Desalination is the process. It is used to covert salt water into pure water, or fresh.
Mitosis is simply described as having four stages—prophase, metaphase, anaphase, and telophase; the steps follow one another without interruption. The entire four-stage division process averages about one hour in duration, and the period between cell divisions, called interphase or interkinesis, varies greatly but is considerably longer.
During interphase the chromosomes are dispersed in the nucleus and appear as a network of long, thin threads or filaments, called the chromatin. At some point before prophase begins, the chromosomes replicate themselves to form pairs of identical sister chromosomes, or chromatids; the deoxyribose nucleic acid (DNA) of the chromosomes is synthesized only during interphase, not while mitosis is in process.
During prophase the two chromatids remain attached to one another at a region called the centromere, but each contracts into a compact tightly coiled body; the nucleolus and, in most cases, the nuclear envelope break down and disappear. Also during prophase the spindle begins to form. In animal cells the centrioles separate and move apart, and radiating bundles of fibers, called asters, appear around them. Some sets of fiber run from one centriole to the other; these are the spindle fibers. In plant cells the spindle forms without centrioles.
During metaphase the chromosomes congregate at a plane midway between the two ends to which the spindle tapers. This is called the equatorial plane and marks the point where the whole cell will divide when nuclear division is completed; the ends of the spindle are the poles to which the chromatids will migrate. The chromatids are attached to the spindle fibers at the centromeres.
During anaphase the two chromatids of each chromosome separate and move to opposite poles, as if pulled along the spindle fibers by the centromeres. During telophase new nuclear envelopes form around the two groups of daughter chromosomes (as they are now called), the new nucleoli begin to appear, and eventually, as the formation of the two daughter nuclei is completed, the spindle fibers disappear. The chromosomes uncoil to assume their dispersed distribution within the interphased nucleus. Cytokinesis, which may begin before or after mitosis is completed, finally separates the daughter nuclei into two new individual daughter cells.
A considerable variance in the degree and timing of these stages exists across species, and cells can be classified by their mitotic characteristics. Despite the relative ease of observation of the physical stages of mitosis under the microscope (primarily because the chromosomes stain readily when in their coiled state), the exact chemical and kinetic nature of mitosis is not yet fully understood. For instance, the spindle has been determined to consist largely of thin, elongate tubules called microtubules, but their functions have yet to be understood.
The function of the turbine in a nuclearreactor is to circulate the water to the reactor after energy is removed from it to produce electricity. The correct option is A.
A nuclearreactor is a gadget used to initiate as well as control a fission nuclear chain reaction or nuclear fusion interactions.
Nuclear reactors are employed in nuclear powerplants for electricity generation as well as in nuclear marinepropulsion.
A nuclear reactor, or power plant, is a sequence of machines that can control nuclear fission to generatepower. Pellets of the element uranium are used as fuel in nuclear reactors to produce nuclearfission.
The heat generated in the reactor core by nuclear fission is used to boil water into steam, which turns the blades of a steam turbine. As the turbine blades turn, they drive generators that make electricity.
Thus, the correct option is A.
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Answer:
The heat produced during nuclear fission in the reactor core is used to boil water into steam, which turns the blades of a steam turbine. As the turbine blades turn, they drive generators that make electricity.
Explanation:
Your lac operon is expressed.
You have not consumed lactose from dairy recently,
None of the above.
Answer:
You have not consumed lactose from dairy recently
Explanation:
According to the diagram, there is a represssor element in the regulatory region of the operon. This repressor is blocking the RNA polymerase, that is bound to its promoter region upstream of the genes, from transcription. The repressor is mostly the lac repressor that switches of the operon in the absence of lactose.
B.bone cells only
C.skeletal muscle cells only
D.skin,bone,and skeletal muscle cells
Answer: None of these options.
Hope it helps!!
Explanation: Skeletal muscles are made up of connective tissue, blood vessels and nerves. they help in the movement of the body parts, protect the bones and joints also provide skeletal stability. In reality theses cells never divide. The myoblasts divide at the embroyonic stage and these are formed. When damaged the missing tissue is filled by adding new proteins and enlarging. So in reality they so not divide so no option fits here.
During S phase, DNA replication occur during the cell cycle for each daughter cell to receive a complete copy of DNA.
A cell'sgrowth and division are accompanied by a sequence of processes known as a cellcycle.
A cell spends the majority of its time in what is known as interphase, where it develops, duplicates its chromosomes, and gets ready to divide. The cell then exits interphase, goes through mitosis, and finishes dividing.
Following this, the celldivides into two daughter cells, distributing one copy of the duplicated material to each. When each daughter cell has its own outer membrane around it, the cell cycle is finished.
Genetically speaking, the parentcell, together with the two brand-new daughter cells, are all the same.
Prior to mitosis and cell division, DNA replication takes place during the S phase (also known as the Synthesis phase) of the cell cycle.
Thus, the DNA replication occur during Sphase of the cell cycle.
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Answer:DNA replication occur in mitosis process at( S-synthesis) interphase stage
In multicellular organism