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Amiraneli [1.4K]
3 years ago
8

What phylum has spiny or leathery skin radial symmetry

Biology
1 answer:
ivann1987 [24]3 years ago
4 0
Phylum Echinodermata
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A salmon eating shrimp i think

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Everglades National park has a very large population of white tailed-deer.wich of these changes within this habitat is MOST LIKE
natka813 [3]
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8 0
2 years ago
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Verdich [7]

Answer:

B)  The mass of the reactants equals the mass of the products,

Explanation:

Given that the reaction is balanced, the mass of the reactants must equal to the mass of the products.

We know this by virtue of the law of conservation of mass.

 The law of conservation of mass states that "in a chemical reaction, matter is neither created nor destroyed but atoms are rearranged".

 Therefore, if the reaction is chemically balanced, the mass of reactants must be the same as the mass of the products in the reaction.

The second choice is the right one.

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3 years ago
The 20 amino acids vary only in their _____
Radda [10]
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3 0
3 years ago
In an analysis of the nucleotide composition of DNA, which of the following proportions will be found?
katrin [286]

Answer:

With respect to the composition of DNA, in an analysis it can be found that the proportions of nucleotides are A + C = G + T (option a).

Explanation:

The proportion of nucleotides in a DNA molecule can be established according to the sequence of these nucleotides on both complementary strands, since the purinic bases of one strand are complemented by the pyrimidinic bases of another:

  • <em>Adenine is complemented with Thymine A=T</em>
  • <em>Guanine is complemented with Cytosine G=C</em>

From this we can deduce that in a DNA molecule with two chains there will be the same amount of adenine and thymine, as well as the same number of guanine with respect to cytosine, so:

<em>     A + C = G + T</em>

An example of this would be a known DNA molecule (hypothetical), with 5 molecules of Adenine and 7 molecules of Guanine. In this case there are 5 Thymines, complementary with Adenine, and 7 Cytosines like Guanine:

<em>     A + C = G + T</em>

<em>     5 + 7 = 7 + 5</em>

6 0
2 years ago
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