Предмет: Русский язык, автор: Капитошка02

Ловушка-приспособления для ... кого либо.Пожалуйста вставьте пропущеное слово!

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Автор ответа: atamanenko1985

Ловушка-приспособления для отлова кого либо.

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Every human being begins life as a single cell, a fertilized egg, by the time reachers adulthood, the body consists of 100 trillion cells. The cell is a fundamental component ol all living thing. As cells deteriorate , people age. As cells malfunction, people get sick. If cells were better understood, people might live longer and stay healthier. And thanks to a recent series of extraordinary breakthroughs, scientists arc beginning to leam more about them. One of the molecular biologists says that we are on the verge of a revolution in the understanding of cells.
Scientists discovered three centuries ago that living things contain cells, but only in the last three decades have they begun to piece together the puzzle of how cells operate . They know a few fundamental things: every single adult cell (except ova and sperm) contains the same set genes as the original cell. Still cells come in all shapes, sizes and functions: slim nerve cells more than 3 feet long and about 1 forty-thousandth of an inch wide: transmit impulses between the limbs and the brain: red blood cells 3 ten-thousandth of an inch in a diameter cany life - giving oxygen around the body. But researchers remain baffled by arcane chemical mechanism that enables particular genes in different cells to switch themselves on and off perform differently in varying circumstances .
Each of those trillion cells functions like a walled city. Power plants generate the cell's energy. Factories produce proteins, vital units of chemical commerce . Complex transportation systems guide specific chemicals from point to point within the cell and beyond. Sentries at the barricades control the export and import markets, and monitor the outside world for signs of danger. Disciplined biolojgical armies stand ready to grapple with invaders. A centralized genetic government maintains order.
Toxic garbane. Cells occasionally go wrong. Recycling systems can break down, overloading the cells with their own toxic garbage the result is the fatal Tay-Sachs disease, or some similarly horrendous genetic ailment. Confused by erroneous information, internal factories can add many chemicals to an already abundant supple that they eventually flood the whole body: the resulting accumulations of cholesterol lead directly to cardiovascular disease. A breardown in communications between the nuclei of cells and their outer borders can produce the unrestricted growth that causes cancer. Even if they operate smoothly, normal cells eventual succumb to old age -the process of biological decay that alters the cells and kills organism of which they for the basic units.
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