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grigory [225]
3 years ago
11

Birds migrate from their original habitat to new habitats to search for food and better climate. How is bird migration a kind of

gene flow?
Biology
1 answer:
Charra [1.4K]3 years ago
4 0
  Birds living in a given area birds are multiplier with each other, but long migrate causes some birds (mostly young birds) to settle new areas. This birds make a new generation which he has a new base a genetic squad. 

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A scientist follows this procedure to test whether plants have been performing photosynthesis. Place Plant X in a dark closet an
Igoryamba

Answer:

the scientist obtain that plants perform photosynthesis process in the presence of sunlight and chlorophyll.

Explanation:

they perform photosynthesis process taking water and carbon dioxide in the presence of sunlight and chlorophyll and produce glucose and liberate oxygen gas. Hence sugars are obtained from this process.

5 0
3 years ago
Read 2 more answers
Jorge and edna are affluent, in their mid-seventies, and in relatively good health. their three-bedroom house is more than they
FrozenT [24]

A continuing-care retirement community

A continuing care retirement community is a community that provides multiple care levels all on one campus. These multiple care levels which could include independent living, assisted living, memory care or skilled nursing and rehabilitation are set up to provide all of the care that one will need throughout his lifetime.  For the question given above, a continuing-care retirement community might be best alternative for this couple because it has the resources and staff available to meet their needs and they can rest easy if their health changes in the future.

 






5 0
3 years ago
Differentiate the pH conditions of the stomach and intestine and how does it help in the digestion of food.
babunello [35]

Answer:

pH of stomach is more acidic ranging from 1.5 to 3.5 meanwhile intestine is more on the neutral side ranging from 6 to 7.4

Explanation:

as far as it is concerned about digestion relation between the two stomach and intestine is  that stomach has more acidic pH because most of the the digestion occurs in stomach. the more acidic ,the more quickly food will be broken down to essentials .like an upset stomach as it overdoes the digestion as for the intestine it is mainly responsible for absorption of already digested food..

7 0
2 years ago
During conjugation, one gene (A) is found to transfer to the recipient bacteria 26 minutes following the start of conjugation, w
AnnyKZ [126]

Answer:

a. All of the answers are correct.

Explanation:

During conjugation a bacteria transfers it's genetic material to another bacteria. The genetic material has genes in a particular order so we can easily know the order of the genes through experimentation. The transfer of genes occurs as per the time allowed. If two genes are nearby then they will be transferred one after the other.

For example in the given question, gene A was transferred to recipient bacteria in 26 minutes, gene M was transferred in 37 minutes while gene T was transferred in 45 minutes, it simply means that the order of genes is A M T. Gene M was transferred to another bacteria after A was transferred because time required to transfer it is 37 minutes which is less than time required to transfer A which is 26 minutes. Gene T took maximum time to get transferred so it will be last to be transferred.

After calculation, we can easily infer that the genetic distance between A and M is 11 minutes (37 minutes - 26 minutes = 11 minutes). Similarly we can get genetic distance between A and T as 19 minutes and between M and T as 8 minutes. So all the given options are correct.

8 0
3 years ago
Compare and contrast the mechanisms of getting material across the plasma membranes of cells. Tells me what the mechanisms are i
stepladder [879]

Answer:

Materials get transported from the cell by some mechanisms such as Active Transport, Passive Transport, Diffusion, etc.

Explanation:

Active Transport :

It is a process by which, materials are transported from the extracellular membrane to the intracellular membrane with the help of ATP. It has a few types :  

Primary Active Transport :  

This system is standing upon the sodium-potassium pump. It moves out   Na⁺ from the cell and allows the entry of K⁺ into the cell. In this process ATP is a source of energy. E.g, Sodium-potassium pump.

Secondary Active Transport :

It is mainly standing upon Primary Active Transport. In this process, the main key point is the concentration gradient. There is already a concentration gradient set up by the primary active transport. This system uses that up and moves other substances against their own gradient concentration. E.g, assuming, there is a high concentration of sodium outside the cell,  if a route such as a channel or a carrier protein is open then sodium ions will move into the cell.  In this transport system, some cotransporters are used who move in the sodium ion into the sodium gradient.  

Passive transport :

It is a process by which, substances cross the plasma membrane without acquiring any energy from the cell. Here, no energy is needed because the substances are moving from higher concentration to its lower concentration. E.g, cell membrane or plasma membrane works as a permeable or semipermeable membrane.  

Diffusion :

It is the movement of a substance across a membrane, due to the concentration gradient, without any help from other molecules. E.g, movement of the gaseous molecule from cell to cell.

8 0
3 years ago
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