The cell membrane is a biological membrane that separates the interior of all cells from the outside environment.
It consists of the phospholipid bilayer with embedded proteins. Cell membranes are involved in a variety of cellular processes such as cell adhesion, ion conductivity and cell signaling and serve as the attachment surface for several extracellular structures, including the cell wall, glycocalyx, and intracellular cytoskeleton. Cell membranes can be artificially reassembled.
Answer:
1)Auditory nerve is answer.
Explanation:
Nerve impulses are transmitted from the ear to the brain via the auditory nerves.
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Answer:
the enzyme helps to break down food, the enzyme is in the
saliva. It can break down a big food molecules and divide it into a
simpler food molecules so that it can be digested. . Enzymes are
complex proteins that speed up the rate of chemical reactions.
A hydrograph is a graph showing the change in the amount of flowing water over time. A hydrograph of a stream in a desert would be different from a forest stream hydrograph in that it would only show a value for flow only for a short time each year. Deserts receive little rainfall and so there would most likely be no flow for many months of the year. Forest ecosystems are different in that rainfall is higher and so the flow will be present all year round except for variations in the dry season and the wet season.
C
According to this theory of chemical evolution, <u>synthesis of organic molecules </u>would need to occur first for life to evolve.
Explanation:
This theory (of Abiogenesis) is corroborated by the <u>Miller –Urey experiment </u>that attempts to replicate the early conditions of the earth. It is believed that organic molecules were created spontaneously through chemical reactions spurred by bolts of lightning resulting in the creation of simple organic molecules like lysine amino acid. These organic molecules made the oceans to become a primordial soup for life.Some hypotheses also claim that this was also possible in the bottom of the ocean in the hydrothermal vents when the earth was even hotter and more active.
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