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ahrayia [7]
3 years ago
5

Which one of the following is NOT an example of microbial antagonism?

Biology
1 answer:
snow_lady [41]3 years ago
7 0

Answer:

e. bacteria producing vitamin K

Explanation:

Microbial antagonism basically refers as microbes versus microbes i-e the indigenous microflora serve a beneficial role by preventing other microbes from becoming established in or colonizing a particular anatomic location in the body.

As all the options mentioned, refers to the microbial antagonism except option E as the normal microbes protect the host by :

1) Producing acids.

2) Bactreocin production

3) By occupying the niches that the pathogens may occupy.

But the microbes cant compete with other microbes by  producing vitamins and growth factors that can be utilized by the host.

Hence option E is the right answer.

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This evidence supports the claim that some emotional reactions may occur without conscious thinking.
Thalamus is a small brain area located above the brain stem, with the main function of sending motor and sensory signals from the spinal cord and the mid-brain structures to the cerebral cortex.

Amygdala is a small brain region, which is part of the limbic system. It is considered the emotional control centre of the brain since it regulates emotions, survival instincts and some memory functions.

It has been proven that visual input is directly sent by the thalamus to the amygdala, which can trigger some emotional responses (such as fear) without any conscious processing.
4 0
3 years ago
What is the role of glucose in catabolite repression? What is the role of glucose in catabolite repression?
Ierofanga [76]

Answer:

It decreases the levels of cAMP in the cell, repressing transcription from the lac operon.

Explanation:

When glucose is absent, cAMP serves as coactivator binds to CRP, the catabolite gene activator protein. The CRP-cAMP complex binds to the site near the lac promoter and stimulates the expression of the operon by RNA polymerase many folds.

Catabolite repression refers to inhibition of the synthesis of enzymes of lactose catabolism when glucose is present as an energy source. In the presence of glucose, synthesis of cAMP is inhibited resulting in its lower cellular concentration. The lower cAMP levels do not allow the binding of cAMP and CRP. The result is reduced expressed of lac operon.

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3 years ago
How does the shape of an enzyme affect the reaction
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The shape of the enzyme determines which chemical reaction it will speed up.May strain the bonds of the substrate or put chemical groups of the active site in the correct position to speed up the reaction.

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How can the use of biotechnology lead to an increase in soil conservation practices?
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