Answer:
To explain the connection of a plant cell and cell wall, the cell wall is an organelle- part of the cell- that helps keep the box like structure of the plant and block out anything bad. Not only that, but the cell wall is like the first defense, right in front of the cell membrane.
Explanation:
Biology. And my sentence pretty much explained it.
Answer:
Raisin In Water. If you put a raisin into pure water, it swells up over time. This happens because raisin contains a higher concentration of sugar and other solutes than water, so water moves into the raisin cells by osmosis. Since the solvent (pure water) enters into the raisin cell, this is an example of endosmosis.
Explanation:
The reason why animals need continuous supply of oxygen is to survive. Almost all of the animals rely on the oxygen in order to be able to survive and function properly.
The oxygen is what enables the respiration, and the respiration is what allows for the cells to be alive and be able to function. Without constant oxygen supply, the cells will not be able to function, thus they will die, which will cause the whole organism to die.
Also, the oxygen is a gas that is used for the burning of glucose into fuel. This basically means that the oxygen is the final detail that enables the organism to obtain nutrients. If the oxygen is not present, than the organism will do everything to create glucose and it will manage to, but it will not be able to turn into a fuel for itself, thus it will not be usable.
Answer:
Inversion
Explanation:
This type of mutation is not as lethal on addition of deletion mutations. This is because it does not cause a frame-shift mutation. Inversion only reverses the order of nucleotides in a section of a DNA strand and the genes in this regions may produce defective proteins.
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Duplication of an ancestral opsin gene occurred in the primate lineage (Old World primates) and subsequent mutations in the new copy resulted in two types of opsin, instead of just one.
<span>Opsins are a group of light-sensitive proteins found in photoreceptor cells (cone cells) of the retina and they are the primary photopigments in primate eyes. Opsins are involved in vision, mediating the conversion of a photon of light into an electrochemical signal, the first step in the visual transduction cascade.</span>
<span>The difference in colour vision between New and Old World primates results from differing arrangements of the photopigment genes on the X chromosome. <span>In Old World primates the three photopigments are required for trichromatic colour vision and they are encoded by two or more X-chromosome photopigment genes and an autosomal photopigment gene. New World monkeys typically have only one X-chromosome pigment gene</span>.</span>
