Common examples of this would be if you place your hand in extremely warm or cold water, and an immediate response of pulling out of the water or any fluid, is an example of this extreme response, other responses are what is done in everyday, like being thirsty or hungry etc.
These behaviours are shared by all organisms even the most simple ones.
The correct answer is D: I and II only.
Viruses have protein capsids, which protect their genetic material. This capsid sometimes is covered by viral envelopes which have glycoproteins on their surface. Glycoproteins help in the process of binding to the host cell and infecting it. In this example, virus III has the structure of a bacteriophage and it does not seem to have glycoproteins. Bacteriophages use their tail fibers to attach to the bacterial host and inject their genetic material. On the contrary, viruses I and II have glycoproteins sticking out of their envelopes.
The third answer is correct
Hey there,
Answer:
Tropism is a turning movement of a biological organism.
Hope this helps :D
<em>~Top</em>
Answer:
Diffusion through a semi-permeable membrane
Explanation:
A membrane that would only allow water, ions and certain molecules to pass through it by diffusion while restricting other large molecules molecules from passing through is called semi-permeable membrane
The iodine molecules were dissolved in the water in the beaker to form iodine solution.When the starch in the tubing was immersed into the red iodine solution, the molecules of iodine diffuse across the tubing walls which acts as the cells membrane -selectively permeable membrane to react with the starch solution. The reaction turns the starch blue black
The characteristic of the cell membrane is due to the lipid bi-layer which allow certain substance pass through while restricting others because of the inner hydrophobic (water hating) and outer hydrophilic phospholipid layer. (water loving layer)These forms the double bi layer to selectively control the movement of substances across it.