you draw a pyramid and split it into different levels to show the flow of energy between different trophic levels
A
biology is branch of science which deals with life
Answer:
The stem cells was discovered by Ernest McCulloch and James Till in 1981. Studies conducted for stem cells can be used for bone marrow transplantation and to treat various diseases.
Explanation:
Stem cell are the cells that has the ability to differentiate into different cells of the body. In 1978 human cord blood discovered as stem cell. The stem cell research come to known in 1981.
Ernest McCulloch and James Till discovered the stem cell research while working on the mice bone marrow. He found that the different blood cells were formed by the single class of cells.
Experiments on mice and other animals have been conducted to study the stem cells so far. The study of stem cell is useful to cure the genetic defects, Cancer and other harmful diseases.
Answer:
1. adenine
2. guanine
3. sugar
4. phosphate
5.. thymine
6 phosphate
7sugar
8. cytosine
9phosphate
10. nucleotide base pair
Explanation: use AT-AT's from star wars to remember the pairing or that C and G look similar
