Tuesday, March 30, 2010


Metamorphosis in insects is often followed by destroying in tissues at larval phase is replaced by networks of cells that have differentiated new. Insect molting to grow in a way that is new cuticle growth with increasing body size. There are three types of growth in the Insecta:
  1. Ametabola, the stage is not the larval stage, the moth and sample like a fleas. 
  2. Hemimetabola, namely through the stages of metamorphosis pro-nimpha which occurred just after hatching. After that, the insects have nimpha stage. In hemimetabola metamorphosis, the wing rudiment, genital organs, and the structure characteristics of the other developments already formed but not yet perfect. However, these organs grow perfectly at the end of molting. An example can be found in locusts and vermin.  
  3. Holometabola, the metamorphosis that began with process larvae after hatching. Undergoing molting larvae will grow and large. Stages of suffering among larvae instar called molting. After the final instar stage formed pupa. During the formation of the pupa, there was the formation of adult structures.
Hormones that affect the metamorphosis of butterflies - butterfly Molting and metamorphosis are controlled by several effectors such as hormones, namely: Read More Here
Sunday, March 21, 2010


Metamorphosis is a biological process by which an animal physically develops after birth or hatching, involving a conspicuous and relatively abrupt change in the animal's body  structure through cell growth and differentiation. Some insects, amphibians, mollusks, crustaceans, Cnidarians, echinoderms  and tunicates  undergo metamorphosis, which is usually (but not always) accompanied by a change of habitat or behavior.

Scientific usage of the term is exclusive, and is not applied to general aspects of cell growth, including rapid growth spurts. References to "metamorphosis" in mammals are imprecise and only colloquial, but historically idealist ideas of transformation and monadology, as in Goethe's Metamorphosis of Plants, influenced the development of ideas of evolution.

Insect  growth and metamorphosis are controlled by hormones  synthesized by endocrine glands near the front of the body.

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Wednesday, March 17, 2010

Single Cell

Living things is the simplest single-celled organisms. They were the first living creatures on earth, and until now still in the meet everywhere.

Cell is the smallest part of the life-support units. Living things are the simplest has only one cell, which contains all the information and processes necessary for survival and reproduction of such cells.

Cell has a thin outer wall, which can penetrate through which chemical substances. In the cell walls are jam-like fluid called the cytoplasm, which contains small structures or small organs, often called organelles, to perform specific functions. The structure is the central nucleus, which contains genes that determine cell shape and function. The rest are other structures releasing energy from food, remove the remaining substances, or protect the cells from other organisms attack.

More than 3000 million years ago, single-celled organisms first appeared in the waters of the earth. Chemical elements that make the creation of life is unknown. Now the simplest living things are classified in the Monera. There are two main groups, namely bacteria and cyanobacteria (algae green / blue algae). Its size is very small so can only be seen through a microscope with strong magnification.

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Sunday, March 14, 2010


Chloroplasts are organelles found in plant cells and eukaryotic algae that conduct photosynthesis.
Chloroplasts absorb sunlight and use it in conjunction with water and carbon dioxide gas to produce food for the plant.

Chloroplasts capture light energy from the sun to produce the free energy stored in ATP and NADPH through a process called photosynthesis.
Chloroplasts are one of the many unique cells in the body, and are generally considered to have originated as endosymbiotic cyanobacteria.
In this respect they are similar to mitochondria, but are found only in plants and Protista.
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Friday, March 12, 2010


A microorganism or microbe is an organism that is microscopic. The study of microorganism is called microbiology, a subject that began with Anton Van Leeuwenhoek’s discovery of microorganism in 1675, he using a microscope of his own design.

Microorganism are very diverse. They include bacteria, fungi, and protist. Micsroscopic plants or green algae, and animals such as plankton and the planarian. Some microbiologist are include viruses, but others consider these as non-living.

Most microorganism are unicellular (single-celled), but this is not universal, since some multicellular organism are microscopic, while some unicellular protists and bacteria, are macroscopic and visible to look with naked eye.

Read More Here