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Anestetic [448]
3 years ago
12

Summarize the structure and function of the cytoskeleton.

Biology
1 answer:
Alexxandr [17]3 years ago
4 0

Answer:

The cytoskeleton is a network of fibers that forms the "infrastructure" of eukaryotic cells, prokaryotic cells, and archaea. In eukaryotic cells, these fibers consist of a complex network of protein filaments and motor proteins that help move cells and stabilize the cell.

Explanation:

Function:

It helps the cell maintain its shape and provides support to the cell.

Various cellular organelles are held in place by the cytoskeleton.

It helps in the formation of vacuoles.

The cytoskeleton does not represent a static structure but is able to disassemble and assemble its parts in order to enable the internal and overall mobility of the cell.

The cytoskeleton contributes to cell migration because cell motility is required for tissue construction and repair.

The cytoskeleton helps transport communication signals between cells.

In some cells, it creates cell bulges, such as cilia and flagella.

Cytoskeletal structure :

The cytoskeleton is composed of at least three different types of fibers: microtubules, microfilaments, and middle filaments.

These fibers differ in their size, and the microtubules are the smallest and the microfilaments are the thinnest.

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Under what conditions does the trp repressor block transcription of the trp operon? (A) when the repressor binds to the inducer
Brilliant_brown [7]

The trp repressor blocks transcription of the trp operon (B) when the repressor binds to tryptophan.

trp operon or the tryptophan operon codes enzymes for the amino acid tryptophan. The operon is on when the tryptophan is low in amount whereas the operon is off when the tryptophan is low in amount. The operon is an assimilation of five genes.

Repressor is a small protein that is supposed to prevent the synthesis of proteins. It does so binding to the operator gene. Therefore, presence or absence of repressor is a determining factor for an operon to be on or off.

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6 0
1 year ago
The middle pleistocene and the late pleistocene correspond to which cultural periods?
Crank

The middle stone age and the later stone age corresponds to the middle and the late pleistocene.

Cultural evolution during the middle and the late pleistocene :-

In southwestern Asia as well as northern and southern Africa, personal ornaments in the form of perforated seashells are recorded from the early Late Pleistocene. In the Old World, Neanderthals and anatomically modern humans are linked to a range of personal ornamentation by about 40,000 years ago (Ka). These include fully created ornaments as well as organically modified things. The appearance of figurative art, mythical imagery, and other types of items, like as musical instruments, at various times in history suggest that completely modern behavior began to emerge more gradually towards the middle of the Late Pleistocene and most definitely no later than 40 Ka. Many, but not all, of the lengthy and rigorous history of study might well have helped to the relevant data come from Europe.

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7 0
2 years ago
How many sperm cells are formed from an original cell in a Drosophila fruit fly at the conclusion of meiosis?
julsineya [31]

Answer:

C. Four Haploid Sperm Cells

Explanation:

Meiosis is a cell division measure that creates four haploid cells (gametes) from a solitary diploid germline cell. In males, meiosis is essential for spermatogenesis, the cycle to produce sperm. Sperm are the haploid cells that are produced in meiosis.  

Meiosis is a profoundly moderated cell division measure in eukaryotes that produces 4 cells (gametes) from a solitary cell (mother). Nonetheless, Nondisjunction in the male of Drosophila causes much of the time sperm with an addition or loss of chromosomes.

5 0
3 years ago
Why describes the basic structure of a fatty acid?
dalvyx [7]

A long carbon and hydrogen chain and a carboxyl group.

In images of fatty acids (the monomers of Lipids), it is depicted as a long carbon chain with hydrogen on the ends and connected to them as well, yet on the clear side is the carboxyl group.

Hope this helps!

4 0
3 years ago
The process by which organisms with traits well suited to an environment survive and to produce offspring is
Ivan
''' offspring is called
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3 0
3 years ago
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