specific macrophage populations promote both cardiac scar deposition and subsequent resolution in adult zebrafish

1 answer:

7 0

Specific macrophage populations help by promoting both cardiac scar deposition and subsequent resolution in adult zebrafish. It is a correct statement.

<h3>What is the effect of macrophages on zebrafish?</h3>

There is an inflammatory response to tissue injury. It is an important part of the process of repair. Scar tissue deposition is a direct downstream consequence of this kind of response in several tissues including the heart tissue.

Adult zebrafish do not only have the ability to regenerate lost cardiomyocytes. They can also remodel and resolve a scar which is extracellular, in tissues like the heart. This resolution of the scar is a poorly understood process.

Therefore, specific macrophage populations help by promoting both cardiac scar deposition and subsequent resolution in adult zebrafish.

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Question 1.) Part A.

Nuetrik [128]

The finches are a type of birds that have lot of variations among them, or rather high speciation. The speciation has been the result of the free niches in the food chains and their adaptations to exploit a particular type of food source. Some finches feed on insects, some on fruits, some on seeds, and that has contributed to different types of beaks among them so that they can be more efficient when it comes to obtaining food. If there are equal amounts of insects, seeds, and fruits in a particular environment, than the numbers of finches that feed upon them will also be roughly the same if there isn't any changes in their food sources. The finches that feed upon the fruits and seeds though will be in higher numbers than the finches that feed upon insects, and the primary reason for this is that the plants are producers, thus they provide more energy, while the insects are consumers, so they provide less energy.

It can be stated that the finches, their numbers, and amount of species, directly depend on the environment and the food sources available in it. As this is a highly adaptable type of bird that often is able to out-compete the other species feeding on the food sources, if there is the slightest gap in the food chain, it will occupy it. The more food sources there are, the larger the population of the finches, and the more different types of food sources there are, the higher the speciation among the finches. The population size though will directly be dependent on the type of food source and the amount of energy it provides for the birds.

6 0

3 years ago

Can someone help me with a biology related question? I'm offering good points!!!!! Help me out please.

miss Akunina [59]

First, write out all combinations for the parents:
SsBB:
SB
sB
SB
sB

ssBb:
sB
sb
sB
sb

So now that you know what to put on as the x and y for the Punnett Square, set it up:

 | SB | sB | SB | sB 
sB | SsBB | ssBB | SsBB | ssBB 
sb | SsBb | ssBb | SsBb | ssBb 
sB | SsBB | ssBB | SsBB | ssBB 
sb | SsBb | ssBb | SsBb | ssBb 

Now, listing each possible genotype and the number of times they show up in the square:
SSBB
0 times
SSBb/SSbB
0 times
SSbb
0 times
SsBB/sSBB
4 times
SsBb/SsbB/sSBb/sSbB/
4 times
Ssbb/sSbb
0 times
ssBB
4 times
ssBb/ssbB
4 times
ssbb
0 times

Since there are only 4 genotypes are possible, set up ratios of those four:

SsBB:
4 times/16 total = .25 = 25%

SsBb:
4 times/16 total = .25 = 25%

ssBB:
4 times/16 total = .25 = 25%

ssBb:
4 times/16 total = .25 = 25%

This means that the genotypes have a 25% : 25% : 25% : 25% likelihood.

Now, let's figure out the phenotypes of the 4 genotypes:
SsBB:
Ss = dominant
BB = dominant

SsBb:
Ss = dominant
BB = dominant

ssBB:
ss = recessive
BB = dominant

ssBb:
ss = recessive
Bb = dominant

So we have 2/4 that are S-dominant B-dominant and 2/4 that are S-recessive B-dominant.
This means that the phenotypes are:
2/4 = 50% Thin stripes with black eyes, and
2/4 = 50% Thin stripes with gray eyes.

I hope this helped you out :)

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3 years ago

What is the name of structure m in the diagram above

tresset_1 [31]

Where is the picture?

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4 years ago

Which pair best matches a type of land cover with an appropriate land use?

zepelin [54]

Answer:

The correct option is C) Rangeland- Grazing livestock

Explanation:

Rangeland can be described as a land which consists of grasses, shrubs, woods, wetlands etc which are ideal for the grazing of domestic and wetland animals. Hence, a rangeland is used for grazing livestock. Hence, option C is correct.

Other options, like option D, is not correct because an urban land supports city life. It is not ideal for the growing of crops as it contains pollution of the city.

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Suppose that you are in charge of designing a fracking job site. Which of these locations would be most ideal for the site?

andreyandreev [35.5K]

Answer:

B. On a flat, vacant plot in the outskirts of the city

Explanation:

Fracking, also known as hydraulic fracturing is a drilling method used in the oil and gas industry of most countries. It is the process whereby natural gas and petroleum is extracted from deep down the Earth. A crack is made in the rock layers, followed by the injection of a liquid called fracking liquid, which is usually water, at a very high pressure.

The process of fracking has serious environmental side effects e.g. release of harmful gases, noise pollution, water contamination etc. and hence, when choosing a fracking site, environment's sustainability and safety of people should be taken into account. This is why a fracking site cannot be designed in a residential city or around a neighborhood. The site should rather be designed in a location where it would pose a minimal environmental threat to the people e.g flat, vacant plot in the outskirts of the city

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4 years ago