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solong [7]
2 years ago
11

Why does there need to be a concentration gradient across respiration surfaces?

Biology
1 answer:
Maslowich2 years ago
6 0

A concentration gradient across respiration surfaces is needed so that oxygen can diffuse in, and carbon dioxide can diffuse out; option A.

<h3>What is a concentration gradient?</h3>

A concentration gradient is a difference in the concentration of molecule of substances across two regions or across a barrier.

A concentration gradient is necessary for diffusion of molecules of substances from one region to another.

Across respiratory surfaces, a concentration gradient is required in order for the gases to diffusion across the membranes from regions of high concentration to regions of lower concentration.

In conclusion, a concentration gradient is required for effective gaseous exchange across respiratory surfaces.

Learn  more about concentration gradient at: brainly.com/question/19328396

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The majority of the plasma membrane can be described as a bilayer of with associated proteins.
tester [92]

According to the research, the correct option is phospholipids. The majority of the plasma membrane can be described as a bilayer of <u>phospholipids</u> with associated proteins.

<h3>What is the plasma membrane?</h3>

It is a double layer of phospholipids and proteins, which perform functions of connection, transport and catalysis, which covers and delimits the cells, serving as a border between the inside and the outside of it.

In this sense, one of the peculiarities of phospholipids is that they are amphipathic, their molecules have a part that is soluble in water (that is, hydrophilic) and another that is not (hydrophobic), these lipids are primarily cholesterol, phosphoglycerides and sphingolipids

Therefore, we can conclude that according to the research, the correct option is phospholipids. The majority of the plasma membrane can be described as a bilayer of <u>phospholipids</u> with associated proteins.

Learn more about plasma membrane here: brainly.com/question/14828752

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