Name the structural and function unit of all life forms - Cell
☞: Who discovered cell - Robert Hooke
☞: Who discovered nucleus of the cell - Robert Brown
☞: Cells are made up of __________ - Protoplasm
☞: Outer covering of a cell is called ________ and it is made up of _________ - Plasma, lipids & proteins
☞: Nucleus and cytoplasm are contained in _________of the cell - Cell Membrane
☞: Which part of the cell is its controlling centre - Nucleus
☞: What does DNA contain? - Genetic Information that is passed from one generation to another
☞: What does RNA contain? - It is genetic carrier of some microorganisms (e.g. HIV)
☞: What is the main component of cell wall in case of plant cells? - Cellulose
☞: Which part of the cell is also known as digestive bag?- Lysosomes
☞: __________ is known as "powerhouse of the cell"- Mitochondria
☞: What are protein made of? - Amino Acid
☞: Name the vitamins that are water soluble and that are fat soluble? - A,D,E,K are fat soluble and B,C are water soluble
☞: Name the vitamin that is important for blood coagulation - Vitamin K
☞: What kind of disease is malaria? - Malaria is a protozoan disease caused by protozoan parasite plasmodium.
☞: Name the plant tissues responsible for transportation of water and food in plants- Xylem transports water and Phloem transport food.
☞: What are cartilage, blood, bones, tendons and ligaments?- Connective Tissues
☞: Why is Blood Red in Color? - Due to the presence of RBC's that contain red colored pigment called Haemoglobin.
☞: What is the role of WBC's ? - WBC's contain Antibodies that protect human body from infections.
☞: Where are blood cells manufactured? - In bone marrow from stem cells
☞: Name two nitrogen fixation bacteria- Azotobacter and rhizobium
☞: The branch of biology under which the living organisms and their relation with their surroundings is studied is known as - Ecology
☞: Promotion of algae in a water body due to the increase in amount of falling industrial and sewage water decreases the BOD of water and depletes the dissolved oxygen is called - Eutrophication.
☞: What is BOD? -Biochemical oxygen Demand also called Biological oxygen demand is the amount of dissolved oxygen needed by aerobic biological organisms to break down organic material present in a given water sample at certain temperature over a specific time period.
☞: Why is EEG(Electro Encephalo Gram) used? - It detects electrical activity in your brain using small, flat metal discs (electrodes) attached to your scalp.
☞: Which glands are also known as Ductless Glands? - Endocrine
☞: Largest bone in Human Body - FEMUR
☞: Shortest bone in Human Body - STAPES or STIRRUL Bone (in the middle ear)
☞: The gland which is both endocrine as well as exocrine - Pancreas
Multiple Choice Question 1. Which statement is true for Gauss law ? (a) All the charges whether inside or outside the Gaussian surface contribute to the electric flux. (b) Electric flux depends upon the geometry of the Gaussian surface. (c) Gauss theorem can be applied to non-uniform electric field. (d) The electric field over the Gaussian surface remains continuous and uniform at every point. Ans. (d) The electric field over the Gaussian surface remains continuous and uniform at every point. 2. An electric dipole placed in a non-uniform electric field can experience. (a) a force but not a torque. (b) a torque but not a force. (c) always a force and a torque. (d) neither a force nor a torque. Ans. (c) always a force and a torque. 3. Some charge is being given to a conductor. then, its potential (a) is maximum at surface. (b) is maximum at centre. (c) remains the same throughout the conductor. (d) is maximum somewhere between surface and centre. Ans. (c) remains the sam...