Types of amoeboid movements, Biology

Types of Amoeboid Movements

As the amoeba's cell body throws out one or a few pseudopodial lobes, a temporary rear end or uroid is pulled along. The central, more fluid protoplasm, the endoplasm flows -towards the extending pseudopodium, the advancing tip of which appears a thicker gel, the ectoplasm. During the amoeboid movement, the sol-like endoplasm is converted into gel like ectoplasm at the advancing tip of the pseudopodium; a reverse process simultaneously occurs at the.uroid end where the gel changes into sol. At some point the pseudopodium gets attached to the substratum and the cell is moved forward.

1063_Types of Amoeboid Movements.png

Figure: Amoeboid locomotion in different amoebae.

It is also a widely accepted view that the amoeboid movements depend on the contraction of cellular proteins which are comparable to those occurring in the muscle. Actin and myosin have been found to be present in amoeboid cells; tropomysin has also been demonstrated in some instances. Figure shows the various types of amoeboid movements.

Posted Date: 1/12/2013 5:49:20 AM | Location : United States







Related Discussions:- Types of amoeboid movements, Assignment Help, Ask Question on Types of amoeboid movements, Get Answer, Expert's Help, Types of amoeboid movements Discussions

Write discussion on Types of amoeboid movements
Your posts are moderated
Related Questions
What bacterial cell structures are used to carry the genes intended for genetic engineering? The cells structures in bacteria which carry genes intended for genetic engineering

Define Analysis of Amino Acid sequence on Particular Peptide? The analysis of the relative order or the sequence in which the ammo acids are arranged-along the length of the

Respiratory Distress Syndrome: Respiratory distress in a  newborn is  a challenging problem.  It  accounts for significant morbidity and mortality. It occurs  in  4 to 6 per c

Describe the concept of gastrulation? During embryological development this stage results in blastulas conversion into a gastrula. Cells migrate toward the inside of embryo fro

What are the types of proteins in metabolism of lens? Soluble Proteins Its synthesis takes place in the equatorial part on the surface of lens. a. Alpha crystallins

VITAMIN - C Also known as ascorbic acid / anti viral vitamin / anti cancer vitamin / anti rabies vitamin / anti scurvy vitamin. It is the earliest known vitamin. It

complete definition of Sporogenous tissue

Explain in details Class Hirudenia - Leeches? This group includes the leeches. Most leeches grow in tropical freshwater habitats, and are familiar to most people as bloodsucker

What are the Benefits of migration Eg: Need to leave Alaska due to harsh weather conditions (statement that birds are escaping NZ winter not acceptable). Longer day

A species has a diploid chromosome number of 56. Is it true or false that of the 28 chromosomes in an ovum, 14 are always paternal? Ignore the effects of crossing over. Justify you