PLZ HELP DUE AT 12 MIDNIGHT. How can disease causing bacteria get inside a cell without damaging the cell membrane?

Bacteria are much larger than viruses, and they are too large to be taken up by receptor-mediated endocytosis. Instead, they enter host cells through phagocytosis. Phagocytosis of bacteria is a normal function of macrophages. They patrol the tissues of the body and ingest and destroy unwanted microbes. Some pathogens, however, have acquired the ability to survive and replicate within macrophages after they have been phagocytosed.

Explanation:

Tuberculosis, a serious lung infection that is widespread in some urban populations, is caused by one such pathogen, Mycobacterium tuberculosis. This bacterium is usually acquired by inhalation into the lungs, where it is phagocytosed by alveolar macrophages. Although the microbe can survive and replicate within macrophages, the macrophages of most healthy individuals, with the help of the adaptive immune system, contain the infection within a lesion called a tubercle. In most cases, the lesion becomes walled off within a fibrous capsule that undergoes calcification, after which it can easily be seen on an X-ray of the lungs of an infected person. An unusual feature of M. tuberculosis is its ability to survive for decades within macrophages contained in such lesions. Later in life, especially if the immune system becomes weakened by disease or drugs, the infection may be reactivated, spreading in the lung and even to other organs.

answer: tributaries flow into rivers.

wetland is a biome that develops when the water gets accumulated in a land exhibiting a huge depression. these form either seasonally or permanently. the water in the wetland comes from rivers, lakes, ocean, flood, rain or other sources. the wetlands includes mangroves, marshes and peatland.

tributaries flow into the rivers develops a wetland because such water will get deposited in the depression and will restrict the original flow of tributary water. hence, water with low drainage current combines with the river water.