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Gekata [30.6K]
3 years ago
8

The final fate of electrons in the electron transport chain is combining with _____ to form _____. hydrogen, ATP carbon, carbon

dioxide oxygen, water None of these
Biology
1 answer:
baherus [9]3 years ago
8 0

Answer:

The correct answer will be option

1. Oxygen

2. water.

Explanation:

Electron transport chain is the final step of the aerobic respiration which takes place in the inner mitochondrial membrane.

This chain helps in the formation of the ATP molecules as it is embedded with the ATP synthase.

The aerobic respiration is called the aerobic respiration as it uses the oxygen only in the final step of the ETS where oxygen combines with the free hydrogen ions to form metabolic water.

Thus, oxygen and water are the correct options.

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Explain how ATP can be compared to a rechargeable battery.
NeX [460]

Explanation:

when it's fully charged it's a ATP and when it's runs down it's ADP

and there are times when the cells need more energy and splits off another phosphate so it goes from ADP adenoside di-phosphate, to AMP, adenosine mono-phosphate  

and there you have it

6 0
3 years ago
increasing intracellular cAMP leads to smooth muscle relaxation by: Group of answer choices inhibiting IP3 channels, leading to
kirza4 [7]

Answer:

1. Inhibiting IP3 channels, leading to decreased Ca2 in the sarcoplasm and reduced contraction.  

2. Increasing the relative activity of MLCP, leading to a decrease in tension.

3. Activating K channels, increasing K leaking out of the cell which hyperpolarizes it and decreases the likelihood of Ca2 entry.

Explanation

In smooth muscle, cyclic AMP (cAMP) mediates relaxation because cAMP inhibits a specific kinase required for myosin light chain protein (MLCP) phosphorylation, thereby triggering contraction in the smooth muscles. It has been shown that cAMP inhibits 1,4,5-trisphosphate (IP3)-dependent calcium ions (Ca 2+) release by activation of the cGMP-dependent protein kinase (PKG). PKG proteins act to modulate Ca2+ oscillations by stimulating sarcoplasmic Ca2+-ATPase membrane proteins, increasing Ca2+ in the sarcoplasmic reticulum stores and Ca2+ efflux from the cells, and activate voltage-gated potassium (K) channels, thereby leading to membrane hyperpolarization and reducing Ca2+ entry through Ca2+ channels.

6 0
2 years ago
When electrons are removed from a food molecule, it is
sweet [91]

Answer:

Oxidized

Explanation:

5 0
3 years ago
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
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