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ioda
3 years ago
5

Which one is better? natural , synthetic or both

Biology
1 answer:
Georgia [21]3 years ago
4 0

Answer:

Natural Is better

Explanation:

Natural Chemicals are produced by nature without any human intervention. Synthetic may or may not be found in nature

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i think it's D I hope this helps :)

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3 years ago
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The prolonged electrical depolarization of cardiac muscle cells that occurs during contraction is due primarily to the persisten
luda_lava [24]

Answer:

The prolonged electrical depolarization of cardiac muscle cells -that occurs during contraction- is due primarily to the persistent influx of calcium ion

Explanation:

The action potential of the heart muscle is longer with respect to skeletal muscle (around 300 milliseconds), and this is due to the activity of calcium (Ca⁺⁺ ) in the intracellular compartment.

The initial depolarization of cardiac muscle fiber depends on the entry of sodium (Na⁺) into the cell. However, for the action potential to occur and be maintained, Ca⁺⁺  must increase its cytoplasmic levels, which depends on:

  1. The increase in intracellular sodium induces the release of Ca⁺⁺ from the sarcoplasmic reticulum.
  2. Calcium entry from the extracellular space through the voltage dependent Ca⁺⁺ channels.
  3. The entry of extracellular Ca⁺⁺ causes the release of more Ca⁺⁺ ions by the sarcoplasmic reticulum, further increasing its intracellular concentration.

This is how the ion that guarantees the duration of the action potential of the cardiac muscle cell is the Ca⁺⁺.

Learn more:

Calcium, sodium and cardiac muscle cells brainly.com/question/4473795

4 0
3 years ago
Which cell normal produced as a direct result of meiosis
riadik2000 [5.3K]
Meiosis makes haploid gametes like eggs and sperm cells
4 0
3 years ago
25 points
Solnce55 [7]

Carbon is transfered by plants and animals.

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2 years ago
The crab Lynda tell Ella ya carries a pair of sea anemones on its claw. The crab uses the sea anemones stinging tentacles as pro
Marina86 [1]

Answer: Mutualism

Explanation: The relationship between the crab and the sea anemone describes mutualism, a type of symbiotic relationship.

Mutualism describes the ecological interaction between two or more species that benefits both; typically involving the exchange of substances or services between both.

It plays a key role in ecology and is thought to have driven the evolution of much of the diversity currently in existence today.

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2 years ago
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