The first layer is the cell wall.
And the second layer is the cell membrane.I think
Fermentation is anaerobic meaning that no oxygen is present. The vats are sealed to keep oxygen out
Hydrogen bonds is holding together the two strands of nucleic
<span>Covalent bonds hold the atoms and molecules together in each of the amino acid chains. Two complimentary chains are held together by hydrogen bonds to form a double-helix.</span>
ANSWER: Different cells have<span> different jobs to </span>do<span>. Each </span>cell has<span> a size and shape that is suited to its job. </span>Cells<span> that </span>do<span> the same job combine together to form body tissue, such as muscle, skin, or bone tissue. Groups of different </span>types of cells<span> make up the organs in your bodies, such as your heart, liver, or lungs.</span>