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lara [203]
3 years ago
9

Which kind of electrical charge is found on the oxygen atom of a polar water molecule

Biology
2 answers:
Oliga [24]3 years ago
5 0
A negative charge that exists because of a covalent bond with hydrogen.
DedPeter [7]3 years ago
4 0

Answer:

A.

Explanation:

Apex answer is A negative charge that exists because of a covalent bond with hydrogen.  

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Explain why there is a difference in the amount of oxygen taken in at rest and during the vigorous activity. ​
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Answer: During vigorous exercise your breathing rate increases in order to intake more oxygen

Explanation:  during vigorous exercise / activity the body needs more oxygen in order to produce energy so your breathing rate increases in order to reach the demand of more intake of oxygen , and your muscles work harder due to an increase in oxygen demand and how much oxygen the muscles take from the blood during vigorous exercises , BUT during rest we have normal rate of oxygen intake because your body is at rest at that moment .

HOPE THIS HELPS!!!!!!!!!!!!!!!!!!!!!!!!!

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The structure of the cell membrane allows it to be selectively permeable. What is the name for the larger, brown structure in th
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Explanation:

B) protein channel

Lipids are composed of fatty acids which form the hydrobic tail and glycerol which forms the hydrophilic head; glycerol is a 3-Carbon alcohol which is water soluble, while the fatty acid tail is a long chain hydrocarbon (hydrogens attached to a carbon backone) with up to 36 carbons.

Their polarity or arrangement can give these non-polar macromolecules hydrophilic and hydrophobic properties. Via <em>diffusion,</em> small water molecules can move across the phospholipid bilayer acts as a semi-permeable membrane into the extracellular fluid or the cytoplasm which are both hydrophilic and contain large concentrations of polar water molecules or other water-soluble compounds. The hydrophilic heads of the bilayer are attracted to water while their water-repellent hydrophobic tails face towards each other- allowing molecules of water to diffuse across the membrane along the concentration gradient.

Transmembrane proteins are embedded within the membrane from the extracellular fluid to the cytoplasm, and are sometimes attached to glycoproteins (proteins attached to carbohydrates) which function as cell surface markers. Carrier proteins and channel proteins are the two major classes of membrane transport proteins.

  • Carrier proteins (also called carriers, permeases, or transporters) bind the specific solute to be transported and undergo a series of conformational changes to transfer the bound solute across the membrane. Transport proteins spanning the plasma membrane facilitate the movement of ions and other complex, polar molecules  which are typically prevented from moving across the membrane.
  • Channel proteins which are pores filled with water versus enabling charged molecules to diffuse across the membrane,  from regions of high concentration to regions of lower concentration. This is a passive part of facilitated diffusion

Learn more about membrane components at brainly.com/question/1971706

Learn more about plasma membrane transport at brainly.com/question/11410881

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3 years ago
________ is the number of different species represented in an ecological community, landscape or region. _______ is simply a cou
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Answer:

species richness,

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species richness_______ is the number of different species represented in an ecological community, landscape or region. _species richness, ______ is simply a count of species, and it does not take into account the abundances of the species or their relative abundance distributions.

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3 years ago
How do I get rid of my Self harm scars??
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If you go to a local store, and get scar cream, like stretch mark cream, that would help a lot.

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Hope this helped! :)

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