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Andrei [34K]
3 years ago
8

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

Biology
1 answer:
Lyrx [107]3 years ago
5 0

The rapid depolarization phase of myocardial contractile cells is due to the Na+ ions. Sodium ions are essential for regulation of blood and body fluids, communication of nerve impulses, heart activity, and metabolic purposes. Physiologically, it survives as an ion in the body. Sodium is needed by animals but is not needed by plants. The human prerequisite for sodium<span> must be less than 500 mg per day. </span>

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After differentiation, the various types of cells become specialized for a specific function. Their ______ relates to this _____
kykrilka [37]

Explanation:

The structure relates to their function

Their structural components (i.e. their makeup) determine their function (what they do). In specific cell types, collected proteins may function as a unit called an organelle.

Further Explanation:

In all eukaryotic cells mitochondria are small cellular organelles bound by double membranes make most of the chemical energy required for powering the biochemical reactions within the cell. this chemical energy is stored within the molecule ATP which is produced.

Some organelles are bound by membranes like those that make up the external structure of the cell, with varying compositions of phospholipids and proteins. These are advantageous, as they

  • may increase metabolic reaction efficiency;
  • they allow cells to concentrate smaller fractions of enzymes and solutes separate proteins and molecules that may harm the cells by parceling them into membrane-bound organelles
  • for example, hydrolytic enzymes concentrated within vacuoles may degrade macromolecules like DNA and RNA within the cytoplasm.

Learn more about cellular life at brainly.com/question/11259903

Learn more about mitochondria at brainly.com/question/8427362

Learn more about mitochondria and similar structures at brainly.com/question/2855039

#LearnWithBrainly

3 0
3 years ago
Complete each sentence regarding the bones of the lower extremity. Then place the sentences in order, based on the bones, from p
tatuchka [14]

i. There are 2 bones in the lower leg. The fibula is more lateral and the tibia is more medial.

ii. There are 5 small, long bones present in the top of the foot that are metatarsals.

iii. There are 7 irregular-shaped bones in the foot known as the tarsals.

iv. The patella is also called a knee cap.

v. There are 14 small bones of the toes that are called the phalanges.

vi. The femur is present in the thigh.

4 0
3 years ago
Which of the following correctly describes the disruption of an ecosystem service by an anthropogenic activity?
ehidna [41]

Answer:

The correct answer is "Provisioning services are disrupted by increased combustion of fossil fuels, which leads to an increase in air pollution".

Explanation:

The ecosystem provides several services that if used with responsibility, could be sustained by the nature. Unfortunately, disruption of an ecosystem service could happen by an anthropogenic activity, which are the activities that humans perform. One example is the disruption of provisioning services by increased combustion of fossil fuels, which leads to an increase in air pollution. The ecosystem provides clean air that gives oxygen for people and animals to breath, however high combustion of fossil fuels could disrupt this service.

8 0
3 years ago
When crude oil is distilled, it is separated into categories. What are those categories characterized by?
goldfiish [28.3K]

Answer:

Differences in their boiling points

Explanation:

When crude oil is distilled and separated into categories, the categories are characterized by the differences in their boiling points.

At different boiling points, each of the fraction will separate out.

  • Crude oil is made up of different fractions of hydrocarbons.
  • As the chain length of the hydrocarbon increases, the volatility reduces and boiling point increases.
  • Components with short carbon lengths rises out from the column first and are cooled and extracted.
  • The categories are thereby, classified based on differences in their boiling points.
6 0
3 years ago
What is the difference between eukaryote and prokaryote
Ratling [72]

Answer:

Prokaryotes are organisms that consist of a single prokaryotic cell. Eukaryotic cells are found in plants, animals, fungi, and protists. They range from 10–100 μm in diameter, and their DNA is contained within a membrane-bound nucleus. Eukaryotes are organisms containing eukaryotic cells.

Explanation:

8 0
3 years ago
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