Caskets of life - class-IX
Select the correct option:
Select the correct option:
Select the correct option:Who gave the lamellar or sandwich model of cell membrane?
Nucleolus contains
What is true of fluid mosaic model?
Which of the following show selective permeability?
Which one of the following pairs of structures distinguishes a nerve cell from other types of cell ?
Cell membranes consist mainly of a
According to widely accepted, "Fluid mosaic model" cell membranes are semi-fluid, where lipids and integral proteins can diffuse randomly. In recent years, this model has been modified in several respects. In this regard, which of the following statements is incorrect?
A cell weighing 1 mg grows to double its initial mass before dividing into two daughter cells of equal mass. Assuming no death, at the end of 100 divisions what will be the ratio of the mass of the entire populations of these cells to that of the mass of the Earth? Assume that mass of the Earth is $10^{24}Kg$ and $2^{10}$ is approximately equal to $1000$.
Hybridoma cells are
Choose the correct answers from the alternatives given.
Slime molds have:
To observe Amoeba and Paramecium in a water drop, the drop was taken on a glass slide. If both the organisms were clearly seen, then the stain used must be ________.
Shape of Paramecium is
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Which one of the following protists is not correctly linked to the type of movement it shows?