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Biology

2 answers:

marishachu [46]2 years ago

7 0

Answer:

Explanation:

Allushta [10]2 years ago

6 0

Answer:

C.)

Explanation:

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Drilling and digging are industrial activities that result in the release of toxic chemicals into the ground and water

Vika [28.1K]

In my opinion true that it results in releasing toxic chemicals into ground and water

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2 years ago

A tree of life depicting the hypothetical phylogeny of the three domains is shown above. A star is placed at the common ancestor

svlad2 [7]

Answer:

Explanation:

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3 years ago

What are the two major components of a carbon footprint<br> and Why?

denis-greek [22]

Look it up online!!!!

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3 years ago

One of the grand challenges in biology is understanding how the first cells formed on Earth. Since all cells are bound by a cell

coldgirl [10]

<h2>Answer is option "A"</h2>

Explanation:

Oils and fats, which in science are called lipids, are known as amphipathic molecules. These molecules have two distinct ends to them: a water-loving (hydrophilic) side and a water-fearing (hydrophobic) side. While the hydrophilic sides of a lipid will associate with the water in a solution, the hydrophobic sides of the lipid all cluster together to 'hide' from the water. Lipids therefore cluster together and form spheres where the hydrophobic sides are in the center away from the water while the hydrophilic sides are on the outside, associating with the water.
The ability of the atoms within a group to form hydrogen bonds with the water molecules around them makes them hydrophilic. Oxygen and nitrogen atoms readily form hydrogen bonds with water molecules, so any organic molecules that have oxygen or nitrogen atoms bound to their carbon skeletons will be hydrophilic.
For example, if we take the molecule for cholesterol, we see the OH group on the left is hydrophilic and will form hydrogen bonds with water, while the ring structures, which only consist of hydrogen and carbon atoms, are hydrophobic and will not associate with the water.
There are many different kinds of lipids with different functions. Lets start by examining phospholipids, which compose the cell membranes of animals. They form lipid bilayers, with one set of hydrophilic heads facing the exterior of the cell membrane and the other set facing the interior (as you can see on the diagram on screen). The hydrophobic portions of the lipid bilayer - the lipid tails - face towards one another, which allows them to hide away from the water inside and outside of the cell.
So,the right answer is option A "amphipathic molecules".

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3 years ago

A studenr wants to germinate seeds over the winter

Likurg_2 [28]

Answer:

D and B

Explanation:

We know that seeds need optimal amounts of water, oxygen, temperature, and light to germinate. Therefore the student would need to provide warmth because its winter and water because that would satisfy the need for moisture. Hope this helps!

Source: https://extension.psu.edu/seed-and-seedling-biology

4 0

2 years ago

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