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
lesantik [10]
3 years ago
13

Natural enzymes called Choose... Can cut and copy DNA at specific sites. Then the DNA fragments can be separated by the process

of Choose... .
Biology
1 answer:
zysi [14]3 years ago
5 0

Answer:

Natural enzymes called restriction enzymes Can cut and copy DNA at specific sites. Then the DNA fragments can be separated by the process of gel electrophoresis.        

Explanation:

Restriction enzymes recognize restriction sites in the DNA and bind to them. Then they will cut the two DNA strands and give two separate sequences of DNA that can bind to another piece of DNA if the sequence match.

Gel electrophoresis will separate the different cut fragments of DNA by size and charge. The scientists put the DNA fragments in indentations in the gel, then the gel is placed into a gel box with a buffer solution, a negative electrode near the indentations, and a positive electrode on the bottom. When the electric current goes through the gel, the DNA fragments will start to descend towards the positive electrode since the DNA has a negative charge. As a result, DNA strands will descend faster through the gel's pores than the larger strands. The final step is to dye the gel to see the different bands with fragments of various DNA sizes.

You might be interested in
Local and global winds are set in motion by air moving in convection cells. Describe the motion of air in a convection cell. Be
IrinaVladis [17]

Answer:

Due to the earth spherical shape, different latitudes of the planet receive varying solar energy levels from the sun. This is due to the differences in how the sun rays hit the earth surfaces and differences in the length of atmosphere the rays have to travel before they reach the earth's surface.

The equatorial regions get the most energy levels from the sun hence their atmosphere gets heated faster and the hottest. The air mass in this latitude, therefore, gets less fast dense  and begins to rise. The cooler and denser air mass from the poles rushes in, through the  lower atmosphere, to replace the void of the rising air.

When this air mass also gets heated, it too begins to rise. Remember the initial air mass cooled as it rose into the upper atmosphere. This now makes it denser than the air mas below it. As the hotter air mass begins to rise from below it pushes the cooler air mass above laterally. After the lateral movement, the air mass begins to sink slowly as it moves towards the poles because the incoming air mass gets denser than the local air mass.

The lateral movement of the convection current moving to the north is deflected to the north-west due to the Coriolis effect of the earth rotation while the lateral movement of the convection current moving south is deflected to the south-west. These pockets of convection currents are called Hadley cells.

Learn More:

brainly.com/question/2160034

#LearnWithBrainly

8 0
3 years ago
2. Which of the following is a sample of igneous rock?
miskamm [114]

Answer: The actual answer is sample B.

Explanation: Igneous Rocks are either known as Intrusive Rocks which are crystallize that form underneath the Earth's Surface, and Extrusive Rocks which are known as volcanic rocks.

5 0
3 years ago
Give me seven facts about biospheres
abruzzese [7]
The sum of and interaction between all living beings.<span>The biosphere is the global ecological system integrating all living organisms and their relationships. The interaction with the elements of the lithosphere, hydrosphere, and atmosphere is also included. The biosphere, we know today, has evolved for 3.5 billion years.</span>The biosphere covers most of the planet and stretches from the deep ocean to the highest mountain tops. Microorganisms also live deep beneath the surface of the Earth.The biosphere is divided into different biomes. Each of these consist of species that are related in their ability to cope with a specific climate. Biomes are separated by latitude. Arctic and Antacrtic biomes are vastly different from tropical biomes, for example.<span>Climate change influences the distribution of these biomes and to some extent displaces them.</span><span>The biosphere is an important reservoir in the carbon cycle and has a very significant impact on climate through release and removal of CO2 from the atmosphere.</span>
3 0
4 years ago
Read 2 more answers
Identify one trait from the
PSYCHO15rus [73]

The trait that was found in von Meyer's discovery is possession of feathers

<h3>What was von Meyer's 1861 discovery?</h3>

In 1861, the German Palenteologist von

Meyer discovered a fossil known as Archaeopteryx.

The Archaeopteryx possessed belongs to the time period of the dinosaurs.

The special feature of feathers possessed by Archaeopteryx served as evidence for the evolution of birds from dinosaurs.

Therefore, the trait that was found in von Meyer's discovery is possession of feathers.

Learn more about Archaeopteryx at: brainly.com/question/4657862

7 0
2 years ago
100 POINTS !
iren2701 [21]

Answer:

1. Nucleus

2. Nuclear Envelope  

3. Nucleolus

4. Chromatin

5. Nuclear Pores

6. Ribosome

7. I don't know sorry

8. Smooth Endoplasmic Reticulum

9. Cytoplasm

10. I don't know sorry

11. Cell wall?

12. Mitochondria

13. I don't know sorry

14. Rough Endoplasmic Reticulum

15. Ribosome?

16. I don't know sorry

Explanation:

I don't know some of these but I hope this helps! :D

8 0
3 years ago
Other questions:
  • Points A and B are the endpoints of an arc of a circle. Chords are drawn from the two endpoints to a third point, C, on the circ
    14·2 answers
  • What is the difference between a prey and a host in predation? A) A host is killed slowly by its predator while a prey is killed
    5·1 answer
  • When the human body is responding to stress the hormone adrenaline is released a short time later the body returns to normal thi
    10·1 answer
  • What organelle has this function, "hard outer-covering, provides strength and support to cell membrane"?
    7·1 answer
  • An increase in the amount of which atmospheric gas is thought to cause global climate warming?
    5·1 answer
  • Which of the following does NOT influence one's body composition? A. metabolism B. financial problems C. childhood obesity D. me
    6·2 answers
  • What natural methods remove co2 from the atmosphere ?
    9·1 answer
  • When mammals develop in the womb it is called the _____
    11·1 answer
  • Complete the following analogy. Plant is to dermal tissue as animal is to ______ tissue. a. connective b. epithelial c. muscle​
    6·1 answer
  • Match Column A with Column B
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!