If you're talking about eukaryotic cells then it's the cell wall. If it's a prokaryotic cell sometimes the slime layer secreted by some bacteria may harden and form a capsule around the bacterial cell.
Hope i helped!
Answer:
there is a link
Explanation:
glycolysis produces pyruvate which feeds into the krebs cycle
krebs cycle also generates redox agents(NADH and FADH2) needed in the etc
I've checked all the options and I think that the right answer looks like this: Mollusks have highly developed olfactory receptors.
For some reason I can’t see the picture
The genome is often compared to a set of blueprints.
