By: Heather Brennan
The lysosome is the cell’s digestive system. Found in nearly all eukaryotic cells, lysosomes are responsible for digesting macromolecules and other structures that enter the cell by endocytosis. It is a single membrane organelle that contains hydrolytic enzymes. Most cells contain a few hundred...
By: Christyl Rivers
Fundamental characteristics of life include several components. For the purpose of this article all life forms will be called organisms. Organisms consist of at least one cell, and fall into one of six kingdoms. Plants, animal and fungi are three of these, and on the...
Scientists discover unknown fossilized algae inside meteorite
By: Terrence Aym
The confirmation of alien life on exoplanets may not arrive from exotic space missions, whiz bang robotic space probes, or even the derring-do of future astronauts. The proof of alien life might be discovered right here on Earth—inside a meteorite.The Panspermia theoryThe theory...
Why Harvard wants to create a Neanderthal baby
By: Terrence Aym
Some people want to climb the highest mountain, or walk on the surface of Mars, or discover the cure for cancer…Professor George Church, a brilliant genetics professor at Harvard Medical School wants to resurrect Mankind's long lost relative, the Neanderthal. He plans to accomplish...
By: Heather Brennan
A macromolecule is a large molecule made up of smaller units called monomers. These monomers can be combined in thousands of different ways to create a multitude of macromolecules. There are four basic types of macromolecules: proteins, nucleic acids, carbohydrates and lipids. The first three...
How plants support the existence of life
By: H Barton
How do plants support the existence of life? Why, just about by doing everything! Think about this... If you got rid of all living organisms that are not plants, the plants would still survive and develop their own ecosystems. However, if you got rid of...
By: Menaka Ratnayake
Throughout life, all living organisms undergo changes in relation to their size, complexity, function, etc. Almost all of these changes are the result of four types of macromolecules. These are the carbohydrates, lipids, proteins and nucleic acids. The reason for these molecules to be referred...
By: Heather Brennan
Dolphins are highly intelligent mammals. They belong to a family that includes orcas and pilot whales. They have a long history of interacting with people on boats, in the oceans and in captivity. In the wild, they form close-knit family pods that communicate through echolocation...
Four categories of biological macromolecules
By: Dr. Bryan Katz
In biology, a macromolecule refers to any agglomerate or polymer made up of smaller building blocks, or monomers. Traditionally, the study of biological macromolecules was highly compartmentalized. While some scientists devote their entire careers to the study of specific proteins, carbohydrates, lipids or nucleic acids...
By: Rena Sherwood
Goldfish do best in water temperature around 60 degrees Fahrenheit (15.6 degrees Celsius) but can thrive in a wide range of temperatures from 50 to 68 degrees F (10 to 20 degrees C). It’s best to keep a thermometer on the aquarium to...

 

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