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Rzqust [24]
3 years ago
12

Scientists have created genetically modified organisms (GMOs) by isolating and then transferring the jellyfish gene for green fl

uorescent protein into pigs, bacteria, plants, and mice. The result was bioluminescent organisms! These experiments demonstrate that_______.
Biology
1 answer:
ikadub [295]3 years ago
8 0

Answer:

The correct answer will be- genes can be transferred among species

Explanation:

Green fluorescent protein or GFP is a protein which is naturally expressed in a jellyfish called <em>Aequorea victoria</em>. The protein absorbs the light and emits it in green color.

Scientist isolated the gene of the protein from the jellyfish in the 1960s and transferred it to the genes of the other species like bacteria or mice. This shows that although the species can be isolated from the reproduction by reproductive barriers but the molecule containing code of life can be transferred easily without any barrier.

Thus, genes can be transferred among species is the correct answer.

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When the resident microbiota prevents the establishment of a pathogen, it is called _______.
Ksju [112]

Microbial antagonism is the inhibition of pathogens growth by antagonist microbiota. When the resident microbiota prevents the establishment of a pathogen, it is called <u>Microbial antagonism</u>.

<h3>What are antagonist microbiota?</h3>

Antagonist microbiota are the organisms, like bacteria or fungi, capable of acting as a biological control to avoid other pathogenic agents' establishment.

These organisms share three characteristics,

a) capability to quickly colonize a new surface and effectively persist on it

b) better ability than the pathogen to get nutrients

c) the capability of surviving under different environmental conditions.

These antagonists are

  • genetically stable,
  • their nutritious requirements are not demanding,
  • they are capable of surviving under adverse environmental conditions,
  • they have a high reproductive capability, and
  • are not pathogenic to their host.

The mechanisms these antagonists use to inhibit the pathogen growth and establishment are among others, antibiosis, competition for resources, lytic enzyme production, and parasitism.

When the resident microbiota prevents the establishment of a pathogen, it is called _<u>microbial antagonism</u>_.

You can learn more about microbial antagonism at

brainly.com/question/13955083

brainly.com/question/14637762

brainly.com/question/21799278

#SPJ1

3 0
1 year ago
Describe how cancer cells are different from other cells. Based on that, explain why cancer is so hard to cure.
Juli2301 [7.4K]
Cancer cells are cells that basically bypass any sort of regulatory processes in the cell cycle (and mitosis - the splitting of the cell). This leads to uncontrollable cell growth/duplication which hence leads to more and more cancerous cells. Cancer itself is so hard to cure for a couple of different reasons. If the cells are in the form of a benign tumor, that is a tumor that does not spread from its original infected tissue, it should be "easy" to remove with surgery. However, if it metastasizes, or spreads into surrounding tissues through the lymph or blood systems, then it becomes even harder to remove because of its far reach and complex structure. Also, cancer cells can be simply described as normal body cells that have gone rogue. That being said, things such as antibiotics, that are designed to get rid of foreign bodies, cannot get rid of cancerous cells without getting rid of most of your regular body cells as well simply because they cannot tell the difference.

Hope this helps :) 
5 0
3 years ago
A commensal bacterium?
Otrada [13]

Answer

Commensal bacteria stimulate the immune system of the host to enhance defense mechanisms that block pathogen entrance and colonization.  Moreover, by creating antimicrobial properties and signals & fighting with other bacteria for food and attachment sites, such bacteria might effectively limit the spread of respiratory infections. In healthy animals, the majority of commensal bacteria live inside the intestine's lumen, although some are also found in immediate contact with the intestinal epithelium. New studies have shown that commensal bacteria may live in stable stomach lymphoid tissues. But every once in a while, especially when they travel to other areas and leave their natural habitat, these commensal bacteria might cause illness. In both old and very and also in young persons, it can spread throughout the rest of the body, causing pneumonia, infection, and meningitis.

You can learn more about commensal bacterium from the following link:

brainly.com/question/28474277

#SPJ4

6 0
1 year ago
____________ is a severe systemic allergic reaction characterized by bronchoconstriction, hypotension, and shock.
GaryK [48]
Anaphylaxis is <span>a severe systemic allergic reaction characterized by bronchoconstriction, hypotension, and shock.</span>
6 0
3 years ago
In Wisconsin, a very large population of lake trout, in which individuals mate at random, experiences no migration, mutations, n
Pavlova-9 [17]
In this kind of population, the make up of the population's gene pool will remain virtually the same as long as these conditions hold. In this kind of situation, no evolution can take place, all thing will remain the same. For evolution to occur, competition must exist.
6 0
3 years ago
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