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sergejj [24]
3 years ago
11

Short segments of newly synthesized DNA are joined into a continuous strand by _____.Short segments of newly synthesized DNA are

joined into a continuous strand by _____.single-strand binding proteinligasehelicaseDNA polymeraseprimase
Biology
1 answer:
Sloan [31]3 years ago
4 0

Answer:

a. Ligase

b. Ligase ( it's repeated)

Explanation:

DNA synthesis begins, therefore, by synthesizing a short segment of RNA called a primer, which primer is synthesized by an enzyme called Primasa. Primasa is an RNA polymerase that uses DNA as a template. All fragments of Okazaki begin with a Primer. Subsequently, the DNA polymerase III Holoenzyme performs the synthesis of the corresponding DNA fragment until it reaches the next primer. At that time, DNA polymerase Ia replaces the DNA polymerase Holoenzyme III. The DNA polymerase I is responsible for removing the RNA primer through its 5'P-3'OH exonueotic activity and at the same time fills the hole by synthesizing DNA.

Finally, the two Okazaki fragments have to be joined, it is necessary to link the 3'OH end of a fragment with the 5'P of the next fragment. This work of sealing and joining the successive fragments is done by Ligase.

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A geologist is studying two different rhyolite flows to determine if they were erupted at the same time.
ss7ja [257]
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It can be calculated using the equation:

 (1/2)ⁿ = x

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n - a number of half-lives.


x = 50% = 50/100 = 0.5

n = ?

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Q10. The answer is 2.


It can be calculated using the equation:

 (1/2)ⁿ = x

x - decimal amount remaining, 

n - a number of half-lives.


Rhyolite #2 has 25% of the parent H remaining:

x = 25% = 25/100 = 0.25

n = ?

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Q3. The answer is 100 million years.


A number of half-lives (n) is a quotient of total time elapsed (t) and length of half-life (H):

n = t/H

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t = 100 000 000 years<span>

</span>

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