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Elena-2011 [213]
3 years ago
14

Why is xylem known as a dead tissue

Biology
1 answer:
IgorLugansk [536]3 years ago
4 0
Because it’s main organelles are missing
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Was the bag that gained the most weight hypertonic hypotonic or isotonic
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Definitely hypotonic. isotonic wouldn't change weight and hypertonic would lose weight.
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A star has less mass than a galaxy and more mass than a planet.<br> True<br> False
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True

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Barbara is a research scientist at an organic pest control company. Part of her job is to find foods that ants will eat so the f
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Barbara investigating that which food the ants like the most in order to use this food for killing the ants and removes them from a specific area.

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Which macromolecule will our bodies use first for energy?
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Your body uses carbohydrates, lipids and proteins for energy. When small organic molecules bind together, they form larger molecules called biological macromolecules. Biological macromolecules fall into four categories: carbohydrates, proteins, lipids and nucleic acids. Your body uses carbohydrates, lipids and proteins for energy.

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Your body uses carbohydrates, lipids and proteins for energy. When small organic molecules bind together, they form larger molecules called biological macromolecules. Biological macromolecules fall into four categories: carbohydrates, proteins, lipids and nucleic acids. Your body uses carbohydrates, lipids and proteins for energy.

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suppopse you were going to deisgn a system for the rapid diffusion of oxygen across a phosphlipid bilayer. according to fick's l
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According to Fick's law, the rate of diffusion of any substance across any barrier is<u> directly proportional to the surface area of the membrane or any layer exposed. and the concentration of the diffusing substance available, but the rate is inversely proportional to the diffusion distance available.</u>

<u />

Thus the rate at which oxygen will move across the phospholipid  bilayer will depend on the concentration or amount  per mole  of the oxygen molecule hitting the phopholipid at  a prticular time and how permeable the phospholipd layer is to oxygen molecules, but the rate of its  movement across will be reduced as the distance between the phosphoslipid bilayer and the diffusing molecules  increases.

Therefore, the concentration of oxygen should be maximised, the surface area of the phospholipid  bilayer should also be maximized. the distances between the phopholipid and the  vessel containing the diffusing oxygen molecules should be drastically reduced. With this Fick's law  has been applied , and therefore maximum oxygen molecules can diffuse across.

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