Essays Tagged: "Starfish"

Evolution of Immunity in Invertebrates

er surprising ways. In 1982 a Russian zoologist named Elie Metchnikoff noticed a unique property of starfish larva. When he inserted a foreign object through it's membrane, tiny cells would try to ing ... n that phagocytosis occurred in specialized mammal cells but never in something less complex like a starfish. This discovery led him to understand that phagocytosis played a much broader role, it was ...

(5 pages) 56 0 3.0 Oct/1996

Subjects: Science Essays > Biology

This essay is about the rose sea star (crossaster papposus), or starfish. The Rose Sea Star by Jacklyn Beaver

. These eyespots are sensitive to light. So they kind of have an idea of where they are going. Some starfish move toward the light, but others like the dark. Their overall diameter ranges in size from ... ow, or dark red with a white underside. It's entire upper surface is cover with brushlike bristles. Starfish have a very large and wide flattened disk. This is where there arms attach. If a starfish's ...

(1 pages) 40 1 4.1 Mar/2003

Subjects: Science Essays > Biology

The Classification and Evolution of Sponges and Starfish.

The Classification and Evolution of Sponges and StarfishByAbstractFor the purpose of this research project the subjects shall be cushion starfish a ... piratory system.The fossil record indicates the development of Echinodermata in the early Cambrian. Starfish also known as Asterozoans, appeared in the Ordovician. The oldest show shared characteristi ...

(3 pages) 53 0 5.0 May/2003

Subjects: Science Essays > Biology

SeaStar Starfish, The

waste to skin gills. From the skin gills, the nitrogen waste diffuses into seawater surrounding the starfish. Carbon dioxide waste also diffuses into seawater from the skin gills. The coelomic fluid c ... e is no head or aggregation of nerve organs, the only real sense organs are the rudimentary eyes of starfish, chemosensory receptors of sea urchins, and balance organs (stratocysts) in sea cucumbers, ...

(2 pages) 31 0 3.8 Feb/2004

Subjects: Science Essays > Biology

The arm of the starfish

The Arm of the Starfish The title of this book is The Arm of the Starfish. It was written by Madeleine L'En ... s book is The Arm of the Starfish. It was written by Madeleine L'Engle. She named it The Arm of the Starfish, because Dr. O'Keefe is studying starfish. Humans and Starfish are closely related and Dr. ... is studying starfish. Humans and Starfish are closely related and Dr. O'Keefe is seeing if because starfish can regrow limbs maybe humans can too. The setting of this story is in many places i ...

(2 pages) 753 0 5.0 Feb/2008

Subjects: Social Science Essays > Psychology

Helianthoides, commonly known as sunflower starfish, begin their life cycle

Helianthoides, commonly known as sunflower starfish, begin their life cycle when both male and females release their eggs or sperm openly into ... cycle when both male and females release their eggs or sperm openly into the ocean waters [a]. The starfish know when to release their sperm and egg because of an internal calendar. This makes sure b ... nus is cut off and a new one protrudes. After these changes and many more we are left with an early starfish [n]. The early starfish grows tube feet and is finally able to crawl and it resembles a mat ...

(2 pages) 1472 0 0.0 Feb/2008

Subjects: Science Essays > Biology

The Evolution of the Cell Phone

ut in 1995 in a dispute about the company's direction. He then launched cell phone software company Starfish, which played a role in his invention of the cell phone camera in 1997.A number of companie ... ake a photo and wirelessly post it for his friends and family.Motorola was in the process of buying Starfish and Kahn showed his invention to his new boss who passed on his idea to pursue the satellit ...

(6 pages) 55 0 0.0 Nov/2008

Subjects: Social Science Essays > Controversial Issues

Scientific Taxonomy and Earth's Biodiversity

s, Hemiprocnidae (Myers, 2008).Echinoderms have a variety of species but we will only focus on two: starfishes and sand dollars. They share the following characteristics: two embryonic openings, the a ... rical organisms (Myers, 2008). On the other hand, apparent contrasts exist between the two as well. Starfish have five or more arms, which extend from an indistinct disc, have a diet that includes she ...

(3 pages) 1460 0 3.0 May/2009

Subjects: Businesss Research Papers