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Bess [88]
3 years ago
11

19.

Biology
2 answers:
-Dominant- [34]3 years ago
5 0

Answer:

D, they are all the same size.

Black_prince [1.1K]3 years ago
4 0

Answer:

D They are the same size

Explanation:

Have a great day

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Fraternal twins are ________ similar genetically than are regular, non-twin siblings.
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<span>Almost. Due to the fact that they will be different at the DNA level.</span>
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Sorry if it is blury please help and hurry
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Answer:It is too blurry for me to read please make another question with better quality and i will help you the best i can-Lucy have a nice day

Explanation:

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How would chronic diarrhea affect homeostasis of the body?
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What is missing from the ecosystem during primary succession
Kaylis [27]

Answer:

competition

Explanation:

After an ecosystem has been destroyed because of certain catastrophe and all of the space that it occupied is totally cleared and open for overtaking, the primary succession comes in action. When the primary succession occurs, there's no competition, as pretty much everything has been destroyed from the previously existing ecosystem. The pioneers of the primary succession are organisms that do not require a lot to prosper, such as the mosses and lichens. As they start to cover the barren land, little by little they manage to change the composition of the rocks, thus resulting in the formation of the first soils. As that happens, the secondary succession comes on the horizon as now it has conditions for it, so the species from it overtake and replace the species form the primary succession.

6 0
3 years ago
Most amines are ________, meaning they dissolve in water and therefore cannot cross the cell membrane. The ________ hormones are
Doss [256]

Answer: 1. Lipophobic

              2.Thyroid

              3.lipophilic

Explanation:

 Chemical messengers can be classified by their chemical characteristics including their solubility in water and their chemical structure.  

Depending on their solubility in water they can be classified in two groups:

  • Hydrophobic (lipophilic) - Molecules are lipid soluble and can easily cross the plasma membrane.

  • Hydrophilic (lipophobic) - Molecules that are water soluble and do not readily cross the plasma membrane.

Depending on the chemical structure  

Amino Acids are lipophobic.

Amines are derived from amino acids and contain an amine group (-NH2, known as the amino group). An important group of these are the catecholamines which contain a 6 carbon ring (catechol) and are derived from tyrosine. These include dopamine, norepinephrine and epinephrine. The thyroid hormone is derived from tyrosine.  All except thyroid hormones are hydrophilic. The thyroid hormone is lipophilic (hidrophobic)

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