Answer:
The alleles I a and I b are the alleles that works for identifying unique antigen.
Explanation:
These alleles are generally found as deposition on the surface of the red blood cells. Again, these antigens are different form made from one protein. The Ia and I b alleles are found to be co-dominant and allele i is recessive. In human beings three different alleles are there, Ia, I b and I. The alleles are nothing, but a form of gene. Many genes are there having different function but are present in the same position. Humans are diploid, hence have two allele, each from one parent it has been inherited.
Answer:
Nervous: carries messages
muscular: moves the body
epithelium: found in cartilage
connective: found in cartilage
Explanation:
In simple terms, Cell Theory can be expressed as living organisms are composed and consists of cells and it arises from the surviving cells (existing cells).
<u>Explanation:</u>
Cell Theory:
- The term "Cell Theory" has created an impact in the biology field and it is now confirmed that cell provides the basic structure to the living organisms and Robert Hooke started doing researching about the cells.
Principles of cell theory:
The three principles to the cell theory are listed here,
- All organisms are made up of one or more cells.
- Cells arise from other cells.
- The Cell is the fundamental unit of structure and organization.
Contribution to Cell Theory:
- Schwann and Schleiden are the two scientists who discovered lots of information about the cells and they have contributed lots to cell theory.
- Schleiden states that every part of plants are consists of cells and he states that cells were done by the crystallization process.
- Schwann states that every part of plants and animals were consists of cells.
- Based on their contribution postulates of cell theory has been proposed.
<u>Types of cells:</u>
The cells are classified as Eukaryotes Cell and Prokaryotes Cell
- Presence of Mitochondria
- Presence of Cytoskeleton
- Presence of Membrane-bound Nucleus
Examples: Animals and plants
- Absence of Mitochondria
- Absence of Cytoskeleton
- Absence of Membrane-bound Nucleus
Examples: Bacteria