The cell membrane is made up of a double layer of phospholipids. That is also the reason why the cell membrane is called the phospholipid bilayer; containing two layers of phospholipids.
Explanation:
Bacteria have a thin flexible cell wall. Only plant cells have primary and secondary cell walls.
Igneous: these rocks are volcanic in nature. They are split into two categories in where they cool/crystallize: intrusive (internal) and extrusive (external). Intrusive volcanic rocks cool slowly, so they contain (usually) large crystals, like granites. Extrusive rocks are quite the opposite, in which they cool very quickly. This is where you get your obsidian glass and basalts.
<span>Sedimentary: these rocks are depositional and categorized by the kind of sediment it is made up of. </span>
<span>Metamorphic: this can be the offspring rock of either a morphosed igneous or sedimentary rock. This metamorphism is accomplished by heat and/or pressure, and during a great length of time. </span>
The answer is; T
The convection currents in the mantle are similar to those of water in a vessel being heated from below. As the mantle is heated by the core below, the hotter part of the magma begins to rise and the cooler mantle above begins to dive to replace the rising hotter mantle. It is these currents that cause the tectonic plate movements of the earth’s crust.
• a liver is transplanted from a donor to a recipient - adaptive immune response (via T killer cells or B cells)
• a person is injected with the typhoid vaccine-adaptive immune response (The immune response to vaccination may not be perceived as illness but still confers immune memory)
• swelling occurs around the area of a scratch-innate immune response (inflammation)
• a person has a high fever during a viral infection-innate immune response(includes substances called interferon and interleukin-1 which causes fever).