akshata kirpekar CELL BILOGY AND BIOTECHNOLOGY EXERCISE 1.Fill in the blanks and complete the statements. a. Methods like artificial insemination and embryo transplant are mainly used for animal husbandry. b. Stem cell research is the revolutionary event in biotechnology after cloning. c. The disease related with the synthesis of insulin is Diabetes. d. Government of India … Read more
CELL BIOLOGY AND BIOTECHNOLOGY Can you recall (Page 88) – What is cell? It is the basic structural and functional unit of life. What is tissue? Which are the functions of tissue? A group of cells having same origin, same structure and same function is called tissue. Animal tissues – Type of … Read more
Effects of Electric Current Basic Concepts – Electric charge –The physical property of matter that causes matter to experience a force when placed in an electromagnetic field. It can be positive or negative. Symbol – Q Formula – Q = It Conductors and insulators – Conductors – Substances through which charges can easily … Read more
EFFECTS OF ELECTRIC CURRENT EXERCISE 1.Tell the odd one out. Give proper explanation. 2.Fuse wire, bad conductor, rubber gloves, generator Ans. – Generator. Others restrict flow of current while generator is used to produce current. 3.Loud speaker, microphone, electric motor, magnet Ans. – Magnet. Others are devices which convert energy from one form to another … Read more
ANIMAL CLASSIFICATION Can you recall (Page 61) – Which criteria are used for classification of organisms? a. Complexity of cell structure – Prokaryotic or eukaryotic b. Complexity of body organization – Unicellular, multicellular c. Presence / absence of cell wall – Cell wall present: Plants; cell wall absent: Animals d. Mode of nutrition – Autotrophic, … Read more
GRAVITATION EXERCISE QUESTIONS 1.Study the entries in the following table and rewrite them putting the connected items in a single row. Gravitation Exercise Questions Gravitation Exercise Questions 2.Answer the following questions. a. What is the difference between mass and weight of an object. Will the mass and weight of an object on the earth … Read more
GRAVITATION – INTEXT QUESTIONS Questions on page 1 What are the effects of force acting on an object? Effects of force on an object – Moves a body at rest Cause s moving object to change its speed. Cause moving object to change its direction Change shape and size of an … Read more
GRAVITATION DIAGRAM BASED QUESTIONS 1. 2. GRAVITATION DIAGRAM BASED QUESTIONS 3. GRAVITATION DIAGRAM BASED QUESTIONS 4.Complete the flow chart: GRAVITATION DIAGRAM BASED QUESTIONS 5.Which of the following best represent force between the Sun and the Earth. 6.Observe the figure and answer the following questions. GRAVITATION DIAGRAM BASED … Read more
GRAVITATION PYQ July 19 Gravitation pyq 2 mark – Explain why value of g changes if we go inside the earth. 3 marks – An object thrown vertically upwards reaches a height of 500 m. What was its initial velocity? How long … Read more
GRAVITATION NOTES Try this textbook page 2 Tie a stone to one end of a string. Take the other end in your hand and rotate the string so that the stone moves along a circle as shown in figure 1.2 a. Are you applying any force on the stone? Yes, we are applying a force on … Read more