Answer: Hydrosphere causes erosion of geosphere through running water and precipitation. Biosphere breaks down rock of the geosphere (plant roots), but when it comes to soil, minerals of the geosphere feed the plants. Biosphere and atmosphere interact through animal and plant respiration of oxygen and carbon dioxide.
Explanation: Hoped i Helped!
Answer:
Cell membrane or plasma membrane is the semi-permeable outer layer surrounding the components of the cell.
It is important to the cell as it provides important properties to the cell as it separates the aqueous interior of the cell from the external environment, helps in cell–cell contact, in surface recognition, signaling and transport.
The plasma membrane is made up of different types of molecules like phospholipids, proteins, cholesterol, carbohydrates providing flexibility to the layer so, the model of membrane is known as fluid mosaic model.
The primary constituent of membrane is a lipid molecule called Phospholipids which is made up of glycerol molecules attached to a phosphate group and forms a hydrophilic head while long fatty acyl chains attached to the head froms hydrophobic tails.
It is the fatty acid chains which provide hydrophobic nature to the cell membrane. These layers are arranged in the form of bilayer with head towards outside while tails inside.
Along with phospholipid membrane posses peripheral and integral proteins which helps in transport of the molecules across membrane.
Restriction endonuclease is the answer
Answer:
1. DNA polymerase
2. DNA primase
3. DNA helicase
Explanation:
DNA replication is the process whereby the genetic material gets duplicated i.e producing an identical copy of a sequence. This process requires the aid of certain enzymes that play specific functions. Some of the important enzymes include:
- DNA polymerase is the enzyme considered to be the most important because it directly adds nucleotides to the strand based on what it reads on the template strand.
- DNA helicase is the enzyme that separates the double stranded DNA molecule into two single strands that forms a structure called REPLICATION FORK.
- DNA primase is the enzyme that adds a short RNA sequence called PRIMERS to the lagging strand of DNA in order for DNA polymerase to start its nucleotide synthesis.