Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
AMOEBA
Systematic Position
Amoeba was discovered by Russel von Rosenhoff in 1755. He called it the little proteus after the mythical sea god who is believed to be capable of changing shape.
Several species of Amoeba are known ,Amoeba proteus (Gr, amoib= change ) is commonest and best known .Other common species are .Aradiosa ,A discoides and A verrucosa. The following description is largely based on A proteus.
Habit and Habitat
Amoebae inhabit fresh or marine water and moist soil. A proteus is abundant in bottom mud or surface scum of ditches , ponds, lakes streams , etc, having plenty of decaying organic matter ,Normally ,it creeps upon solid objects feeds upon algae, bacteria, etc, responds to stimuli and multiplies by mitosis.
Culture of Amoeba
Temporary cultures of amoeba can be easily prepared for laboratory study by hay infusion method , Dry and clean leaves grass wheat grains or banana peals are boiled in distilled water for about 15 minutes. The water is then filtered and allowed to stand open for 2to 3 days .This allows abundant bacterial growth in it ,Now some half rotten leaves are brought from a pond or ditch, washed ant put into the filtrate. Within a week the filtrate abounds with amoebae. A drop from the bottom of the container on to a slide shows several amoebae when observed under the microscope.
You now want to express the gene in E coli, but unfortunately it has an intron in it that will not be processed out in bacteria, hence it must be removed. (a) Design P
Q. What are the reticular fibers of the connective tissue and where they can be found? The reticular fibers are especially delicate interstitial fibers made of a special kind o
How do organisms adjust to changes in temperature? Some of the most ordinary way for an organism to adjust to changes in body temperature is by perspiration or panting.
Describe the Phylum Chordata in animal kingdom? This is the other group of animals along with the Echinodermata whose anus develops prior to the mouth's development in the embr
Explain the Dark Adaptation of Vitamin A? In the early stages of VAD, the individual cannot see objects in dim light. This' phenomenon is used as a criterion for assessment in
Q. What are the four initial stages of the embryonic development? The four early stages of the embryonic development are the blastula stage, the morula stage, the gastrula stag
Q. For the biological diversity is meiosis or mitosis the more important process? Meiosis is the cell division process that allows the formation of gametes to sexual reproducti
Implant Selection Errors There are a plethora of commercially available implant systems and designs. Qualitative and quantitative nature of the available bone should be careful
Stems transport liquids (a) Cut about 2 cm from the end of stems of celery and place them in cold water for about an hour to freshen. Next place the stems in dishes having red
In humans, starch digestion begins in the buccal cavity, but stops in the stomach .Why?
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd