The cells are not able to stop the flow of the mentioned harmful substances into the cell as they fail to recognize them as foreign entities. These foreign toxins have intracellular targets with which they bind and lead to death of the cell.
The plasma membrane is formed of lipids. The toxins produced by the bacterial cells are water soluble. Therefore, they identify particular receptors on the membrane and associate with them. Thus, cell at certain occasions fail to identify them as foreign entities.
They combine with the plasma membrane of the cell and induce pore formation, however, there are many toxins that invade the cell and possess intracellular targets via endocytic vesicles. With the help of these vesicles, they deliver their enzymatic domain into the cytosol and results in the death of the cell by obstructing the metabolism of the cell.
Thus, cells fail to identify the bacterial toxins as foreign entities and they invade the cell and results in cell death.
Find out more information about invasion of foreign toxins here:
Answer:
There are specific receptors present on the surface of the normal cell membrane to recognize the molecules to allow them to pass or not. Most of the bacterial toxin are water-soluble molecules, and bound to the cell surface and interact with them as some time antibody-antigen interaction or cell recognition does not occur that form a pore in the cell membrane and toxins move into the cell.
Once toxins enter the cell they attack intracellular targets through endocytic vesicles. Ultimately these ends in cell death.
b. unity and diversity
c. regulation
d. levels of organization​
Answer:
d
Explanation:
The situation described in the question is an illustration of the 'levels of organization' theme in biology, which elucidates how smaller units combine to create more complex structures like tissues, organs, organ systems, and ultimately, the whole organism.
The scenario presented in the question exemplifies the theme of 'levels of organization' in biology. This theme explains how simpler components combine and interact to form more complex structures. In the context of multicellular organisms, cells form the fundamental units, which combine to constitute tissues. Tissues further come together to form organs, and organs function together in organ systems to enable the entire organism to function properly.
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answer:
a balance and a graduated cylinder
Explanation
Density is mass per unit and it is property characteristic of a substance. The arrangement of the mass of atoms and their size is what determines the the density of a substance.
For a student to measure the density of seawater he/she is required to use a balance and a graduated cylinder where a balance will be used to measure the mass of the mineral sample and then a graduated cylinder to determine the volume.
Answer:
Fertilization
Explanation:
Answer:
Solitary social organization.
Explanation:
The most common animal that participates in this type of social organization is the orangutan, also some species of lemurs and tarsiers too.
In this organization, the females are in separate territories, and a male goes to these territories. This one has its territory, which also includes its females' space. It is a polygamous system with one male and various females.
They communicate through sounds and by smelling their partners, and they usually are awake during the night but asleep in trees during the day.
Answer is Communicable disease can be spread by inanimate objects, such as doorknobs.
The causal organisms of some of the communicable diseases are bacteria and viruses. The communicable diseases such as common cough and cold can be transmitted to a healthy person by indirect contact with contaminated substances such as food, air, soil, feces, equipment, objects including doorknobs, remote controller, etc.