become fossilized </span></span>
