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shtirl [24]
3 years ago
13

Some cyanobacteria are capable of nitrogen fixation, a process that

Biology
1 answer:
nevsk [136]3 years ago
4 0
Cyanobacteria play an important role in nitrogen fixation. it contain special types of cells called heterocyst, which perform a key role in nitrogen cycle.
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Achondroplasia is a common form of dwarfism caused by an autosomal dominant mutation in the fibroblast growth factor receptor 3
ollegr [7]
<h2>Symptoms of Achondroplasia</h2>

Explanation:

  • Achondroplasia is caused about by a quality change (transformation) in the <em>FGFR3 gene</em>
  • The <em>FGFR3 quality</em> makes a protein called fibroblast development factor <em>receptor 3 </em>that is engaged with changing over ligament to bone
  • <em>FGFR3</em> is the main quality known to be related with <em>achondroplasia Achondroplasia</em> is acquired in an autosomal predominant example, which implies one duplicate of the adjusted quality in every cell is adequate to<em> cause the confusion</em>
  • In the rest of the cases, individuals with <em>achondroplasia </em>have acquired an adjusted <em>FGFR3 quality</em> from a couple of <em>affected parents</em>
5 0
3 years ago
What was produced as a result of the human genome project
joja [24]
A gene map of the human genome
8 0
3 years ago
A certain restriction enzyme digest results in DNA fragments of the following sizes: 4,000 bp, 2,500 bp, 2,000 bp, and 400 bp. S
Paladinen [302]

Answer:

Smaller the size of the DNA fragment, farther it moves during electrophoresis. The sketch of the position of the fragments has been drawn in the figure below.

Explanation:

As we know DNA is a negatively charged molecule. So during electrophoresis the fragments move towards the positive electrode because opposite charges attract each other.

Different fragment move different distances according to their size during the electrophoresis. Smallest segment travels the largest distance in the gel medium while the largest one travels least distance.

In the question there are four DNA fragments with base pairs 4000, 2500, 2000 and 400 so the smallest segment with 400bp will be farthest from the starting point and the largest fragment with 4000bp will travel least distance in the gel medium. Their respective positions are shown in the figure below. The starting point is near the negative electrode.

8 0
3 years ago
4. Which of the following statements about magnetic materials TRUE?
Pani-rosa [81]

Answer:

All of them seems true tho

4 0
3 years ago
Read 2 more answers
1. John observed bacteria at 100X under the oil immersion and then decided to go back to 40X
weeeeeb [17]

Answer:

The observed image will not be sharp

Explanation:

When 100x microscope objective lens is being used, light refraction in the air is enough high to produce image alterations. Image distortions can be minimized by immersion oil because this liquid has a higher refractive index than air. However, light refraction is not usually noticeable when using 4x, 10x and 40x objective lenses. Moreover, this image will not be sharp after putting oil on the slide and going back to the 40x objective, it is for that reason that the 40x is called 'high dry' lens. In consequence, it is required to clean the immersion oil off the 40x objective. In general, it is required to  to remove the oil and refocus off the slide and lens immediately after oil immersion (it can be done by using an oil-soluble solvent).

6 0
3 years ago
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