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Stella [2.4K]
2 years ago
9

What chemical ion is responsible for initiating the contraction of a muscle fiber?

Biology
1 answer:
Semenov [28]2 years ago
4 0
Calcium ion is responsible for Muscle Contractions.
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A rock can be highly permeable but also non-porous. <br> True <br> False
vekshin1
<h3><u>Answer;</u></h3>

The above statement is <u>false</u>

<h3><u>Explanation</u>;</h3>
  • Rocks have different porosity and permeability characteristics, which means that water does not move around the same way in all rocks below ground.
  • Permeability greater than 250 mD are considered very good, while permeability less than 1 mD are considered poor.
  • Low porosity normally results in low permeability, but high porosity does not necessarily imply high permeability. It is possible to have a highly porous rock with little or no interconnections between pores.
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3 years ago
What unit of measurement is used to measure temperature in the metric system?
Dahasolnce [82]

Answer:

The metric system measures mass in grams or kilograms, distance in meters or kilometers, and volume in liters. It measures temperature in Kelvin or Celsius degrees instead of the Fahrenheit degrees used in the imperial system. The Basic Unit for Mass The metric system measures mass in grams.

3 0
3 years ago
In what phase of mitosis do the centrioles separate?
Olegator [25]

Answer:

Prophase

Explanation:

During prophase, chromatin condenses into chromosomes, and the nuclear envelope, or membrane, breaks down. In animal cells, the centrioles near the nucleus begin to separate and move to opposite poles (sides) of the cell.

4 0
2 years ago
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A portion of a field has drained more rapidly than the rest, leading to drought conditions in that area several days before the
Andrew [12]

Answer:

Due to sloppy nature of the field.

Explanation:

This problem of rapidly drainage can be solved if the field should leveled because the portion is rapidly drained due to sloppy nature of the field. Sloppy nature of land moves water at the faster rate from higher elevation to lower elevation. We can see in tillage practices, the farmers used levelers in order to level the field in order to provide even resources such as fertilizers and water. So we can say that this problem can be solved if the field will be leveled.

3 0
2 years ago
The organ of hearing, where sensitive cells respond to auditory stimuli and produce neural impulses, is known as the
Lisa [10]
The organ that responds to stimuli with vibrations is the eardrum.
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