in the absence of cell wall, due to osmotic pressure, water will flow into plant cell (concentration differences in substrates), and results in the explosion of plant cells. The presence of a tough cell wall limited the range of which the plant cell could enlarge, ...
capsidbacteria have cells ;cell wall ;cell membrane ;cytoplasm ;ribosome(s) ;flagellum ;capsule ;AVP ;(f)HIV infects lymphocytes ;T helper (lymphocytes 1 cells) ;fewer antibodies produced ;infected cells not killed (by immune system) ;phagocytes less effective ;increased susceptibility to 1 ...
These local changes in ion concentration can lead to modified activities of enzymes in the cell wall (e.g. pectinase), the plasma membrane (e.g. cellulose synthetase, callose synthetase), and the cytoplasm (e.g. protein kinase). In particular, the elevated concentration of cytoplasmic Ca2+ ...
解析 water enters;osmosis/diffusion;ref. concentration gradient/more concentrated cell sap;pressure within cell/turgor;cell wall tough/flexible/made of cellulose;prevents cell bursting/membrane tearing;supplies support to plant/stem/leaves;gives shape/rigidity/support to cell; ...
What are the functions of the cell wall? What are the functions of the cell membrane? Why is the relationship between the function of the cell and the function of the body so important? Provide some medical examples. (a) Define chief cells. (b) What is its function?
A cell wall is a layer of extracellular matrix located outside the cell membrane. Cell walls are absent in animal cells but are found in plants, fungi, algae, and other types of cells. A cell wall is particularly important in providing structure and rigidity to plant cells. I...
Volume of air decreases during exhalation(b) Describe how a molecule of oxygen in the air breathed in reaches a muscle cell in the wall of the left ventricle.1.Oxygen enters the tungs and oxygenated blood/red blood cell/oxyhaemoglobin is carried towards the heart via the pulmonary vein.2. ...
Cell Cycle: The cell cycle is important to produce cells for the body. One cell is divided to form many cells which can function to repair, grow and heal different tissues in the body. An excess of the cell cycle can cause cancer as too many cells can feed on the n...
Nisin targets membrane-embedded cell wall precursor 鈥 lipid II 鈥攃apturing its pyrophosphate group (PPi), which is unlikely to evolve, and thus represents a promising pharmaceutical target. Understanding of exact molecular mechanism of initial stages of membrane-bound lipid II recognition by water...
Explain the gram reaction of bacteria in terms of cell structure. Explain how bacteria cells make energy for cellular processes. How does the cell wall allow for synthesis of enzymes in bacteria? Explain. Explain why the cell is an im...