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dybincka [34]
1 year ago
5

The rapid depolarization phase of the action potentials of myocardial contractile cells is due to which ion(s)? The rapid depola

rization phase of the action potentials of myocardial contractile cells is due to which ion(s)? Na+ only Ca2+ only K+ only both Ca2+ and K+ both Na+ and K+
Biology
1 answer:
fgiga [73]1 year ago
5 0

Answer:

Na+ only

Explanation:

Depolarisation of membrane refers to the change in the resting membrane potential of the membrane of a cell which is usually -70mv to a more positive value.

This value changes when the positive ions move inside the cell which increases the positive charge inside the cell.

In the myocardial cell, the sodium ions move inside the cell which changes the potential towards the more positive side as a result of which the signals for contraction arises.

Thus, Na+ only is correct.

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Explanation:

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1 year ago
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This image shows the various forces acting on a block of rock situated on a rock slope. What does arrow 4 represent?
AlladinOne [14]

Answer:

4 is gravitational force

Option B

Explanation:

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1 year ago
Griffith's experiments with S. pneumoniae were significant because they showed that traits could be transferred from one organis
Sladkaya [172]

Answer:

d.The transferred traits were heritable.

Explanation:

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7 0
1 year ago
A trait has two alleles, which are represented by p and q. If p = 0.44, what is q?
mario62 [17]
Alleles are also like genes which contain a trait from the parent cells that could be likely passed on to the offspring cells. For example, the trait of having blue eyes of the father and brown eyes of the mother are two alleles. There are probability for these alleles to pass on. 'p' designated the success of one allele to pass on, while 'q' designates a failure. When these two are added up, the sum would be 1. Therefore:

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5 0
2 years ago
During dehydration synthesis is 42 water molecules were made how many monosaccharides were joined together to make the complex c
netineya [11]

Answer:

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Explanation:

The complex carbohydrates are synthesized by the joining of monosaccharide residues by glycosidic linkages.One glycosidic linkage joins two monosaccharide residues by the elimination of one molecule of water.

  In other words it can be said that elimination of one water molecule joins two monosaccharides.By the same way elimination of 42 molecules of water will result in the joining of 43 monosaccaride residues.

3 0
1 year ago
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