Cell Biology and Structure

Prokaryotes have 70S types of ribosomes

Cell is autonomous because it independently carries out all fundamental biological processes like respiration, excretion, reproduction, energy utilisation, etc.

Viruses and cyanobacteria are exceptions or remain unexplained by the cell theory.

The respiratory enzymes of prokaryotes are located in the plasma membrane.

 Totipotency is the ability of a cell to express the full genome and thus form the whole plant like the meristematic cells of shoots or roots.

 Ribosome units are based on the rates of their sedimentation in a centrifuge and eukaryotic ribosomes have a value of 80 units made of 40s and 60s sub-units.

The Krebs cycle occurs in the mitochondrial matrix and generates a pool of chemical energy (ATP, NADH, and FADH2) from the oxidation of pyruvate, the end product of glycolysis.

The volume of an average eukaryotic cell is between 1000 - 10000 mm³.

It is correct because the cristae of mitochondria have the enzyme ATP synthetase for ATP manufacture.

Totipotency is the ability of a cell, such as an egg, to give rise to unlike cells and thus to develop into or generate a new organism or part.

Balbiani rings are large RNA puffs reported in the salivary gland chromosomes of chironomus during larval development.

Integrins are receptors that mediate attachment between a cell and the tissues surrounding it, which may be other cells or the ECM. They also play a role in cell signaling and thereby regulate cellular shape, motility, and the cell cycle.

Cresyl violet is an organic compound with the chemical formula C₁₉H₁₈ClN₃O. It is used in biology and medicine as a histological stain. Cresyl violet is an effective and reliable stain used for light microscopy sections.

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It is small sized uridine rich RNAs that take part in splicing and processing of other RNAs.