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

Biology

1 answer:

snow_lady [41]2 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.

You might be interested in

In cats, some are black, some are orange, and some are calico (fur that is both black and orange.) All calico cats are always fe

Snezhnost [94]

Answer:

Codominance. This is shown by the calico cats, who have both black and orange phenotypic expression; the black and orange are not mixed like incomplete dominance, and one is not entirely dominant over the other. (A common example is the roan cow, whose fur is a bit red, a bit white.)

Sex-linked inheritance. Since calico cats are said to always be female (which actually isn't entirely accurate, by the way) this means that the coat color is sex-linked. It's found on the X chromosome, so a female cat can have one X black and one X orange chromosome. This is only possible in males when they are nondisjunct and inherit two Xs along with their Y... but that's a completely different story. :)

3 0

2 years ago

What is the impact on human health as we try to stay ahead of the evolutionary process?

nignag [31]

The impact on the human health as we try to stay ahead of the evolutionary process is actually very bad. It is a fact that the humans are living much longer nowadays than ever before, with the main reasons for that being the well developed medicine and healthcare, much better standard of living, and having less riskier jobs. On the other hand, the human health, without being treated, is actually at an all time low. The immune system is much weaker than it has been, with the main reason being the isolation of the outside world and the higher level of hygiene. The allergies are becoming an ever growing problem because of this, as the immune system doesn't even recognize certain outside bodies are they an enemies or not. The constant radiation for numerous sources has caused development of numerous diseases. The old age has increased the percentage of diseases such as cancer, Alzheimer, Parkinson, or sclerosis. The less active life-style and food over saturated with fats and sugars has caused numerous health problems as well. All in all, the human health has become dependent on the pharmacy and its products, and without it it will suffer badly.

6 0

2 years ago

1. In eukaryotic flagella, the fibers that slide past one another due to the activity of dynein proteins are microtubules. 2. Ma

yulyashka [42]

Answer:

1) In eukaryotic flagella, the fibers that slide past one another due to the activity of dynein proteins are microtubules.

2) Many cell organelles, most notably the nucleus, are anchored by intermediate filaments which are assembled from a diverse class of proteins.

3) Centrosomes are sites where protein dimers assemble into microtubules.

4) The extension of pseudopodia in amoeba is due to the regulated assembly and destruction of microfilaments.

5) The only cytoskeletal fibers not associated with intracellular movement or whole cell locomotion are the intermediate filaments.

6) During muscle contractions, myosin motor proteins move across tracks of microfilaments.

Explanation:

The cytoskeleton is a very important element of the cell, and is composed of three different structures: microtubules, intermediate filaments, and microfilaments.

Microtubules are structures in the shape of hollow tubes that give shape to the cell. Microtubules also participate in cell motility by providing a route for the organelles to move through.

Intermediate filaments are the only ones that do not participate in cell motility: their main function is to provide mechanical support for the plasma membrane.

Microfilaments are a key component in cell motility, and also associate with myosin (a protein) to produce muscle contraction. Microfilaments also give the cell the ability to grow pseudopods.

4 0

3 years ago

Read 2 more answers

When precipitation falls onto land surfaces, it is either soaked into the ground or becomes runoff. Runoff is surface water that

Mazyrski [523]

D. Watershed - a watershed is the area in which runoff, rivers, and streams run into a larger body of water

7 0

2 years ago

Read 2 more answers

What researches are considered basic science

Leviafan [203]

Answer: