Sciencedoze: Science, Education and Technology

Structure of Hair 1. Cuticle The cuticle is the outermost translucent layer of the shaft of the human hair. It is smooth and flat and acts as a protective layer for the hair. The cuticle looks like fish scales or roof tiles. It is an important part of the hair that determines the hair species. 2. Cortex The cortex is the middle layer of the hair which is made up of long thin cells. It consists of long keratin filaments that are held together by disulfide and hydrogen bonds. It also contains the natural hair coloring material (pigment) which is called melanin. It provides stability, elasticity, and a unique color to the hair. 3. Medulla The medulla is the central core of the hair which is composed of soft keratin protein which may be either absent or present. If present, it may be fragmental, interrupted, or continuous. It is absent in some species and does not determine the species of hair. Characteristics of hair to determine the species, race, sex, and site 1. Color The color o...

Qualifying in one of the most challenging and toughest engineering and medical entrance exams such as JEE and NEET is a dream cherished by millions of aspirants that aim to become an engineer or a doctor. And with a huge surge in the number of applicants every year, the competition has increased manifold making it a lot harder for applicants to reach their goal. Given below are some valuable tips that can help students to prepare well and in a limited time. All they need to do is adopt a focused and prepare in the right way. 1. Focus on Exam Pattern It is imperative for students to know the exam pattern to understand the specifies of the exam paper such as number of questions, type of questions, weightage, segregation of questions as per marks,important questions, etc. Knowledge of the exam formats helps understand the structure of the exam as they can begin by attempting the questions they are familiar with, thereby saving a lot of time for difficult ones. 2. Avoid...

CBSE Boards exam are an important milestone that governs a student's life long career. Hence, it is essential that you treat it gravely and pay proper attention to the preparation of Boards. Here are some important tips that can help you prepare well and succeed with flying colors in Board examination. 1. Don't Neglect NCERT Books The syllabus of the CBSE Board Exams is completely based on the NCERT textbooks. Hence, your teachers will never test you beyond the NCERT syllabus. A detailed study of NCERT textbooks is, thus, vital as every line of the book entails important information. Studying from the NCERT is ideal for a thorough and comprehensive understanding of the concepts that can give you an edge over others and help you to score well in your exams. 2. Practice Previous Year Papers Get hold of previous year board examination papers. Solving them will help you gain an insight into the exam pattern and familiarize you with important topics. Additionally, y...