The function of the plasma membrane is B. It helps filter waste inside the cell.
<h3>What is the plasma membrane?</h3>
The plasma membrane is responsible for <em>separating the environment between the inside and outside of the cell</em>. It is composed of a lipid bilayer that is <em>semi-permeable</em>, which gives it this regulatory characteristic on the transport of substances inside and outside the cell.
What it is going to do is protect the cell from what may be outside the cellular environment, so this cell has a <em>stable environment</em> in which it can perform its function correctly.
The membrane, apart from its lipid structure, will also have proteins that will allow it to interact with other cells and also glycoprotein portions that give it another layer of protection, which is what we call glycocalyx.
Therefore, we can confirm that the function of the plasma membrane is B. It helps filter waste inside the cell.
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Answer:
Erythrocytes are not considered true cells, because of their lack of a nucleus. The effect of having no nucleus makes their self-reproduction impossible, and the absence of mitochondria is a disadvantage because they have to obtain energy by alternative reactions.
Explanation:
Erythrocytes, or red blood cells, are the structure in charge of transporting gases in the blood. When these cells are mature, they have already lost their nucleus —in order to have space to house the hemoglobin molecule— which prevents mature red blood cells from being able to reproduce.
Additionally, red blood cells do not have mitochondria —the main energy generator in eukaryotic cells— so in order to obtain energy they need to perform lactic fermentation, with a lower enegetic yield, which may be a disadvantage, but sufficient for this structure to perform its function.
The air-filled spaces lined by mucous membranes found within flat and irregular bones in the body are called the sinuses.
<h3>What are bones?</h3>
The bones are the solid structures that we find in the body. The bones of a person are about two hundred and six in number. The primary function of the bones is to support the structure of the of the individual and to protect the vital and fragile structures such as the brain and the heart.
The air-filled spaces lined by mucous membranes found within flat and irregular bones in the body are called the sinuses.
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Answer:
The endosymbiotic theory states that chloroplast originated from A Cyanobacteria entering and remaining in the cytoplasm of another cell.
Explanation:
Endosymbiotic theory in an important theory of evolution which states that Eukaryotic cells are originated from prokaryotic organism.
The theory deals with the fact that chloroplast and mitocondria were free living prokaryotic organism at Past. The similarities between prokaryotic cell and these Eukaryotic organelles(Mitocondria,Chloroplast) and the evolution of mitocondria and chloroplast from the prokaryotic cells is best exlained by the theory of endosymbiosis.
Mitocondria evolved from the Endocytosis of aerobic bacteria,whereas Choroplast are originated from photosynthetic bacteria such as cyanobacteria.