Biology Quiz 26 - How well do you understand health?
Understand its definition and learn more about the different dimensions of health.
Blog provides NCERT solutions, CBSE, NTSE, Olympiad study material, model test papers, important Questions and Answers asked in CBSE examinations. References to Educational Sites and resources.
Understand its definition and learn more about the different dimensions of health.
CONTEMPORARY WORLD POLITICS
IMPORTANT KEYWORDS
Egalitarian society -
It believes that all people are equally important and should have the same rights and opportunities in life.
Soviet System –
Soviet System was introduced after Russian revolution in 1917 based on the principles of egalitarian society and planned economy controlled by the state.
Q1: The increasing number of vehicles on the city roads not only causes inconvenience to the people but also affects the health of millions of people. Write a letter to the Editor of an esteemed daily, giving your suggestions regarding checking the number of vehicles on roads. You are Rahul/Rubina of Bengaluru.
Subject: Increasing number of vehicles on the city roads
Class 11 Biology
Ion movement and gradients play an important role in diffusion and osmosis in plasma membranes.
Ion movement and gradients can affect the rates of diffusion and osmosis in plasma membranes. For example, if the concentration of ions on one side of the membrane is increased, the rate of diffusion of those ions will decrease. This is because the ions will be more likely to collide with each other and with the membrane, which will slow them down. Similarly, if the concentration of water on one side of the membrane is increased, the rate of osmosis will decrease. This is because the water molecules will be more likely to collide with each other and with the membrane, which will slow them down.
Ion movement and gradients are also important for the maintenance of the resting membrane potential. The resting membrane potential is a difference in electrical charge between the inside and outside of a cell. This difference in charge is created by the unequal distribution of ions across the membrane. The concentration of sodium ions is higher outside the cell, while the concentration of potassium ions is higher inside the cell. This difference in ion concentration creates an electrical gradient across the membrane. The resting membrane potential is important for a variety of cell functions, including cell signaling and cell division.
MCQs
Q1. With reference to Hooper, the author says, "Every thing was going for him", What does it imply?
(i) He had everything that a man aspires for.
(ii) People admired him.
(iii) He did what he wanted.
(iv) He was capable of playing games.
"Mrs Packletide's Tiger" by H.H. Munro (also known as Saki) is a satirical short story that was first published in 1924. The story takes place in India and revolves around Mrs Packletide, a wealthy and ambitious woman who desires to gain social recognition by shooting a tiger.
MCQS
Q1. The grandmother could relate to the central character of the story 'Kashi Yatre' as __________.
(i) both were old and uneducated
(ii) both had granddaughters who read to them
(iii) both had a strong desire to visit Kashi
(iv) both were determined to learn to read
Class 10 is a crucial turning point in a student's academic career, and passing the CBSE exams depends on possessing the correct reference books.
When choosing science books for standard 10 students, it is important to consider a few key factors, including the level of difficulty, relevance to the curriculum, and engagement level. Here are some tips to help you choose the best science books for standard 10 students:
Answer the following questions in 30-40 words each:
Q1. What traits of the Garoghlanian tribe are highlighted in the story?
Q2. Why did the narrator refer to his “good old days” in the beginning of the story?
Q3. How did the narrator react on seeing the horse and Mourad?
Q4. What two character-traits of Mourad are hinted at by the narrator in the initial part of the story?
Question: What are different types of chemical reactions?
Answer:
There are several different types of chemical reactions, including:
Q1. What is database?
Answer: A database is an organized collection of data. The data are typically organized to model aspects of reality in a way that supports processes requiring this information. The term "database" can both refer to the data themselves or to the database management system.
Study the following case study and answer the questions given below:
Water is a simple molecule consisting of one oxygen atom bonded to two different hydrogen atoms. Because of the higher electronegativity of the oxygen atom, the bonds are polar covalent (polar bonds). The oxygen atom attracts the shared electrons of the covalent bonds to a significantly greater extent than the hydrogen atoms. The molecule has a bent structure, the H—O—H bond angle is about 105°.
Q1. In which of the following, heat energy will be evolved?
(a) Electrolysis of water
(b) Dissolution of NH4Cl in water
(c) Burning of L.P.G.
(d) Decomposition of AgBr in the presence of sunlight
1. Who discovered cell?
a) Robert Hooke
b) Robert Brown
c) Anton Leeuwenhoek
d) Schleiden & Schwann
Q1. What is oxidation?
Answer: Addition of oxygen or removal of hydrogen from a compound is known as oxidation.
Elements or compounds in which oxygen or non-metallic element is added or hydrogen or metallic element is removed are called to be oxidized.
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