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dezoksy [38]
3 years ago
12

Why does the air breathed in need to be warmed filtered and moistened?

Biology
1 answer:
WITCHER [35]3 years ago
8 0
The combination of cilia and mucous helps to filter out solid particles from the air an Warm and moisten the air, which prevents damage to the delicate tissues that form the Respiratory System.
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Compare Hills and Plateau<br> I need this in a paragraph <br><br><br> Thank you!
Aloiza [94]

Hills go up and back down again. Plateaus go up and stay at a maximum level. For example, If you were measuring the elevation of certain points on a hill, it would look something like (in units): (1, 2, 3, 4, 5, 6, 6, 5, 4, 3, 2, 1). If you were measuring the elevation of certain points on a plateau, it would look something like (in units): (1, 2, 3, 4, 5, 6, 6, 6, 6, 6, 6, 6, 6).

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3 years ago
The sense receptors for taste are _________, and these receptors are located on the _________.
Ksju [112]
The sence receptors for taste are taste receptors and these receptors are located in oral cavity!
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3 years ago
What are the benefits of stem cell research? Write about the main source of stem cells and the disease that can be treated by st
sveta [45]

Answer: Research with embryonic stem cells may lead to new, more effective treatments for serious human ailments and alleviate the suffering of thousands of people.

Explanation:

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3 years ago
What would happen to a bactrial cell if protective covering was destroyed ?
algol13
It would be harmed by chemicals in the environment. ... In binary fission, the two new cells that are formed are susceptible to the same antibiotic.
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3 years ago
DCCD (dicyclohexylcarbodiimide) inhibits oxidative phosphorylation when the substrate is mitochondrial NADH. DCCD is a drug that
VARVARA [1.3K]

Answer:

A) Decreases cellular energy production

B) DCCD also affects K+ transport

Explanation:

A) Consequences are of DCCD on cellular energy production: <em>Decreases cellular energy production</em>

ATP-synthase pump is composed of two subunits: F1 catalytic subunit that synthesizes ATP, and F0 proton pumping subunits, that transport H+ through the membrane. F1 subunit might act independently of F0 to produce ATP, but this molecule can not be released without H+ gradient, which generates a movement necessary for ATP release from the catalytic center.

When any of the parts composing F0 react with DCCD, the subunit can not transport H+ through the membrane. DCCD inhibits the enzyme activity by blocking the protons´ flow.

As DCCD blocks the protons´ flow, and the protons´ flow is necessary to release the ATP molecule from the F1 subunit, no other ADP + Pi can enter to F1 subunit, and the production of ATP stops.

B) Other cellular effects of DCCD

There seem to be other effects of DCCD on cell activity, some of which are still under study. To name a few:

  • Diimide from DCCD seems to stimulate cytochrome b reduction and inhibits its reoxidation by ferricyanide.
  • When exposing the cell to high concentrations of DCCD for a long time, might occur an alteration in the electron transporting chain
  • Inhibition of ubiquinol-cytochrome c reductase activity when exposing the cell to high concentrations of DCCD.
  • Inhibition of K+ transport, associated with the inhibition of H+ transport.

Concerning the effect of DCCD on the K+ transport, DCCD stops the extrusion of H+ and the consequent intrusion of K+.

DCCD strongly inhibits the simultaneous flow of H+ and K+. First, it inhibits H+ flow, acidification of the environment stops, but at this point, K+ keeps moving through the membrane. Once the H+ flow has ceased, the K+ flow slowly decreases until it finally stops moving. There is a lag time in the DCCD effect on K+ flow to the instantaneous effect on H+ flow.

5 0
3 years ago
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