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Ilya [14]
3 years ago
12

The polar end of the phospholipid plasma membrane is _____.

Biology
1 answer:
Alina [70]3 years ago
5 0
Phospholipids are the outermost layers of animal cells. Its structure is composed of fatty acid chains that are attached to a glycerol backbone, and a phosphate group that is modified by an alcohol. 

The polar end of the phospholipid plasma membrane is hydrophilic (water-loving or can absorb water) and is a negatively charged phosphate group. In the cell they are facing outward, attracting intracellular and extracellular fluid. 

The non-polar tails of the phospholipid are fatty acid chains that are hydrophobic (water-fearing or unable to absorb water). The tails are facing the inside of the cell away from water towards the inner membrane of the cell.
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Which of the following is an example of homologous structures?
Mars2501 [29]
The answer would be D. The definition of a homologous structure is an organ or body part that appears in different animals and is similar in structure and location, but doesn't necessarily share the same purpose. The birds and rabbits have similar bones in their forelimbs, but one uses them to run and other uses them to fly.
8 0
3 years ago
Which terrestrial biomes are both dependent upon periodic severe drought and/or fire?
Elis [28]

Grassland terrestrial biomes are both dependent upon periodic severe drought and/or fire.

Terrestrial biomes are ecosystems that can be found anywhere on earth that has a similar climate pattern and are not necessarily close to one another. Tropical forests are an illustration of a terrestrial ecosystem. Forests, grasslands, deserts, and tundra are some of the different biome types found in the terrestrial environment. There are eight main terrestrial biomes: temperate grasslands, temperate forests, boreal forests, Arctic tundra, and tropical rainforests, savannas, subtropical deserts, and chaparral.

The grassland biome consists of terrestrial areas where grasses predominate and there aren't many big trees or bushes. Temperate grasslands, tropical grasslands (sometimes called savannas), and steppe grasslands are the three main types of grasslands.

To know more about terrestrial biomes refer to:  brainly.com/question/9901718

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5 0
1 year ago
Which reason best explains why bacteria can reproduce quickly
choli [55]
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3 0
3 years ago
Read 2 more answers
Substance A and substance B are mixed together. To separate the mixture, water is added, and substance A is filtered out. Then,
Sveta_85 [38]

The correct answer would be that substance A is rice, and substance B is sugar.

For substance A to be filtered out, it means that A is a water-insoluble substance and for substance B to be recoverable by evaporating off the water, it means that B is water-soluble.

Thus, A can neither be sugar nor alcohol because neither can be recovered by filtration. Also, B can neither be coffee nor alcohol because they can not be recovered as residue through evaporation of water.

Therefore, the only correct answer is that substance A is rice, and substance B is sugar because rice can be filtered out from water while the water-soluble sugar can be recovered by evaporating the water.

More about separating mixtures here: brainly.com/question/2827008

6 0
3 years ago
The ________ division of the autonomic nervous system is often called the "rest-and-digest" division.
Ad libitum [116K]

Answer:

Parasympathetic nervous division

Explanation:

The parasympathetic division of nerves is a part of the autonomic nervous system which gets activated during the relax conditions.

The parasympathetic nervous system is the opposite of the sympathetic nervous system which gets activated during the stress condition.

The parasympathetic division gets activated when the level of cortisol and adrenaline gets decreased and the body responds by detoxifying, digesting and building immunity.

Thus, Parasympathetic nervous division is the correct answer.

4 0
3 years ago
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