The purpose of _____ is to provide separation and compartmentalization of processes in eukaryotes. (2023)

FAQs

What do eukaryotes and prokaryotes both use for mobility? ›

Another crucial flagellum is present both in prokaryotes and eukaryotes that are required for cell mobility. Flagella is a significant structure that is extended outward and helps the organism move in its required direction.

Which of the following would you not expect to see on a plasmid? Gene for cell wall synthesis.

They differ from other bacteria in that cyanobacteria possess chlorophyll-a, while most bacteria do not contain chlorophyll. Chlorophyll-a gives them their characteristic blue-green color.

Why would being infected with a flagellate such as Trypanosoma brucei be problematic for a human being? Trypanosoma brucei is only able to cause disease in tsete flies and not humans. It causes African sleeping sickness, a disease that paralyzes an estimated 35,000 people every year.

Cilia and flagella of eukaryotic cells are cylindrical organelles, which when animated, propagate waves resulting in the movement of the cells, which are free to move. In fact, when cells are not free to move, ciliary and flagellar beating results in the movement of fluid around them.

Cilia and Flagella - For single-celled eukaryotes, cilia and flagella are essential for the locomotion of individual organisms. In multicellular organisms, cilia function to move fluid or materials past an immobile cell as well as moving a cell or group of cells.

So, the correct answer is 'Origin of replication(ori)'

So, the correct answer is 'Ori site'

Thus, the correct answer is 'Single stranded.

Cyanobacteria have several defining characteristics such as being prokaryotes, nitrogen fixers, oxygen producers, and their ability to have symbiotic relationships.

Which of the following is a unique characteristic found only in bacteria? ›

Bacteria also have two additional unique features: a cell wall and flagella. Some bacteria also have a capsule outside the cell wall.

Charles Darwin understood that evolution was a slow and gradual process. By gradual, Darwin did not mean "perfectly smooth," but rather, "stepwise," with a species evolving and accumulating small variations over long periods of time until a new species was born.

Ticks, responsible for causing most vectorborne diseases in the United States and Europe, are vectors for agents causing Lyme disease, ehrlichiosis, babesiosis, anaplasmosis, Rocky Mountain spotted fever, Crimean-Congo hemorrhagic fever, and Heartland virus disease.

Trypanosoma brucei parasites successfully evade the host immune system by periodically switching the dense coat of variant surface glycoprotein (VSG) at the cell surface.

African Trypanosomiasis, also known as “sleeping sickness”, is caused by microscopic parasites of the species Trypanosoma brucei. It is transmitted by the tsetse fly (Glossina species), which is found only in sub-Saharan Africa.

The cytoskeleton provides a structural framework for the cell, serving as a scaffold that determines cell shape and the general organization of the cytoplasm. In addition to playing this structural role, the cytoskeleton is responsible for cell movements.

Microtubules guide organelle movement and are the structures that pull chromosomes to their poles during cell division. They are also the structural components of flagella and cilia.

The correct answer is flagella. The prokaryotic and eukaryotic organism flagellum has the same function located at the cell membrane.

But only the cytoskeleton fulfils all of these functions through self-assembly. There are three main types of cytoskeletal polymer: actin filaments, microtubules and a group of polymers known collectively as intermediate filaments. Together, these polymers control the shape and mechanics of eukaryotic cells (Fig.

Of all eukaryotic organelles, the nucleus is perhaps the most critical. In fact, the mere presence of a nucleus is considered one of the defining features of a eukaryotic cell. This structure is so important because it is the site at which the cell's DNA is housed and the process of interpreting it begins.

What are the main structural features of eukaryotic cells? ›

Unlike prokaryotic cells, eukaryotic cells have: 1) a membrane-bound nucleus; 2) numerous membrane-bound organelles such as the endoplasmic reticulum, Golgi apparatus, chloroplasts, mitochondria, and others; and 3) several, rod-shaped chromosomes.

The copy number of most plasmids is determined by the rate of synthesis of a rate-limiting initiator protein (Rep).

Four characteristics of plasmids make them ideal vectors: (1) the ability to replicate; (2) the ability to initiate transcription; (3) a gene or genes that code for resistance to antibiotics, a class of compounds that kill or inhibit the growth of microorganisms; and (4) the ability to be passed between bacteria.

Final answer: The sequence that controls the copy number of the linked DNA in the vector, is termed as Ori.

A plasmid contains three necessary functional regions: an origin of replication, a polylinker to clone the gene of interest (called multiple cloning site where the restriction enzymes cleave), and an antibiotic resistance gene (selectable marker).

Additionally, most plasmid vectors have: B) Genes, such as those that code for antibiotic resistance, to positively select for bacteria that harbor the plasmid (and discard those that do not).

Thus, the correct answer is 'Single stranded. '

So, the correct answer is ' Single-stranded'.

Abstract. Cyanobacteria have had a pivotal role in the history of life on Earth being the first organisms to perform oxygenic photosynthesis, which changed the atmospheric chemistry and allowed the evolution of aerobic Eukarya.

How can you differentiate the eukaryotic algae from the prokaryotic cyanobacteria by looking at them? ›

Cyanobacteria are prokaryotic organisms and do not have a membrane-bound nucleus, while algae are eukaryotic with a membrane-bound nucleus and other organelles. Algae possess organelles such as chloroplasts and mitochondria but being prokaryotic, cyanobacteria do not possess these structures.

Traits that can be valuable aids to identification are combinations of cell shape and size, gram stain reaction, acid-fast reaction, and special structures including endospores, granules, and capsules.

Eukaryotic cells contain membrane-bound organelles, such as the nucleus, while prokaryotic cells do not. Differences in cellular structure of prokaryotes and eukaryotes include the presence of mitochondria and chloroplasts, the cell wall, and the structure of chromosomal DNA.

Darwin also suggested a mechanism for evolution: natural selection, in which heritable traits that help organisms survive and reproduce become more common in a population over time.

Punctuated equilibrium is a theory that states that evolution occurs primarily through short bursts of intense speciation, followed by lengthy periods of stasis or equilibrium.

A male cayenne tick, Amblyomma cajennense, a tick species which is a North, Central, and South American carrier of Rickettsia rickettsii bacteria, which cause Rocky Mountain spotted fever.

Rocky Mountain Spotted Fever (Rickettsiosis) is a tickborne disease caused by the bacterium Rickettsia rickettsii. This organism is a cause of potentially fatal human illness in North and South America, and is transmitted to humans by the bite of infected tick species.

Trypanosoma brucei parasites successfully evade the host immune system by periodically switching the dense coat of variant surface glycoprotein (VSG) at the cell surface.

In addition to its canonical role in motility, the trypanosome flagellum is crucial for cell morphogenesis, cell division and inheritance of essential cellular structures (Figure 3), functions not widely recognized for flagella of other organisms.

Overview. Human African trypanosomiasis, also known as sleeping sickness, is a vector-borne parasitic disease. It is caused by protozoans of the genus Trypanosoma, transmitted to humans by bites of tsetse flies (glossina) which have acquired the parasites from infected humans or animals.

What is responsible for the transmission of the pathogen that causes African sleeping sickness? ›

African Trypanosomiasis, also known as “sleeping sickness”, is caused by microscopic parasites of the species Trypanosoma brucei. It is transmitted by the tsetse fly (Glossina species), which is found only in sub-Saharan Africa.

Prokaryotic cells move through liquids or over moist surfaces by swimming, swarming, gliding, twitching or floating. An impressive diversity of motility mechanisms has evolved in prokaryotes. Movement can involve surface appendages, such as flagella that spin, pili that pull and Mycoplasma 'legs' that walk.

Final answer: Ribosomes are common in both eukaryotes and prokaryotes.

Flagella are long, hairlike organelles that extend from the cell, permitting it to move. In prokaryotic cells, such as bacteria, the flagella rotate like the propeller of a motorboat. In eukaryotic cells, such as certain protozoa and sperm cells, the flagella whip about and propel the cell.

All prokaryotic and eukaryotic cells have some similar features as they both contain ribosomes, genetic material, a cytoplasm, and plasma membranes.

Nevertheless, we have shown that the eukaryotic cytoskeleton provides organelles with a mobility which is completely controlled by the eukaryotic cell.

Flagella and some pili are used for locomotion, fimbriae help the cell stick to a surface, and sex pili are used for DNA exchange.

Prokaryotic cells may compartmentalize distinct sections of their cytoplasm, utilizing proteins to complete anabolic and catabolic events in separate places, in addition to creating a chamber around themselves in the periplasmic space.

So, the correct answer is 'Ribosome'.

Both prokaryotic and eukaryotic plant cells have a cell wall.

Which of the following is true for both prokaryotic and eukaryotic protein synthesis? ›

Ribosomes are the sites of protein synthesis in both prokaryotic and eukaryotic cells.

In a eukaryotic cell, transcription occurs in the nucleus, and translation occurs in the cytoplasm. In a prokaryotic cell, transcription and translation are coupled; that is, translation begins while the mRNA is still being synthesized.

In both prokaryotes and eukaryotes, transport systems of organic solutes can be classified as passive transporters, such as channels and facilitated transporters, and active transporters, which utilize diverse energy-coupling mechanisms.

Endoplasmic reticulum, microtubules, and the Golgi apparatus are unique to eukaryotic cells, and will not be found in prokaryotes.

Like a prokaryotic cell, a eukaryotic cell has a plasma membrane, cytoplasm, and ribosomes, but a eukaryotic cell is typically larger than a prokaryotic cell, has a true nucleus (meaning its DNA is surrounded by a membrane), and has other membrane-bound organelles that allow for compartmentalization of functions.

Eukaryotic cells contain membrane-bound organelles (such as the nucleus and mitochondria), while prokaryotic cells do not. DNA in eukaryotic cells is found inside the nucleus, while DNA in prokaryotic cells is located in the cytoplasm. Eukaryotic cells are generally larger and more complex than prokaryotic cells.