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State in brief about the nuclear DNA
The nuclear DNA is distributed between two or more chromosomes, the number of which varies among different eukaryotes, and is characteristic of every organism. The yeast cell, for example, has 12- 18 chromosomes, while the human cell has 23 pairs of chromosomes. The nucleus is filled up with nucleoplasm, which contains several of the enzymes involved in the synthesis of nucleic acids. The nucleus also contains a roughly spherical body, the nucleolus, within which the RNA component of ribosomes is synthesised. The nucleus and its associated chromosomes undergo profound changes at the time of cell division, during which, the genetic material is duplicated and identical copies of it are shared between the two daughter cells.
Characteristics of Metazoa The unicellular protozoans are highly versatile and successful organisms that show remarkable organization and division of labour within the confine
Describe in brief about the Boron - Micronutrients Boron is required in extremely small amounts in the range of 0.01 to 1.0 ppm. The actual amount may vary from crop to crop
Define sex
Explain the term Protoderm? The protoderm is one of the so-called "primary tissues" because it is formed first during germination and subsequent plant growth. The protoderm g
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Which law of thermodynamics explains the fact that we must eat to gain the energy to perform the functions of life, such as breathing? a. fourth law b. first law c. second law d
Release of lysosomal enzymes from white blood cells during a local immune attack can contribute to the symptoms of inflammation. Suppose, to alleviate inflammation, you develop a d
Hormone s . Cortical steroids (corticoids-hormones of adrenal cortex) are grouped into three catagories : mineralocorticoids, glucocorticoids and gonadocorticoids. (i) Mine
Structure and development of leaf
Cleavage - Development Biology Cleavage or segmentation is a series of cell divisions of the fertilized .egg through which it is converted into a multicellular structure, call
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