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Similar to all animal cells, protozoans are covered by a plasma membrane which surrounds cytoplasm of the cell, protozoan's integument or skin. Like all membranes, it's permeable; water and low molecular weight substances dissolve in it. Oxygen, is required for metabolism, and metabolic wastes which are generated by metabolism, diffuse across the surface, giving plasma membrane respiratory and excretory functions. Nucleus, with its nucleolus and chromosomes, contains genetic material and would be involved in providing copies of itself for new cells, reproductive system. Golgi apparatus, rough endoplasmic reticulum, and lysosomes which they produce, fuse with ingested food vacuoles, phagosomes.
Fischer 's template or lock and key model According to this model, the catalytic site of the enzyme has a proper conformation compatible to a specific substrate even in the a
Q. Where does most of the water resorbed after glomerular filtration go? What are the other substances resorbed by the nephron tubules? Only 0.5 to 1% of the glomerular filtrat
In marked contrast to prokaryotic genes where proteins are encoded by a continuous sequence of triplet codons and the vast popular of protein-coding genes in eukaryotes are discont
What is scientific investigation?
Some of the characteristics of Bt cotton are: 1. Long fibre and resistance to aphids 2. Medium yield, long fibre and resistance to beetle pests 3. High yield and produ
Cap site Two usages are given below: 1] In eukaryotes, the cap site is position in the gene at which transcription begins, and really should be called the "transcription initia
Explain Theory of Evolution through Natural Selection The third theory of evolution through natural selection was put forward jointly by Darwin, and Wallace in 1859. This theor
The greatest buffering capacity of weak acids is when- Select one: a. They are almost completely dissociated b. They are almost completely undissociated c. They are nea
a) Which vitamin helps to maintain resistance to infectious diseases? b) Name two foods which are a good source of this vitamin. a) Vitamin A (retinol) helps m
Q. How you would dispose off sharps and needles? Used needles should not be bent or broken prior to disposal. Unsheathed needles are placed directly into the designated, punctu
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