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A thin section of a specimen is taken for viewing it through a microscope because

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Important Questions on Cell - Structure and Functions

MEDIUM
Science>Biology>Cell - Structure and Functions>Cell Shape and Size
An exception to cell theory is
EASY
Science>Biology>Cell - Structure and Functions>Cell Shape and Size
Who discovered cells in the human body?
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Science>Biology>Cell - Structure and Functions>Cell Shape and Size
The concept of “Omnis cellula-e cellula” regarding cell division was first proposed by:
MEDIUM
Science>Biology>Cell - Structure and Functions>Cell Shape and Size
Which one of the following statements is true for a microscope?
MEDIUM
Science>Biology>Cell - Structure and Functions>Cell Shape and Size
Why do we stain the 'study material'?
MEDIUM
Science>Biology>Cell - Structure and Functions>Cell Shape and Size
Draw a ray diagram to illustrate the action of a convergent lens as reading glasses or a magnifying glass.
EASY
Science>Biology>Cell - Structure and Functions>Cell Shape and Size
Why could cells not be observed and studied for thousands of years?
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Science>Biology>Cell - Structure and Functions>Cell Shape and Size
Viruses can be seen by simple microscope.
MEDIUM
Science>Biology>Cell - Structure and Functions>Cell Shape and Size
Can we prepare slides without using stains? If not, why?
MEDIUM
Science>Biology>Cell - Structure and Functions>Cell Shape and Size
A microscope is used to _____.
EASY
Science>Biology>Cell - Structure and Functions>Cell Shape and Size
Differentiate between dry and wet mounts.
EASY
Science>Biology>Cell - Structure and Functions>Cell Shape and Size
What precaution should be taken while placing a coverslip over the study material?
MEDIUM
Science>Biology>Cell - Structure and Functions>Cell Shape and Size
A microscope is a useful optical device, as everyone agrees. It has a_____. (magnifier/concave lens)
EASY
Science>Biology>Cell - Structure and Functions>Cell Shape and Size
What purpose is served by the coverslip?
HARD
Science>Biology>Cell - Structure and Functions>Cell Shape and Size
What is mounting of slides? What are the two types of mounts prepared?
EASY
Science>Biology>Cell - Structure and Functions>Cell Shape and Size

Write the quadrants in which the following points lie:

-4,7

HARD
Science>Biology>Cell - Structure and Functions>Cell Shape and Size
Describe stepwise how you would make a slide of an onion peel and observe it under a microscope.
EASY
Science>Biology>Cell - Structure and Functions>Cell Shape and Size

Match the name of the scientist given under column 'A' with the organism or the product was given under column.

  Column 'A'      Column 'B'
1. Leeuwenhoek   (a)  phagocytes
2. Elic Metchnikoff   (b)  microscope
3. Louis Pasteur (c)  penicillin
4. Alexander Fleming  (d) antiseptic
5. Edward Jenner (e) pasteurisation
EASY
Science>Biology>Cell - Structure and Functions>Cell Shape and Size
Differentiate between temporary and permanent slides.
MEDIUM
Science>Biology>Cell - Structure and Functions>Cell Shape and Size
Why are plant and animal specimens usually stained with dyes before observing them through a microscope? Name one stain (or dye) used for this purpose.