Linear Momentum Momentum is the motion contained in a body. Quantity of motion possessed by a body depends upon both of its mass and velocity. So the product of mass and velocity is the measure of the momentum,
Newton studied about motion scientifically and concluded some results which are called Newton’s laws of motion. There are three laws of motion. All three laws define force in different ways. First law defines force qualitatively, second law defines quantitatively and third law highlights that single and isolated force is not possible. Newton’s First Law of Motion According to Netwon’s first law of motion,
The dimension of a physical quantity is defined as the power to which the fundamental quantities are raised to express the physical quantity. The dimension of mass, length and time are represented as [M], [L] and [T] respectively. For example: We say that dimension of velocity are, zero in mass, 1 in length and -1 in time.
Nervous tissue is made up of millions of nerve cells called neurons. The neurons are highly specialized cells which controls and co-ordinates the body activities and forms a system called Nervous system. Nervous system consists of three types such as CNS, PNS and ANS.
Prokaryotic Cell The simplest form of cell, prokaryotic cell is also the oldest form of life on the earth. Distinctively known for the cellular structure, prokaryotic cells are those which lack membrane-bound nucleus and other cell organelles. Structure of Prokaryotic Cell Microscopic in size, prokaryotic cells are as small as mitochondria in eukaryotic cells and have diameter ranging from 0.1-10µm.
Blood is the fluid in living organism that transports oxygen and nutrients to the cells in the body. It consists of Red Blood Cells(Erythrocytes), White Blood Cells(Leukocytes) and platelets (Thrombocytes). Platelets are the part of the blood that helps to prevent blood loss through wounds by forming clot and fight off infections. 1µl (microlitre) of blood contains
Charactersistics of White Blood Cells or Leucocytes Count – The number of leucocytes per microlitre of blood is called total leucocytecount (TLC). A normal adult human consists of 5,000–10,000/mm3 of blood. Rise in WBCs count is called leucocytosis. Increased TLC shows that there is acute bacterial infection.
Prokaryotic cells are different from eukaryotic cells in many different ways. These bases of differences are clearly mentioned in the following table. Basis of Difference Prokaryotic Cells Eukaryotic Cells
Prokaryotic cells are the earliest forms of lives on the earth and simples cells which evolved nearly 3.5 billion years ago. Almost 1.5 billion later, more advanced and complex cells called eukaryotic cells evolved which make up superior organisms such as plants and animals.
Eukaryotic cell are the developed, advanced and complex forms of cells. They are the building block or smallest unit of life of organisms as simple as amoeba and protozoa to the most complicated plants and animals. Significantly bigger than the prokaryotic cells, eukaryotic cells have diameter ranging from 10µm -100µm. Inside it are various cell organelles which performs individual functions and support cell life.