What is the role of DNA helicase during DNA replication?

Answers

Answer 1
Answer:

Answer:

Helicase enzyme melts the DNA double helix and forms single stranded DNA strands.

Explanation:

Helicases are ATP dependent enzymes that bind to the DNA at the origin of replication. Helicases move along the DNA and use the energy of ATP to breakdown the hydrogen bonds between complementary base pairs that otherwise hold the two DNA strands together.  

Breaking of hydrogen bonds releases two DNA strands from each other. These single-stranded DNA molecules then serve as the template for DNA replication.  

Answer 2
Answer: Helicase "unzips" the two strands of DNA. During DNA replication.

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What evidence suggests the continents were once all together but then drifted apart?

Answers

Answer: The evidences suggesting that the continents were once all together are as follows-

  1. Most of the edges or the boundaries of the continents perfectly matches with the nearby continents.
  2. Similar fossil assemblages has been found in different continents.
  3. Similar rocks have been found at different continents, and also similar age has been observed.
  4. Plate tectonic theory confirmed that all continents earlier were together.
Similar types of rocks in places, same species of animals with slight different evolutions to adapt to climate, the landmasses actually look like they fit together, etc..

Which term includes the other three? A. commensalism B. mutualism C. symbiosis D. parasitism.

Answers

Answer;

Symbiosis


Symbiosis is the term that includes Commensalism , mutualism and parasitism.


Explanation;

Parasitism is a symbiotic relationship does one organism benefit while the other organism is harmed.

Commensalism is a symbiotic relationship between two species in which one benefits, and other is neither harmed nor helped.

Mutualism on the other hand is where both organisms involved from each other. Example is the relationship between an Oxpecker and the rhinoceros or Zebra.

I think the correct answer from the choices listed above is option C. It is t he term symbiosis that includes the other three. Symbiosis is all of those terms (Mutualism, Commensalism, and Parasitism) combined. Hope this answers the question. Have a nice day.

What new experimental method was used after the team of scientists had the hypothesis about mirror neurons?MRI “monkey see monkey do” tests on monkeys performing tasks

double blind placebo experiments

MRI “monkey see monkey do” tests on humans performing tasks

placebo experiments

Answers

The mirror neurons were first discovered on monkeys, and they were tested with fMRI (functional Magnetic Resonance Imaging) - so the correct answer is "MRI “monkey see monkey do” tests on monkeys performing tasks". This means that an MRI scan was performed as the monkeys watched people perform tasks.

Answer:

THE OTHER ANSWER IS WRONG!!!

its c "MRI monkey see monkey do test on humans performing test" on edge 2021

Explanation:

Why aren’t there many fossil jellyfish?

Answers

Jellyfish have no bones.

There aren't many jellyfish fossils because they are made of soft tissues and they dont hve and bones hope this helps.

During the electron transport chain which process leads to the production of large amounts of ATP

Answers

Answer;

High-energy electrons pump hydrogen ions against the concentration gradient.

Explanation;

-The electron transport chain sets up a proton concentration gradient across the inner mitochondrial membrane, with more protons outside the membrane.

-As a result of this gradient, the protons are waiting to get across the membrane. This happens through the transmembrane protein ATP synthase, which uses the energy moving protons through its pore to add a phosphate to ADP, thus producing ATP.

During the electron transport chain, ATP synthase leads to the production of large amounts of ATP.

Further Explanation:

Electron transport chain mainly occurs in mitochondria. The electron transport chain sets up a proton concentration gradient across the mitochondrial inner membrane, with more protons outside the membrane. Due to this concentration gradient, the protons are going outside the membrane. This movement is possible due to transmembrane protein, ATP synthase.

The ATP is produced by the use of proton motive force this reaction is catalyzed by ATP synthase. This multiprotein synthase is also well-known as F0 F1 complex .The ATP molecule is synthesized when proton flow back from the inner membrane down the electrochemical proton gradient. ATP synthase mainly has two components F1 ATPase and F0 which is fixed in the inner membrane and contain alpha, beta and C unit.

As the electrons travel along the electron transport chain, energy is released which helps in the pumping of protons (ions) into the lumen from the stroma through the thylakoid membrane. A proton gradient is allows the movement of protons back to the stroma which in turn results in the formation of ATP through membrane-bound ATP synthase

Learn more:

  1. Learn more about cell organelle brainly.com/question/5923583
  2. Learn more about the diffusion brainly.com/question/1386629
  3. Learn more about the plant brainly.com/question/862697

Answer Details:

Grade: High School

Subject: Biology

Chapter: Plant Cell

Keywords:

ATP synthase, membrane, alpha, beta, proton motive force, Electron transport chain, mitochondria, thylakoid membrane, stroma, energy, proton.

This is a chemical process that uses light to process carbon dioxide in plants.

Answers

photosynthesis. 
it is the process where plants get their nutrience.
Photosynthesis is the correct answer