Earth is the only planet with a Biosphere and a Hydrosphere.
Answer:
DNA is a long polymer with deoxyriboses and phosphate backbone. Having four different nitrogenous bases: adenine, guanine, cytosine and thymine. RNA is a polymer with a ribose and phosphate backbone. Four different nitrogenous bases: adenine, guanine, cytosine, and uracil.
Answer:
1. Ribosomes
2. DNA
3. Cytoplasm
4. Cell membrane
Explanation:
Prokaryotic and eukaryotic cells possess important differences but also share some similarities. The main difference between these types of cells is that <u>eukaryotes contain membrane-bound organelles and a nucleus</u>. Moreover, <u>eukaryotic cells, in contrast to prokaryotic cells, contain a cell wall and chloroplasts (in plants) and mitochondria, Golgi apparatus, amongst other differences, including the genetic material which, in prokaryotic cells, is a single and circular DNA.</u>
The similarities, on the other hand, involve, for example, the presence of ribosomes, vesicles, vacuoles, DNA, cytoplasm, and cell membrane. Although there is a significant difference in size and arrangement, we could say they share the similarity of possessing these structures.
Answer: Prophase 1
Explanation:
Nuclear division is about to occur, nucleolus disappear, fragmentation of the nuclear envelope takes place.
The centrosomes apart from each other and the spindle fiber assembles.
Crossing over may take place at this time by the end of which the sister chromatids are no longer identical.
All of these events takes place during the prophase 1 stage of meiosis.
Tge system that coirdinate and send message to the body is the nervous system