Answer:
Which of the following mechanisms is used by gram-negative bacteria to cross the blood-brain barrier? D) Inducing TNF
Explanation:
The blood brain barrier is a barrier formed by brain microvascular endothelial cells, astrocytes and pericytes. Pathogens can cross this barrier by using different mechanisms. The Tumor Necrosis Factor (TNF) is the way gram-negative bacteria cross this mentioned blood-brain barrier.
A newly synthesized protein destined for secretion from a eukaryotic cell will generally Rough ER - Golgi- transport vesicle - plasma membrane.
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What is eukaryotic cell?</h3>
- Eukaryotes are organisms having cells that contain a nuclear envelope around their nucleus.
- They are a member of the Eukaryote class of organisms.
- One of the three domains of life is the eukaryotic domain.
- The other two are the bacterial and archaeal domains.
- Organisms called eukaryotes have nuclei and membrane-bound organelles in their cells.
- Eukaryotic creatures come in a great variety, including most algae, all animals, plants, fungus, and protists.
- Eukaryotes are multicellular or unicellular organisms.
- The primary distinction between these two categories of organisms is that eukaryotic cells have a membrane-bound nucleus while prokaryotic cells have not.
- The nuclei of eukaryotes house their genetic material.
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The concentration and size of boxes the same at all locations is not the same size. The deaths due to cholera vary depending upon the location. The relative sizes represents that died at that certain spot.
Explanation:
The black boxes represent relative numbers of death due to cholera. Cholera is referred to as a disease of poverty because of the lack of social development in the areas in which it occurs. Crowded camps are fertile ground for a cholera outbreak. Other humanitarian crises including flooding and earthquakes, civil unrest or war that causes disruption of water and sanitation systems.
Homologous structures are common structures in different species that perform different functions and may have look similar in structure.
Example- The different animals have bones that appear very similar in form and function and seem to be related.
