What protects a prokaryotic cell from injury?
What protects a prokaryotic cell from injury?
What protects a prokaryotic cell from injury? The cell wall protects it.
What prevents prokaryotes from drying?
Many prokaryotes have a sticky outermost layer called the capsule, which is usually made of polysaccharides (sugar polymers). The capsule helps prokaryotes cling to each other and to various surfaces in their environment, and also helps prevent the cell from drying out.
How does a prokaryotic type cell become antibacterial resistant?
There are two main ways that bacterial cells can acquire antibiotic resistance. One is through mutations that occur in the DNA of the cell during replication. The other way that bacteria acquire resistance is through horizontal gene transfer.
What does the simplicity of prokaryotic cells prevent them from doing?
The simplicity of prokaryotic cells prevents them from specialization and differentiation. This is the correct answer. Many prokaryotes are equipped with flagella and can move freely in the environment. Cellular nutrients are produced by enzymes and various organelles.
How do decomposers help the ecosystem recycle nutrients when a tree dies?
How do decomposers help the ecosystem recycle nutrients when a tree dies? They feed on and digest the dead tissue, breaking it down into its raw materials, which are released back into the enviroment.
What are the benefits of prokaryotes?
Prokaryotes have the advantages associated with greater simplicity, including more rapid reproduction, rapid mutation and adaptation to new environments, and more diverse metabolic systems. They also possess an ability to pass on adaptive genes to other bacteria in the form of plasmids.
What does prokaryotic cells lack?
Prokaryotes are organisms whose cells lack a nucleus and other organelles. The absence of a nucleus and other membrane-bound organelles differentiates prokaryotes from another class of organisms called eukaryotes.
How do prokaryotic cells function without organelles?
Prokaryotic cells contain a single compartment enclosed within the cell membrane. In this space reside DNA, RNA, ribosomes and other molecules. Since there are no organelles to be transported in prokaryotic cells, such a function is unnecessary. Like the eukaryote cell, the prokaryote cell is filled with cytosol.
How do organisms become resistant?
Bacteria develop resistance mechanisms by using instructions provided by their DNA. Often, resistance genes are found within plasmids, small pieces of DNA that carry genetic instructions from one germ to another. This means that some bacteria can share their DNA and make other germs become resistant.
How can prokaryotic cells be smaller than eukaryotic cells and still carry on all the functions of life?
How can prokaryotic cells be smaller than eukaryotic cells and still carry on all the functions of life? Prokaryotic cells have a good surface area to volume ratio. All of their chemical activity occurs in the cytoplasm and cell membrane. They have all they need at this minimal functional level.
Why do prokaryotes have walls outside the cell membrane?
These ancestral cells reproduce by means of binary fission, duplicating their genetic material and then essentially splitting to form two daughter cells identical to the parent. A wall located outside the cell membrane provides the cell support, and protection against mechanical stress or damage from osmotic rupture and lysis.
How are prokaryotes beneficial to humans and other organisms?
Fortunately, only a few species of prokaryotes are pathogenic! Prokaryotes also interact with humans and other organisms in a number of ways that are beneficial. For example, prokaryotes are major participants in the carbon and nitrogen cycles.
How are bacteria and archaea different from prokaryotes?
The Prokaryotic Cell. The composition of the cell wall differs significantly between the domains Bacteria and Archaea, the two domains of life into which prokaryotes are divided. The composition of their cell walls also differs from the eukaryotic cell walls found in plants (cellulose) or fungi and insects (chitin).
How are prokaryotes used to remove pollutants?
Microbial bioremediation is the use of prokaryotes (or microbial metabolism) to remove pollutants. Bioremediation has been used to remove agricultural chemicals (e.g., pesticides, fertilizers) that leach from soil into groundwater and the subsurface.