The double layers of cell membranes is made up of PHOSPHOLIPIDS.
The cell membrane, also called plasma membrane is made up of double layers of phospholipids. Phospholipid is a type of lipid, which is made up of two parts, an hydrophillic head and a hydrophobic tail. The hydrophillic head is made up of phosphate and glyerol while the hydrophobic tail is made up of fatty acids. The double layer of phospholipids serves as a barrier that allows only certain substances to enter into the cells.
The double layer of a cell membrane is made up of phospholipids. These molecules form a phospholipid bilayer, where their hydrophilic (water-attracting) heads face outward and their hydrophobic (water-repelling) tails face inward, maintaining the cell's structural integrity and controlling substance passage.
The type of molecule that makes up the double layer of a cell membrane is called a phospholipid. Phospholipids are a type of lipid molecule that is a primary component of all cell membranes. They are structured with a glycerol backbone, two fatty acid chains which are hydrophobic (water-repelling), and a phosphate group which is hydrophilic (water-attracting). In the cell membrane, these phospholipids align themselves into two parallel layers, known as a phospholipid bilayer, with the hydrophobic tails facing inward and the hydrophilic heads facing outward. This molecular arrangement allows the cell to maintain its structural integrity while also controlling the passage of substances in and out of the cell.
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Answer:
um whats ur question, tell me on comments
Explanation:
(its actually 8 points)
Answer: Okay what is the question?
Explanation:
a pioneer species.
an invasive species.
a cooperative species.
a hybrid species.
The correct answer is option B
The mammals are further classified into groups in terms of development of the offspring. There are various types of mammals that development in different way.
Placental Mammals:
The embryo grows inside the body of the mother by the help of placenta which aids in the nourishment of the embryo. After birth, the mother cares for the young ones.
Marsupials:
They lack placenta and in place of placenta they have marsupium that provides nourishment to the young ones after birth. This is a pouch found in the body of the mother which acts as the protective covering of the embryo in which further development of the young ones takes place.
Monotremes:
These kind of mammals lay eggs, eggs are hatched and the young ones lick the milk from the abdomen of the mother.
Answer:
Most tissues of the body grow by increasing their cell number, but this growth is highly regulated to maintain a balance between different tissues. In adults most cell division is involved in tissue renewal rather than growth, many types of cells undergoing continuous replacement.
The multiplying of cells helps the body to either fight diseases or to keep up with the growth of adolescents all the way to adults.
Explanation:
Hope that helps
Every living thing is made up of cells. If cells did not exist, there would be no life.
c. autonomic peripheral nervous system
b. central nervous system
d. none of the above