A portal of entry<span> is the site through which micro-organisms enter the susceptible host and cause disease/infection. Infectious agents enter the body through various </span>portals<span>, including the mucous membranes, the skin, the respiratory and the gastrointestinal tracts.</span>
Answer:
There are different types of proteins present which are made of amino acid sub-units. Proteins play various important functions in an organism's body. Some of these functions are:
- Growth and maintenance of cells and individuals.
- Antibodies are proteins which provide immunity.
- Enzymes are proteins which catalyze different reactions.
- Many proteins allow movement of substances inside and outside of the cell membrane. They are known as carrier proteins.
- Many proteins serve as structural proteins.
Answer:The extent of variety in the genetic information in the population of offspring.
Explanation:C is correct
If this answers your question:
Disaccharides are formed when 2 sugar molecules combine. An example of this is Maltose
Answer:
The earth moves two ways. It spins and it moves around the sun. The spinning of the earth is called rotation. It takes the earth abut 24 hours, or one day, to make one complete rotation.
Explanation:
The earth moves two ways. It spins and it moves around the sun. The spinning of the earth is called rotation. It takes the earth abut 24 hours, or one day, to make one complete rotation.
