Fossil diatoms form diatomaceous earth. Commercially, it is called diatomite or kieselguhr. Due to its lightweight, porosity and capacity to... View Article
Differences between bacteria and cyanobacteria are as follows - Attribute Bacteria Cyanobacteria Diameter of cell Typically ranges from... View Article
One of the methods through which vegetative reproduction exists in Nostoc is akinetes. Akinetes are resting pores formed to tide over adverse... View Article
Vegetative reproduction exists in Nostoc in several methods. One of which is hormogonium. Hormogonium is part of the trichome between two... View Article
On the basis of the arrangement and the number of flagella, the following types of bacteria are classified - Type of bacteria Description of... View Article
Based on the forms, bacteria are designated as coccus, bacillus, spirillum and vibrio forms. Cocci form, in turn, depending on the mode of their... View Article
Bacteriophages exhibit two types of life cycles namely the Lytic life cycle and lysogenic life cycle. The viruses that kill the host bacterium... View Article
The non-living properties of viruses are - Viruses lack cellular organization as they do not contain protoplasm and the enzyme system of their... View Article
The living properties of viruses are - All viruses are nucleoproteinaceous in nature Nucleic acid found is either RNA or DNA, never both in... View Article
Apoptosis is a necessary evil among multicellular organisms like a man. Organisms have many advantages due to the process as given below -... View Article
Apoptosis is a programmed cell death involving systematic disassembly of cells. The following are the important features of an apoptotic cell -... View Article
Genetic analysis of family histories of cancer patients shows that most of the common cancers have no genetic pattern. But there are cases of... View Article
One of the biggest problems of cancer is its capacity to spread in the body. It spreads by one or all the following 3 methods - Lymphatic... View Article
Anaphase I begins with the shortening of chromosomal fibres that are attached to the centromeres of homologous chromosomes. Hence, each... View Article
Chromosomes in diakinesis will have undergone maximum condensation and appear thicker and shorter than at any other stage. As the homologous... View Article
After the completion of crossing over and recombinations, synapse chromosomes begin to repel from one another during diplotene. However, the... View Article
During pachytene, a mutual exchange of chromosomal material between non-sister chromatids of the bivalents occurs. This genetic exchange is... View Article
The pairing of homologous chromosomes is completed during the pachytene stage. As a result of continued condensation, chromosomes become much... View Article
