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How is gas exchange done in flatworms?
Platyhelminthes exchange gases exclusively by diffusion by their body surface. This is only possible because all cells are localized relatively near to the exterior as gases diffuse cell by cell (the flat shape of these worms is a feature that permits this type of respiration).
Quaternary Structure (4 o Structure). Globular in structure. When two or more than two molecules of protein of tertiary structure are connected to each other through
Q Which is the biological molecule that holds the genetic information that is transmitted hereditarily and controls the cellular functioning? The hereditary molecule that contr
assignment having 12 questions
In addition, pregnancy or constipation may worsen GERD by increasing intra-abdominal pressure. Secondary causes of GERD include reflux caused by acid hypersecretory states, connec
Amniocentesis is a way of prenatal testing in which the amniotic fluid is withdrawn from the uterus by the help of a needle. The fluid and the fetal cells it contains are analyzed
Which one of the following statements about morula in humans is correct? 1. It has almost equal quantity of cytoplasm as an uncleaved zygote but much more DNA 2. It has far l
Respiration – Protozoan Gas exchange occurs by the diffusion of oxygen across the cell membrane. Some protozoan utilize this oxygen but are also capable of anaerobic respirati
what is the effect that korarchaeotes have on humans?
Q. What do you undersand by pollution? The Pollution is the contamination of an ecosystem by factors that are harmful for the equilibrium of its abiotic or biotic constituents.
Causes of Air Pollution We known about the composition of atmosphere, its major and minor constituents. The composition of atmosphere has remained the same for thousands of y
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