sample-test

However, cell division occurs in certain tissues to replace lost cells. Unicellular organisms grow by cell division. One can easily observe this in in vitro cultures by simply counting the number of cells under the microscope. In majority of higher animals and plants, growth and reproduction are mutually exclusive events. One must remember that increase in body mass is considered as growth. Non-living objects also grow if we take increase in body mass as a criterion for growth. Mountains, boulders and sand mounds do grow. However, this kind of growth…

Unit 7 – Equilibrium

Chemical equilibria are important in numerous biological and environmental processes. For example, equilibria involving O2 molecules and the protein hemoglobin play a crucial role in the transport and delivery of O2 from our lungs to our muscles. Similar equilibria involving CO molecules and hemoglobin account for the toxicity of CO. When a liquid evaporates in a closed container, molecules with relatively higher kinetic energy escape the liquid surface into the vapour phase and number of liquid molecules from the vapour phase strike the liquid surface and are retained in the…

Common doubts about NEET preparation – Rank1NEET

Yes, it is going to be sufficient conceptually Content wise it’s going to be sufficient Questions from Outside the syllabus would come ? Well, no It’s going to be application based but this is going to be the overall syllabus Structure and the content so I would say stick to the NCERT for biology Especially it’s gonna be way way more than sufficient and if you think that something from outside may come up or something from outside has come, I would like you to know that It hasn’t really…

60 days NEET revival study plan to get back in track – Rank1NEET

Whether you are in 11 standard, whether you’re in 12 standard or you are giving your examinations repeat for the entrance. I’m going to give you a two month strategy. If you are serious with your life, if you are serious with your life goals and if you have a purpose and if you want to become something in your life, then I believe you can give yourself these two months because I hear children saying that 11th got left out, not understanding in the 12th, a lot of time…

How to prepare for neet?

How to prepare for neet? Usually people who want to pursue MBBS or BDS or people who have finished MBBS or BDS write NEET exam. It is one of the toughest National level common exam If you’re thinking ‘how to prepare for NEET Exam’, then this video’s for you What is NEET Exam? It is the National Eligibility Entrance Test If you want to pursue BDS/MBBS or want to do post graduation after that it is a Government rule that you have to write this exam It is applicable to…

Unit 1 – Some Basic Concepts of Chemistry – Exercise

Important formula Density of a substance tells us about how closely its particles are packed. If density is more, it means particles are more closely packed. Density = Mass / Volume SI unit of density = SI unit of mass/ SI unit of volume = kg / m³ or kg m-3 There are three common scales to measure temperature — °C (degree celsius), °F (degree fahrenheit) and K (kelvin). Freezing point of water 0°C Boiling point of water 100 °C The temperatures on two scales are related to each other…

6.2.2 Enthalpy, H

(a) A Useful New State Function We know that the heat absorbed at constant volume is equal to change in the internal energy i.e., ΔU = qv . But most of chemical reactions are carried out not at constant volume, but in flasks or test tubes under constant atmospheric pressure. We need to define another state function which may be suitable under these conditions. We may write equation ΔU= q + w  as  ΔU = qp  – pΔV at constant pressure, where qp is heat absorbed by the system and…