Bacterial cells are often found in very hypotonic characteristics prevents them
ID: 92203 • Letter: B
Question
Bacterial cells are often found in very hypotonic characteristics prevents them from taking in too much water from their environment? The presence of a cell wall, which allows for a buildup of tonic pressure, preventing additional water from entering the cell The presence of a cell wall, which allows for a buildup of turgor pressure, preventing additional water from entering the cell The capacity of the cell to expel water as quickly as it take it up the presence of an active water pump None of the above Which of the following statements regarding the sequence of events shown in the figure below is true? The cell in condition C has been immersed in a hypertonic solution. The concentration of solutes inside the cell in condition C is higher than the solution surrounding the cell. The cell in condition A has been immersed in hypotonic solution. Osmosis occurs when going from condition B to C but not from B to A. Diffusion of out of the cell is causing the events shown in the transition solutes from condition B to A. Which of the following statements regarding cellular membranes is false? The hydrophobic nature of the phospholipid tails limits the migration of polar molecules across the membrane. Integral proteins and phospholipids move fluidly throughout the membrane. Membrane phospholipids flip back and forth from one side of the bilayer to the other. Glycolipids and glycoproteins serve as recognition sites on the cell membrane. All of the above are true: none is false.Explanation / Answer
Answer 3). the answer is the presence of the cell wall which allows for the build up of a tonic pressure preventing additional water from entering the cell this is because the concentration of the solute in the external environment is very lower in the hypotonic condition than the concentration present in the internal environment of the cell so during the hypotonic condition usually direction of the osmosis occurs from the hypotonic solution towards the cell so as the more amount of water will enter into the cell which will leads in the swelling of the cell and may result in the burst. so we can say that the slight amount of hypotonic environment may be good for the bacterial cell as it is adjusted quite easily by the bacterial cell bacause of their rigid cell wall.
4) Answer. In this the true statements are B) because the concentration is higher is this case and the cell is in the hypotonic state because the concentration of the external environment is low as compared to the internal environment so due to which the water may likely to enter into the cell and due to which the solute concentration into the cell is higher.
5) Answer. All the above statements are true, the explanations are given below.
A)true because as the phospholipids contains the two chains of fatty acids which are long and as they are hydrophobic in nature and are opposed by water so when these chains are placed in water the tails of the phospholipid will limit the migration of molecules across the membrane.
b)true because integral protein have been merged with the phospholipid these integral proteins will also contains the residues which may communicate with fatty acyl which are one of the member of group of phospholipid and allows the protein into the membrane.so thats why fluid move throughout the membrane.
c)true.the phospholipids will arrange themselves in the form of bilayer and they have the characteristics that they will hide their tail and will only show their hydrophilic nature or region to the water.and due to which they flip from one side of bilayer to another.
d)true.the cell should interact will the another cell. this can be only possible if one cell could recognize the another so thats why glycolipids and glycoproteins will serve as recognition site on cell membrane.
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