A material can undergo either a chemical change, physical change, or sometimes both. The key differences between chemical and physical change are seen in terms of visible variation in forms. …
Salivary glands are the exocrine glands located in the mouth. They are the organs of the digestive system. If you notice a few patterns in your mouth, you will find …
The polymerase chain reaction, or PCR, was originally developed by Kary Mullis, for which he was awarded the Nobel Prize in 1993. PCR is a laboratory technique that is used …
Bacteria are broadly classified as gram-positive and gram-negative bacteria based on gram stain. But both the groups are Prokaryotic cells similar in many aspects. Check the similarities at the end …
Anatomy is the science that deals with studying the internal structure of a body. The word anatomy comes from the Greek word anatome, meaning cutting up. The term dissection is …
The primary function of the nervous system is the transmission of signals and communication. This is achieved through transmission through synapses. A neuron is the structural and functional unit of …
The anatomy of a cockroach can be viewed as the external and the internal anatomy. It is an insect and its structure is similar to most other insects. Cockroach Anatomy …
The circulatory system is one of the most important organ systems of our body. It is essential for the transport of gases, nutrients, hormones, etc. within the body. It is …
A male gamete (sperm) fuses with a female gamete (ovum or egg) to produce a zygote that develops into an individual. But humans are diploid while gametes are haploid. So …
An antigen is an agent present on the foreign cells, which the immune system recognizes. It is an immunogenic portion present on the foreign cell or substance. These antigens are …
