Answer:
The correct answer is "The ammonia is controlled with a filter that uses two type of bacteria."
Explanation:
- The Biosphere on earth is composed of all the ecosystems, while each ecosystem is composed of the abiotic and biotic components and their mutual interactions. Aquarium is an example of aquatic ecosystem.
- Abiotic components constitute the non-living part of the ecosystem.
- Biotic components constitute the living part of the ecosystem.
- In the aquarium,
- The abiotic components include the air, water, heat, minerals, sunlight, fluorescent light.
- The biotic components include the aquatic plants, aquatic animals and the bacteria (in the filter attached to the aquarium).
- These bacteria are responsible for fixing dissolved nitrogen gas present in the water of the aquarium to ammonium and are called nitrogen-fixing bacteria.
- Free living bacteria like cyanobacteria or blue-green algae are examples of nitrogen-fixing bacteria.
- Fixation of dissolved nitrogen gas to ammonium and then conversion of ammonium to nitrites and nitrates (done by other bacteria) is essential because plants (terrestrial or aquatic) can use only nitrates as the source of nitrogen for the purpose of metabolism.
Answer:
The <u>Acidophilic Microbial</u> Community has low diversity with microorganisms primarily in Leptospirillum groups II and III and from Ferroplasma types I and II.
Explanation:
An acidophilic microorganism or plant is one which grows best in acidic conditions.
They are also referred to as microorganisms which occur in acidic natural (solfataric fields, sulphuric pools) and man-made (eg. Acid mine drainage) environments.
Acidophilic Microbes otherwise known as Acidophiles are an ecologically and economically important group.
They possess networked cellular adaptations for regulating intracellular pH. Several extracellular enzymes from acidophilic microbes are known to be functional at much lower pH than that inside the cells.
Acid stable enzymes have applications in several industries such as starch, baking, fruit juice processing, animal feed and pharmaceuticals, and some of them have already been commercialized. Acidophiles are widely used in bio-leaching of metals from low grade ores
Recent studies show that acidophiles are currently being considered to be utilized in bio-conversion and bio-remediation, as well as in microbial fuel cells to generate electricity.
Acidophilic microbes of similar characteristics are classifed in groups for ease of study and identification.
Leptospirillum Group II and II as well as Ferroplasma types I and II are groups of acidophilic microorganisms within the Acidophillic Microbial community.
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Answer:
b. form of a gene
Explanation:
An allele is a variant form of a gene. Some genes have a variety of different forms, which are located at the same position, or genetic locus, on a chromosome. Genotypes are described as homozygous if there are two identical alleles at a particular locus and as heterozygous if the two alleles differ.
The introduction of the Asian Clam in Lake George is an example of an Invasive Species.
Asian Clam are small in size, hardly 1.5 inches long. However, they can reproduce very quickly without the need for a partner. A single clam can give birth to hundreds of offspring in a single day without a mate.
Asian Clam is extremely unpleasant for most fresh water bodies since it excretes nutrients such as nitrogen.
This helps in the development of algae and gives off a foul stink.
The type of cell division observed in the Figure is Meiosis. It can be deciphered by the presence of recombination between homo-logous chromosomes.
<h3>What is Meiosis?</h3>
Meiosis is a type of reductional cell division by which a cell produces four daughter cells having half of the genetic material.
Meiosis is a cell division that involves a genetic phenomenon known as recombination or crossing over.
Recombination refers to the exchange of genetic material between non-sister chromatids during Prophase I.
Learn more about meiosis here:
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