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makkiz [27]
3 years ago
12

What is the role of dna helicase?

Biology
1 answer:
Sliva [168]3 years ago
8 0

Helikazlar tüm canlılar için hayatî önem taşıyan bir enzim sınıfıdır. Nükleik asitlerin fosfodiester omurgası üzerinde hareket ederek birbirlerine hidrojen bağlarıyla bağlanmış nükleik asit ipliklerini (DNA'nın, RNA'nın veya RNA-DNA hibritlerinin) ayrıştırır.

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describe the results if you do an experiment to determine the physical properties of tyrosinase. if you run gel filtration and S
katovenus [111]
Gel filtration and SDS-PAGE could be used for <u>determining a molecular weight of proteins</u>, such as tyrosinase. In both methods, molecules are separated based on their size. <u>Gel filtration</u> measures the molecular weight of <u>native proteins</u> and <u>SDS-PAGE</u> measures the molecular weight of <u>denaturated proteins</u>. 
4 0
2 years ago
The allele that codes for "having freckles" is dominant (f) over the allele that codes for "no freckles" (f). a heterozygous, fr
Inessa05 [86]
1/2 is the correct answer
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8 0
3 years ago
Read 2 more answers
Which of these is not a structure found in prokaryotic cells?. A. a defined nucleus. B. ribosomes. C. cytoplasm. D. cell membran
Oliga [24]
Answer - A
Prokaryotic cells, being unicellular organisms, do not have a defined nucleus. They have a nucleoid in place of the nucleus which is formed of a single chromosome consisting of double stranded DNA.
5 0
2 years ago
An albino woman marries a phenotypically normal man with no family history of albinism. What percentage of their children are li
maw [93]

Answer:

0%

Explanation:

This involves a single gene coding for melanin pigment in the skin. The recessive form of this gene (allele) is albinism while the dominant form is a normal skin. The question highlights that the normal male parent (dominant) has no family history of albinism, this means that nobody in their family has ever possessed albinism or has been a carrier/heterozygous for the trait. This is because a carrier/heterozygote will always produce the recessive trait (albinism) if crossed with another carrier or albino individual.

In a nutshell, the normal male parent is homozygous for the dominant trait. Hence, if a homozygous dominant male is crossed with an albino woman (homozygous recessive), all their offsprings will possess a heterozygous genotype and dominant phenotype. Meaning that none of their children will ba an albino.

Hence, the percentage of their child being an albino is 0.

7 0
3 years ago
HELP PLEASE DUE SOON
Aleks [24]

Answer:

Adding a lake near any town will most likely increase rainfall because of the added water, and water vapor levels will also increase. Because of the excess water in the environment, more water will be found in the surrounding atmosphere (the same reason precipitation will increase in the area.)

4 0
3 years ago
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