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What are coacervates?
Coarcervates are small structures made of the aggregation of organic molecules under water solution. By electrical attraction the molecules join into bigger and more organized particles separate from the fluid environment forming a membrane-like structure that divides an internal region of the coacervate from the exterior. The coacervates might separate themselves and also absorb and excrete substances. It is believed that these structures might have been the precursors of cells.
How is the circulatory system of birds characterized? Birds, as every vertebrate, have a closed circulatory system. The heart is same to the mammalian heart, having four chambe
Define Metabolic Aberrations and Clinical Manifestations? The state of obesity brings about certain alterations in the normal body processes which are enumerated herewith and h
what Photoperiodism
What is Vacuoles A very conspicuous feature in most plant cells is the presence of one or more large vesicles called vacuoles which are separated from the rest of the cytoplasm
What are cytokinins? Where are they made? Cytokinins are phytohormones active in the promotion of cellular division; they slow down the aging of tissues and act together with a
Q. How are gametes formed in the pteridophyte life cycle, by mitosis or meiosis? What is the type of meiosis that occurs in pteridophytes? In pteridophytes gametes are made by
What are the respective constituents of the gray matter and of the white matter of the spinal cord? The gray matter, or gray substance, of the spinal cord having predominantly
A cell in G1 of interphase has 12 chromosomes. How many chromosomes and DNA molecules will be found per cell when this original cell progresses to the G2?
A red blood cell has an internal salt concentration of 150mM. The cell is placed in a beaker of 500mM salt. (a) Assuming that the cell membrane is permeable to water but not to
Procedure of Examining Foot Let us learn the steps of examining the foot and identify foot at risk. Steps to follow: 1. Make the patient comfortable. 2. Provide priv
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