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gavmur [86]
3 years ago
5

I need help on these questions please.

Biology
1 answer:
horrorfan [7]3 years ago
6 0
You need to read the article
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Restriction enzymes are used in making recombinant DNA. Describe the role restriction enzymes perform when constructing recombin
Andrei [34K]

Hi,

Recombinant DNA technology is the process in which a target gene  of interest is replicated by inserting it into a vector and creating a recombinant DNA. This recombinant DNA is then returned into an expression system where it is replicated several times to give rise to multiple copies of our desired gene or that gene product.

One of the very important role for the execution of this technology is performed by Restriction endonuclease enzymes. These are the enzymes that have ability to cut the DNA fragment at specific sequence into fragments of different lengths called restriction fragments.

  • They play a very important role in recombinant DNA technology:
  • They can map the location of specific restriction sites where the target sequence is identified and cleaved.
  • They cut down the DNA at specific sites called restriction sites. The host DNA in which foreign gene or target gene is inserted is also cut with the same restriction enzymes. So in the recombinant DNA technology, restriction enzymes act like a molecular scissor which identify and cut certain DNA sequences as per or requirement.
  • The target sequence can be cut from multiple places by restriction enzymes since our target sequence can be present multiple times in the DNA of organism.
  • When restriction enzymes cut the DNA, they leave sticky or blunt ends at that site in such a way that these ends are able to bind with the complementary bases of vector DNA when introduced.
  • Then another enzyme DNA ligase seals the ends of target DNA and vector DNA making a whole recombinant DNA that is ready to be cloned and progress further steps of recombinant DNA technology.

<em>You can see attached image for better understanding.</em>

Hope it help!


6 0
3 years ago
HELP PLZZZ<br> how many amino acids are coded for the mRNA strand AUGCGAUACUGA
garri49 [273]

Answer:

4

Explanation:

Amino acids are coded for by codons, which are triplets of nucleotides.

To work out how many amino acids are present, simply divide the cells into triplets.

AUG CGA UAC UGA

There are four triplet codons, so the sequence codes for four amino acids.

8 0
3 years ago
Muscular dystrophy is a neuromuscular disease that weakens a person's muscles. Which main body systems would be involved in this
chubhunter [2.5K]

Answer:

nervous, muscular , and vascular

8 0
3 years ago
Read 2 more answers
Organisms in the same ecosystem are all _______. a. interrogative b. interdependent c. intermediate d. interceptive please selec
Zanzabum

Option (B) Interdependent is the correct answer.

How do organisms live in an ecosystem?

An ecosystem comprises two components ie. living and non-living. Living components include all the organisms such as animals, humans, plants, etc., and nonliving components include soil, air, water, etc. All the organisms which live in the same ecosystem are interdependent, as well as dependent on nonliving components too. This is called interdependence.

They are dependent on each other for food, shelter, pollination, seed dispersal, etc.

The food chains and food webs are the most important example of interdependence shown by organisms living in an ecosystem.

To read more about the ecosystem visit here:

brainly.com/question/13979184

#SPJ4

7 0
2 years ago
Assume the volume of air inhaled and exhaled is 500 mL. Calculate the difference (in mL) between the amount of oxygen inhaled an
pogonyaev
Amount of O2 inhaled;
500 x 20.94% = 104.7mL

Amount of O2 exhaled;
500 x 16.37% = 81.85mL

Difference = 104.7 - 81.85 = 22.85mL

Hope i helped!
8 0
3 years ago
Read 2 more answers
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