1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
taurus [48]
3 years ago
6

Which of these occurs first?

Biology
1 answer:
SpyIntel [72]3 years ago
7 0

Answer:

The correct answer is a.  Helicase unwinds DNA

Explanation:

DNA replication is a process in which DNA make it's own copy. There are several enzymes and factors which access the DNA replication process like helicase, primase, SSB protein, DNA polymerase etc.

The first step in DNA replication is the unwinding of double stranded DNA which is accomplished by an enzyme called Helicase. Helicase opens up the double stranded DNA at replication fork by breaking the hydrogen bond between the nucleotides of complementary strands.

This provides a single stranded template for DNA polymerase to form a new complementary strand. In <em>E. coli </em>Dna B is the primary helicase and in humans the primary helicase is MCM( minichromosome maintenance protein complex).

You might be interested in
Where are these cellular receptors located​
katen-ka-za [31]

Answer:

Cell surface receptors (membrane receptors, transmembrane receptors) are receptors that are embedded in the plasma membrane of cells. They act in cell signaling by receiving (binding to) extracellular molecules. They are specialized integral membrane proteins that allow communication between the cell and the extracellular space.

Explanation:

4 0
3 years ago
Look at the table you filled in above. How does the numbers for how much the snakes are consumed compare to how much these preda
S_A_V [24]

The number of organisms decreases on movement from producers to consumers in a food chain. This happens due to decreased energy levels at higher trophic levels.

<h3>What is a food chain?</h3>

Food chain is the sequence of matter and energy transfers as food from one organism to another.

Food chains interconnect locally into a food web as most organisms consume more than one type of animal or plant.

The number of organisms decreases on movement from producers to consumers in a food chain. This happens due to decreased energy levels at higher trophic levels.

Thus, it can be concluded that this is the main reason behind the number of snakes consumed as compared to other organisms.

For more details regarding the food chain, visit:

brainly.com/question/16065961

#SPJ1

8 0
2 years ago
Write in a full paragraph explain how water supports life on earth. Provide eveidence for why you think so
Savatey [412]

<span>Firstly, it is the only substance on Earth that is in liquid form at the temperatures commonly found on the Surface of our planet. Secondly, it is a superb solvent, meaning that other substances regularly and easily dissolve into it. This allows water to carry nutrients to cells, and carry waste away from them.</span>
8 0
3 years ago
What is produced by the process of meiosis?
alex41 [277]
Meiosis is the process of cell division that produces eggs and sperm for sexual reproduction. <span />
3 0
4 years ago
Read 2 more answers
What molecule is our Genetic Code made of?
icang [17]

Explanation:

deoxyribonucleic acid (DNA)

5 0
3 years ago
Other questions:
  • Plzzzz!! Help me !!!
    11·1 answer
  • Pilar is using non-medical techniques for pain management during labor; she has someone insert fine needles into specific locati
    8·1 answer
  • ________. will develop pharyngeal arches. Q1
    5·1 answer
  • What do the stripes in the paper represent?
    14·2 answers
  • The process by which a cell captures the energy in sunlight and uses it to make food called what
    14·1 answer
  • Which of the following statements is/are true of corals?
    6·2 answers
  • WILL BARK BRAINLIEST. LOTS OF POINTS
    15·2 answers
  • Which of the following processes does NOT add carbon to the atmosphere?
    9·1 answer
  • According to Kohlberg's theory, a child in the 1st grade would be in the _________ level of moral development.
    6·1 answer
  • The Boston marathon bomb victims and members of the U. S. military have put the lives of amputees in the forefront of the
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!