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puteri [66]
3 years ago
12

What molecule is active firts in dna replucation

Biology
1 answer:
stealth61 [152]3 years ago
3 0

Helicase molecules is active first in DNA replication.  DNA helicase are enzymes capable of unwinding duplex DNA to provide the single- stranded DNA templates that are required in processes such as replication and recombination.all helicase separates the strands  double mix helix using energy derived from hydrolysis nucleotide.

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Pls help ASAP !!!!!!!!
zysi [14]
I think it’s organism since it already stated skeletal and respiratory then it means it cannot be tissue or organ because skeletal is included so i say go for organism
5 0
3 years ago
The bottleneck event that decimated the bison was caused by _______.
Whitepunk [10]
The answer is an overhunting.

<span>The bottleneck event means drastic reduction of the population size because of environment changes. The consequence of this is the reduction of genetic variation. The bison population is a good example of the population bottleneck. The bison population drastically reduced its size due to overhunting which culminated at the end of the 19th century, when bisons almost extinct. </span>
7 0
3 years ago
Name and describe each star phase.
Inessa [10]
(A nebula)
is a cloud of gas (hydrogen) and dust in space. Nebulae are the birthplace biths. There are different types of nebula. An Emission Nebubla such as Orion nebula, glows brightly because the gas in it is energised by the stars that have already formed within it. 

(A star)
is a luminous globe of gas producing its own heat and light by nuclear reactions (nuclear fusion). They are born from nebulae and consist mostly of hydrogen and helium gas. 

(red giant)
This is a large bright star with a cool surface. It is formed during the later stages of the evolution of a star like the Sun, as it runs
out of hydrogen fuel at its centre.

(red dwarf)
These are very cool, faint and small stars, approximately one tenth the mass and diameter of the Sun. They burn very slowly and have estimated lifetimes of 100 billion years. 

(white dwarf)
This is very small, hot star, the last stage in the life cycle of a star like the Sun. White dwarfs have a mass similar to that of the Sun, but only 1% of the Sun's diameter; approximately the diameter of the Earth. 

(Black holes)
are believed to form from massive stars at the end of their life times. The gravitational pull in a black hole is so great that nothing can escape from it, not even light. The density of matter in a black hole cannot be measured.
8 0
3 years ago
Which part of a DNA molecule is responsible for the direct coding of specific traits in anorganism?
Anastaziya [24]

The part of a DNA molecule responsible for the direct coding of specific traits in an organism is the nucleotide sequence.

<h3>How is a DNA molecule structured?</h3>

The DNA molecule is the biological molecule that stores genetic information in living organisms.

The DNA molecule is made up of three major components in its structure:

  • Five carbon sugar
  • Nucleotide bases
  • Phosphate group

The five carbon sugar is deoxyribose while the nucleotide bases are four in number as follows:

  1. Adenine
  2. Guanine
  3. Thymine
  4. Cytosine

These nucleotides are responsible for the direct coding of specific traits in an organism.

Learn more about DNA at: brainly.com/question/13541376

#SPJ1

8 0
2 years ago
Why is mating between blood relatives discouraged from a genetic perspective?
algol [13]

Inbreeding is simply defined as the mating of relatives. It is a mating system in which individuals carry alleles that originated from a common ancestor. Inbreeding is considered a problem in humans because inbreeding increases the chances of receiving a deleterious recessive allele inherited from a common ancestor.

3 0
3 years ago
Read 2 more answers
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