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AfilCa [17]
2 years ago
3

Which type of muscle has muscle cells that connect to one another at junctions called intercalated disks?

Biology
1 answer:
Molodets [167]2 years ago
5 0

Answer:

Cardiac muscles have intercalated disc that connects one cardiac muscle fibre to other.

Explanation:

Intercalated discs are a characteristic feature of cardiac muscles. These structures connect one cardiac fiber to others. Intercalated discs have desmosomes and gap junctions.

The function of desmosomes of the intercalated disc is to hold the cardiac muscle fibers together while gap junctions serve to facilitate the rapid conduction of electrical signals.

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A friend tells you that he recently read an article claiming that you need to work to restore the alkalinity of your blood to re
statuscvo [17]

Answer:

d. The normal pH of human blood is already in the alkaline range.

Explanation:

The blood has an average pH between 7.35 and 7.45. Also, in blood there are some natural buffers that allows to maintain this pH does not matter the kind of food or substances that enter to our body.

If for any process the pH decreases a little bit, the body starts a process to recover the natural pH of the blood.

5 0
2 years ago
many different types of mutations can occur within the body .cystic fibrosis is a genetic disorder that is caused by different m
denpristay [2]
<h3>Question from alternative source</h3>

Many different types of mutations can occur within the body. Cystic fibrosis is a genetic disorder that is caused by different mutations within the CFTR gene. One mutation in the CFTR gene that leads to cystic fibrosis causes translation to end earlier in the gene sequence. Which type of mutation causes this translation error that leads to cystic fibrosis?

  • silent
  • missense
  • nonsense
  • deletion

Answer:

Nonsense

Explanation:

Nonsense mutations describe mutations that produce a premature stop codon. The stop codons are UAG, UAA, and UGA. A way in which this could arise is, for example, if there was a substution of a nucleotide in the mRNA codon UAC (which codes for the amino acid Tyrosine) to the nucleotide UAG (which codes for a stop codon).

The translation machinery would reach this codon, which signals that translation should be terminated. This would mean that the mRNA would be released, and a truncated (shortened) version of the amino acid would be produced. This is likely to be non-functional, and may even be marked for destruction by the cell.

8 0
2 years ago
A human RBC is approximately 6 µm in diameter. An unknown bacterium measures 1 ocular space using the oil immersion objective co
butalik [34]

Answer:

The following is the formula to determine the size from minor spaces and ocular spaces on the stage micrometer:  

Size = Number of minor spaces * 10 micrometer / Number of ocular spaces

A = Number of minor spaces is 2 and the number of ocular space is 1,

Size = 2 * 10 / 1 = 20 micro micrometer. Thus, the size of a bacterium is 20 micrometers.  

B = Thus, it can be said that the size of the bacterium is almost 4 times bigger in comparison to a human red blood cell, which is 6 micrometers in diameter.  

5 0
2 years ago
The phosphorus in all biological tissues can be traced back to ________.
bezimeni [28]

Answer:

The phosphorus in all biological tissues can be traced back to phosphorus weathered from rock.

4 0
2 years ago
You hang a swing from a live tree branch that is roughly parallel to the ground. What will likely happen over time as the tree g
Bingel [31]

Complete question:

You hang a swing from a live tree branch that is roughly parallel to the ground. What will likely happen over time as the tree grows? Check All That Apply

  1. The swing will move farther away from the tree trunk.
  2. The swing will move up. away from the ground.
  3. The swing will remain in its original position.
  4. The swing's ropes will become embedded in the branch.

Answer:

The swing's ropes will become embedded in the branch.

Explanation:

The trunk or branch strangulation sadly occurs very often. When people tie a young tree with different materials, such as a rope, or a cable, or a wire, and leave it there, the leash will eventually strangulate the tree.

Strangulation occurs because the tree keeps growing, applying pressure on the leash. The vascular system is in the trunk perimeter under the crust. Through the years, the pressure increases, the trunk is even more strangulated, and the vascular system is affected. One of the first and principal effects of strangulation is the increase in the trunk or branch diameter over the leash. This diameter change is because elements of the sap can not go back to the roots and keep near the strangulation. At this point, there are two options:

  • The tree can sort this by including the leash in its tissues, surrounding and absorbing it, and keep growing normally

or

  • The vascular system is so affected that the tree can not sort this problem and so, those parts of the tree located over the leash dye.

<em>In the exposed example, it seems that the tree could make it and included the swing's ropes in the branch. </em>

6 0
2 years ago
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