Answer:
Oxygen can get into the water in several ways: Oxygen from the atmosphere dissolves and mixes into the water's surface. Algae and underwater grasses release oxygen during photosynthesis.
Explanation:
Hope this helps you
<span>Stabbing pain located in the chest with a cough on one side.</span>
<span>Mercury oxide --- > liquid mercury plus oxygen.
If 10 grams of mercuric oxide were being heated, and 9.3 gram of liquid mercury is being produced. To find the grams of oxygen produced is, you take the mass of mercuric oxide minus the mass of liquid mercury which is 10 grams - 9.3 grams = 0.7 grams.
The answer is 0.7 grams.</span>
Answer:
D) bilayer membranes
Explanation:
Two lipidic bilayers compose the cell membrane. There are also proteins and glucans incrusted in between. Lipids are amphipathic molecules with hydrophilic heads -negatively charged phosphate group- and hydrophobic tails. Lipids are arranged with their hydrophilic polar heads facing the exterior and the interior of the cells, while their hydrophobic tails are against each other, constituting the internal part of the membrane. Membranes are fluid, which means that the composing molecules can move through them.
Lipids can easily change places with other neighboring lipids by lateral diffusion in the same layer. This is passive diffusion, which means that it does not need energy to happen.
Lipids can also diffuse transversally to the other layer but not as easily as lateral diffusion. Jumps between monolayers are infrequent as the lipidic polar heads meet the fatty acid barrier.
There are also other lipidic movements as rotational diffusion that imply the rotation of the molecule.
