A microspheres is a microscopic hollow sphere, especially of a protein or synthetic polymer.
Well what do you need help with
Answer:Bones are composed of a type of connective tissue called _____osseous_____ tissue, immature bone cells that produce bony tissue are called ________osteoblast____, large bone cells that digest bone tissue to shape the bone and smooth it out are called _______osteoclast_______, and mature bone cells are called _______osteocytes_______.
Explanation:bones are made up of 15% water,30% collagen fibres and 55 % mineral salts.
The collagen makes the bone soft and flexible.the mineral salt makes the bone fragile and strong.
The osseous tissue contains the osteogenic cells which are stem cells.they are differentiated into osteoblasts.osteoblasts build bones and are important in the external matrix of the bone.osteoclast forms osteocytes,which are the main bone cells.
Osteoclast breaks down older tissues in order to keep the bone strong.
Answer:
The lungs look like smokers lungs on the right
Answer:
1.A single band of intermediate density.
Explanation:
According to semiconservative model of DNA replication, the two strands of one DNA molecule separate at the time of replication and each strand acts a template for a new strand. So, the resulting new DNA molecule has one old strand and one new strand.
Here, the E coli cells were grown originally in 14N medium. So all the DNA molecules had 14N strands. When they were transferred to a 15N medium, only 15N was available then for further replications. In the first round of replication in new medium, all the old 14N strands (14N14N) separated and formed a new strand each using 15N. Hence all the resulting DNA molecules had one 14N strand and one 15N strand (14N15N).
Since 14N is of lighter density and 15N is of heavier density, 14N15N strands will give band of intermediate density. Since after one round of replication all DNA molecules will be 14N15N, there will be only one band of intermediate density.
