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Define uniport, symport, and antiport. Do they require energy? Explain.

Important Questions on Transport in Plants

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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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Biology>Plant Physiology>Transport in Plants>Means of Transport in Plants
Which one of the following is not applicable to RNA?
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Biology>Plant Physiology>Transport in Plants>Means of Transport in Plants
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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Biology>Plant Physiology>Transport in Plants>Means of Transport in Plants
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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Biology>Plant Physiology>Transport in Plants>Means of Transport in Plants
Identify the correct order of organization of genetic material from largest to smallest :
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Biology>Plant Physiology>Transport in Plants>Means of Transport in Plants
Nuclear envelope is a derivative of:
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Biology>Plant Physiology>Transport in Plants>Means of Transport in Plants
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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Biology>Plant Physiology>Transport in Plants>Means of Transport in Plants
The equivalent of a structural gene is:
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Biology>Plant Physiology>Transport in Plants>Means of Transport in Plants
Root pressure is usually acidic because:
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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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Biology>Plant Physiology>Transport in Plants>Means of Transport in Plants
Gene regulation governing lactose operon of E. coli that involves the lac I gene product is:
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Microtubules are the constituents of:
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Select the correct matching in the following pairs:
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Biology>Plant Physiology>Transport in Plants>Means of Transport in Plants
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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Biology>Plant Physiology>Transport in Plants>Means of Transport in Plants
Which one of the following is not an inclusion body found in prokaryotes?
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Select the mismatch.
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Select the wrong statement.
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Biology>Plant Physiology>Transport in Plants>Means of Transport in Plants
Chromatophores take part in:
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Biology>Plant Physiology>Transport in Plants>Means of Transport in Plants

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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Biology>Plant Physiology>Transport in Plants>Means of Transport in Plants
Fertilization in humans is practically feasible only if: