Answer: [B]: "proteins" .
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Enzymes are proteins and they control the speed of chemical reactions in your body. Without them, the reactions would happen too slowly to keep you alive.
Some break down larger molecules into smaller ones and those enzymes are in your stomach.
In general for everyone, these are the most likely group of people i've chosen mature; grandparents(grandma,granddad), parents (mom,dad), your teacher.
Each sieve tube element is normally associated with one or more nucleated companion cells, to which they are connected by plasnodesmata (channels between the cells). Each companion cell is derived from the same mother cell as its associated sieve tube member. Sieve tube members have no cell nucleus, ribosomes, or vacues. Thus, they depend on companion cells to provide proteins, ATP, and signalling molecules
DNA is an acid that contains resources needed for development and function of every living thing, EVERY LIVING THING. even bacteria and viruses have DNA. without DNA there would be no life.