Question
Consider the following statements regarding
antibiotics 1. They are used to destroy disease-causing bacteria. 2. They can be applied to the skin, swallowed or injected to fight micro-organisms inside the body. 3. They are effective against disease-causing viruses. 4. The first antibiotic to be discovered was Tetracycline. Which of the statement(s) given above is/are correct?ÂSolution
Antibiotics are very effective medicines that treat bacterial infections. They are ineffective against viral infection as viruses have different genetic makeup as compared to bacteria.Â
If no external force acts on a system of bodies, the total linear momentum of the system of bodies remains constant. Which law states this?
A man inside an artificial satellite feels weightlessness because the force of attraction due to earth is –
Which of the following is not an abiotic component of our surrounding?
Which of the following element is found in maximum percentage in the human body?
The force which opposes the relative motion between different layers of liquid or gases is called –
Kindly Study the following questions carefully and choose the right answer.
Human saliva contains an enzyme called salivary amylase that breaks...
In Bernoulli's principle, increase in fluid velocity leads to:
Which part of the plant is responsible for photosynthesis?
A body is thrown vertically upwards and then falls back on the ground. Its potential energy is maximum:
What is the reason for twinkling of stars?
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