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grin007 [14]
3 years ago
6

Useful materials

Biology
1 answer:
stiv31 [10]3 years ago
3 0

Answer:

Explanation:

The materials that are useful are bamboo, plastic, steel, concrete, fabric , textiles, stones, brick, repurposed wood e.t.c.

Materials become useful, when those that uses it use it right and to achieve a specific purposes base on the properties the materials poseses.

The materials that are harmful include asbestos, Mercury containing devices, lead based paints, household hazardous waste, light system, mold, refrigerant containing system.

Materials become harmful when they contain substances or properties that is dangerous or can harm human beings and cause damage to cells.

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Answer:A

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The osmotic pressure in the animal cell is higher than that in the fresh water.

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The water moves into the cell and then bursts.

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mentioned in book

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If a mutation occurred that increased the number of exons in a sequence of DNA, what impact would this have on the protein forme
erastovalidia [21]

Answer:

See the answer below

Explanation:

<em>An increase in the number of exons in a sequence of DNA would result in another protein with a longer amino acid sequence.</em>

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The longer the exons in a gene, the more the codons present in the corresponding mRNA from the gene, and the more the number of amino acids that would be translated from the mRNA. A longer amino acid chain would result in a different protein.

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