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Iteru [2.4K]
3 years ago
7

Por que el transporte de oxigeno es más eficiente en los sistemas circulatorios cerrados?

Biology
1 answer:
Vlad1618 [11]3 years ago
5 0

Answer:

The closed circulatory system considerably enhances the speed, precision, and efficiency of the circulation. The blood flows far more rapidly and it takes less time to circulate through the closed system and return to the heart.

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2 Points
ale4655 [162]

Answer:

Your bloodstream.

Explanation:

The cells in your pancreas produce insulin which needs to be sent to the rest of your  body to tell your cells to take in glucose (sugar) for energy. In order to get sent out of  the pancreas' cells, the insulin needs to go through your bloodstream.

5 0
3 years ago
If a molecule of DNA has 30% Adenine how much of the other bases will be present?
anygoal [31]

Answer:

If a DNA molecule has 30% Adenine the percentage of the other bases is Thymine: 30% Cytosine: 20% Guanine: 20%.

Explanation:

When the percentage that a base has in a DNA molecule is given, the percentage of the other bases can be known using the Chargaff's base pair rule.

A DNA molecule has the information of the genome of a living being, according to a specific sequence of its nitrogenous bases adenine, guanine, cytosine and thymine.

Chargaff was able to establish that in a DNA molecule the ratio of purine : pyrimidine of 1:1, so there must be the same amount of thymine as adenine and a similar amount of guanine for the cytosine, taking into account the complementarity of bases.

Taking into account the law of the base pair, if in a DNA chain there is 30% of Adenine, in the molecule there is:

  • <em>Adenine 30%. </em>
  • <em>Thymine 30%. </em>
  • <em>Cytosine 20%. </em>
  • <em>Guanine 20%. </em>
  • <em>Total ..... 100% </em>

In this case, the <u>Chargaff rule is useful to determine the percentage of nitrogenous bases that exist in a DNA molecule, knowing the percentage of a single base</u>.

7 0
3 years ago
A doctor places drops in the eyes to dilate the pupils for an examination. The type of drug that is used is a(n) ________ drug.
sleet_krkn [62]
Steriodal//topical???

Sorry if i didn’t help :(
5 0
3 years ago
Scientists say that photosynthesis and cellular respiration are reciprocal processes. Why
ANTONII [103]

Cellular respiration and photosynthesis are essentially opposite processes. Photosynthesis is the process by which organisms make high-energy compounds -- the sugar glucose in particular -- through the chemical "reduction" of carbon dioxide (CO2). Cellular respiration, on the other hand, involves the breakdown of glucose and other compounds through chemical "oxidation." Photosynthesis consumes CO2 and produces oxygen. Cellular respiration consumes oxygen and produces CO2.

5 0
3 years ago
Read 2 more answers
Which are characteristics of all bacteria? Check all that apply. Please help me
emmasim [6.3K]

Answer: they are all prokaryotes

Explanation: because they all lack a nucleus to retain their DNA

7 0
3 years ago
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