- What is Plasmolysis of a plant cell?
- What is the use of Plasmolysis?
- What happens when a plant cell is kept in hypertonic solution?
- How would I know that Plasmolysis has occurred if I am observing a plant cell?
- What are the five difference between plant cell and animal cell?
- Is the solid or gel-like substance that surrounds a typical cell?
- What are the only prokaryotes?
- Where do proteins made by free ribosomes go?
- What type of proteins do ribosomes make?
- What type of proteins are made by bound ribosomes?
- Is ribosome membrane bound or not?
- Where can ribosomes be located?
- What is the anticodon for tRNA?
What is Plasmolysis of a plant cell?
Plasmolysis is the process of shrinkage or contraction of the protoplasm of a plant cell as a result of loss of water from the cell. Plasmolysis is one of the results of osmosis and occurs very rarely in nature, but it happens in some extreme conditions.
What is the use of Plasmolysis?
In basic biology courses, plasmolysis is used to demonstrate plant cell turgor and its relation to the mechanical rigidity of plant organs. During plasmolysis, the plasma membrane is separated from the cell wall, and this process is easily demonstrated.
What happens when a plant cell is kept in hypertonic solution?
If you place an animal or a plant cell in a hypertonic solution, the cell shrinks, because it loses water ( water moves from a higher concentration inside the cell to a lower concentration outside ). A single animal cell ( like a red blood cell) placed in a hypotonic solution will fill up with water and then burst.
How would I know that Plasmolysis has occurred if I am observing a plant cell?
Spend a few minutes observing the cells. If you added enough salt solution, you should see that the cytoplasm and cell membranes have pulled away from the cell walls. This process is known as plasmolysis and only occurs in plant cells.
What are the five difference between plant cell and animal cell?
A plant cell contains a large, singular vacuole that is used for storage and maintaining the shape of the cell. In contrast, animal cells have many, smaller vacuoles. Plant cells have a cell wall, as well as a cell membrane. Animal cells simply have a cell membrane, but no cell wall.
Is the solid or gel-like substance that surrounds a typical cell?
The gel-like material within the cell membrane is referred to as the cytoplasm. It is a fluid matrix, the cytosol, which consists of 80% to 90% water, salts, organic molecules and many enzymes that catalyze reactions, along with dissolved substances such as proteins and nutrients.
What are the only prokaryotes?
Bacteria and Archaea are the only prokaryotes. Organisms with eukaryotic cells are called eukaryotes.
Where do proteins made by free ribosomes go?
Proteins synthesized on free ribosomes either remain in the cytosol or are transported to the nucleus, mitochondria, (more…)
What type of proteins do ribosomes make?
Ribosomes are made up of ribosomal proteins and ribosomal RNA (rRNA). In prokaryotes, ribosomes are roughly 40 percent protein and 60 percent rRNA. In eukaryotes, ribosomes are about half protein and half rRNA.
What type of proteins are made by bound ribosomes?
In eukaryotic cells, it is generally accepted that protein synthesis is compartmentalized; soluble proteins are synthesized on free ribosomes, whereas secretory and membrane proteins are synthesized on endoplasmic reticulum (ER)-bound ribosomes.
Is ribosome membrane bound or not?
Ribosomes are not membrane bound. Ribosomes are composed of two subunits, one large and one small, that only bind together during protein synthesis.
Where can ribosomes be located?
What is the anticodon for tRNA?
An anticodon is a trinucleotide sequence complementary to that of a corresponding codon in a messenger RNA (mRNA) sequence. An anticodon is found at one end of a transfer RNA (tRNA) molecule.