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What are the uses of a simple microscope?

Important Questions on Cell: The Unit of Life

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Science>Biology>Cell: The Unit of Life>Invention of Microscope and Its Different Types
Proteins P, Q, and R are associated with an intact organellar membrane in a cell. If the intact organelle is treated with a high ionic strength buffer, only protein R remained associated with the membrane fraction. Based on this, one could conclude that:
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Science>Biology>Cell: The Unit of Life>Invention of Microscope and Its Different Types
Chromatophores take part in:
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Science>Biology>Cell: The Unit of Life>Invention of Microscope and Its Different Types
Match the columns and identify the correct option.
 
  Column I   Column II
A Thylakoids (i) Disc-shaped sacs in Golgi apparatus
B Cristae (ii) Condensed structure of DNA
C Cisternae (iii) Flat membranous sacs in stroma
D Chromatin (iv) Infoldings in mitochondria
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Science>Biology>Cell: The Unit of Life>Invention of Microscope and Its Different Types
Nuclear envelope is a derivative of:
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Science>Biology>Cell: The Unit of Life>Invention of Microscope and Its Different Types

Mitochondria and chloroplast are:

(i) Semi - autonomous organelles

(ii) Formed by the division of pre-existing organelles and they contain DNA but lack protein synthesizing machinery

Which one of the following option is correct?

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Science>Biology>Cell: The Unit of Life>Invention of Microscope and Its Different Types
The schematic below describes the states of the lac operon in the absence of lactose. Which ONE of the following happens when lactose is present in the cell?
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Science>Biology>Cell: The Unit of Life>Invention of Microscope and Its Different Types
Which one of the following is not applicable to RNA?
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Science>Biology>Cell: The Unit of Life>Invention of Microscope and Its Different Types
Which one of the following is not an inclusion body found in prokaryotes?
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Science>Biology>Cell: The Unit of Life>Invention of Microscope and Its Different Types
Root pressure is usually acidic because:
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Science>Biology>Cell: The Unit of Life>Invention of Microscope and Its Different Types
Identify the correct order of organization of genetic material from largest to smallest :
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Science>Biology>Cell: The Unit of Life>Invention of Microscope and Its Different Types
In sea urchin DNA, which is double-stranded, 17% of the bases were shown to be cytosine. What are the percentages of other three bases expected to be present in this DNA?
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Science>Biology>Cell: The Unit of Life>Invention of Microscope and Its Different Types
Fertilization in humans is practically feasible only if:
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Science>Biology>Cell: The Unit of Life>Invention of Microscope and Its Different Types
Gene regulation governing lactose operon of E. coli that involves the lac I gene product is:
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Science>Biology>Cell: The Unit of Life>Invention of Microscope and Its Different Types
The molecular weight of E coil. DNA is 3.1×109 g/mol. The average molecular weight of the nucleotide pair is 660 g/mol and each nucleotide pair contributes to 0.34 nm to the length of DNA. The length of E coli DNA molecule will be approximately:
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Science>Biology>Cell: The Unit of Life>Invention of Microscope and Its Different Types
Select the correct matching in the following pairs:
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Science>Biology>Cell: The Unit of Life>Invention of Microscope and Its Different Types
Select the wrong statement.
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Science>Biology>Cell: The Unit of Life>Invention of Microscope and Its Different Types
The equivalent of a structural gene is:
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Science>Biology>Cell: The Unit of Life>Invention of Microscope and Its Different Types
If you suspect major deficiency of antibodies in a person, to which of the following would you like for confirmation evidence?
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Science>Biology>Cell: The Unit of Life>Invention of Microscope and Its Different Types
Microtubules are the constituents of:
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Science>Biology>Cell: The Unit of Life>Invention of Microscope and Its Different Types
Car B overtakes another car A at a relative speed of 40 m s-1. How fast will the image of car B appear to move in the mirror of focal length 10 cm fitted in car A, when the car B is 1.9 m away from the car A?