| |
Fact |
Category |
Date |
|
| 16 |
Carbohydrates are made up of three elements: carbon, hydrogen, and oxygen; they have a monomer of sugars or starches. |
Science > Biology |
02/05/09 |
|
| 17 |
By mass, about 18% of the human body is composed of the element carbon. |
Science > Biology |
02/03/09 |
|
| 18 |
Carcinogens are any substances that have the capability of causing cancer. |
Science > Biology |
02/03/09 |
|
| 19 |
In humans and most mammals, a female has two X chromosomes. |
Science > Biology |
02/02/09 |
|
| 20 |
By mass, about 3% of the human body is composed of the element nitrogen. |
Science > Biology |
02/02/09 |
|
| 21 |
By mass, about 10% of the human body is composed of the element hydrogen. |
Science > Biology |
02/02/09 |
|
| 22 |
Primate cells, except for those of humans, have 24 pairs of chromosomes. |
Science > Biology |
02/02/09 |
|
| 23 |
By mass, about 65% of the human body is composed of the element oxygen. |
Science > Biology |
02/02/09 |
|
| 24 |
Human cells have 23 pairs of chromosomes. |
Science > Biology |
02/02/09 |
|
| 25 |
In humans and most mammals, a male has an X and a Y chromosome. |
Science > Biology |
02/02/09 |
|
| 26 |
Sporulation, which is used by mushrooms, is reproduction through the use of spores. |
Science > Biology |
01/18/09 |
|
| 27 |
Binary fission is the form of asexual reproduction and cell division, which is mainly used by bacteria. |
Science > Biology |
01/17/09 |
|
| 28 |
Mitosis is how a multi-cellular organism grows or gains body mass. |
Science > Biology |
01/16/09 |
|
| 29 |
Budding is a form of reproduction in which a new organism is formed from a protrusion of an existing organism. |
Science > Biology |
01/16/09 |
|
| 30 |
Mitosis is composed of four main phases: prophase, metaphase, anaphase, and telephase. |
Science > Biology |
01/15/09 |
|
