Answer;
-Simple squamous epithelium
Explanation;
-Simple squamous epithelium is the single layer of thin, flat cells that line body surfaces which are not exposed substantially abrasive forces. The primary function of the columnar cell is that secretion and absorption simple squamous epithelium a single layer flat scale shaped cells.
-Simple squamous epithelium lines the air sacs, or alveoli, of the lungs. The alveoli are sites where air is exchanged in the lungs. Simple squamous epithelial cells in the alveoli allow oxygen from the air to enter the blood in the capillaries of the lung.
Identical twins are formed through the process of meiosis where a fertilised egg separates to form two identical cells with a common genetic information.
Fraternal twins on the other hand are developed from the fertilisation of two different eggs and two sperm cells. This type of twins possess unique genetic information.
<span>1. Smooth functioning of nerves-Calcium is key in helping nerves transmit messages across cells in the body.
2. Clotting of blood-Calcium helps in the clotting function of blood
3. Aids the contraction of muscles-Our muscles make use of calcium to aid them in contracting during the course of normal muscle functions.</span>
It is indeed true. Building green can help to conserve natural resources and reduce carbon dioxide emissions The existence of plants has proven to decrease the amount of emission that exist in the air because these plants absorbs the Carbon dioxide in the air to be used in the photosynthesis process
Answer:
Nucleus
Explanation:
Humans are eukaryotic organisms. Their cells have a well-defined nucleus in which the genetic material is present in the form of chromosomes. Chromosomes have genes arranged in a linear manner. Genes represent the stretch of DNA that code for a specific protein. Being diploid organisms, humans have two complete sets of chromosomes. Therefore, each chromosome is present in pairs. These pairs are called homologous chromosomes. One chromosome of a pair comes from an egg cell and is called the maternal chromosome. The other chromosome is contributed by sperm and is called a paternal chromosome.