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neonofarm [45]
3 years ago
11

The act of preserving or maintaining a resource?

Biology
1 answer:
Licemer1 [7]3 years ago
6 0
I think it’s conservation
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Describe how a plasmid can be genetically modified to include a piece of foreign dna that alters the phenotype of bacterial cell
Ilia_Sergeevich [38]
Simple version:

First, the section with the desirable gene must be identified. Assuming that has already happened, the section of DNA must be excised from the original genome using restriction enzymes, which recognize certain DNA sequences and snip DNA at those sites. DNA ligase is used to "glue" these ends back together. The DNA is inserted into a plasmid (also with restriction enzymes), which would usually contain antibiotic-resistance genes (so they survive in an environment containing the antibiotic, which would also help show if the bacteria have been successfully transformed). 

Then comes the actual transformation process. The bacteria to be transformed are mixed with calcium chloride (which causes the bacteria to be more receptive to the plasmids) and then mixed with the plasmids. The bacterial cells are subjected to a heat shock (the solution is heated and rapidly cooled, e.g. by placing the mixture in a hot water bath and quickly transferred to ice) so they will take up the plasmid (since the temperature change makes the membrane more permeable). The bacteria are placed on a growth medium containing the antibiotic they're resistant to. Only those successfully transformed would survive.
7 0
2 years ago
Eating is important to your body because molecules in food contain_________ energy that cells use to produce ATP and it also sup
oee [108]


Food molecules contain chemical energy which is released when its chemical bonds are broken.

Food undergoes  digestion in the digestive system and is broken down into its monomer units. Carbohydrates, which are the principal source of energy, are broken down into glucose. Glucose is the monomer unit of carbohydrates.

Glucose then is taken up by cells and is used in cellular respiration, which involves three main stages namely glycolysis, Krebs cycle and the electron transport chain, through which a glucose molecule is processed to form at least 36 molecules of ATP.

ATP is the form of energy that cells use.


3 0
2 years ago
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What kind of organism removes animal waste and dead plants from the environment?
nataly862011 [7]
A decomposer
They decompose it
8 0
2 years ago
Proteins are created in the order of...
Anit [1.1K]

Answer:

B

Explanation:

DNA is made first, which the makes it's counterpart RNA, which makes protein because that's it's job.

7 0
2 years ago
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Which forearm bone(s) contribute(s) most heavily to the elbow joint? the humerus the carpal bones the ulna the radius?
kari74 [83]
The bone is ulna. The ulna is a long bone found in the forearm that stretches from the elbow to the smallest finger, and when in anatomical position, is found on the medial side of the forearm. It runs parallel to the radius, the other long bone in the forearm, and is the larger and longer of the two. The radius or radial bone is one of the two large bones of the forearm, the other being the ulna. It extends from the lateral side of the elbow to the thumb side of the wrist and runs parallel to the ulna. The radius is shorter and smaller than the ulna.
7 0
3 years ago
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