Prokaryotic cells have a nuclear while eukaryotic cells have a nucleus. Eukaryotes have membrane bound organelles. Eukaryotes have chromosomes while prokaryotes do not. Also prokaryotic cells have circular DNA while eukaryotic cells have linear DNA, or "double helix".
Answer:
hydrogen and oxygen combine explosively in a single raction
Explanation:
The reason is Molecules of hydrogen react with oxygen violently to break the initial molecular bonds and form new one between the atoms of the two elements. The reaction results into an explosive release of energy and the production of water because the products of the reaction are at a lower energy level
Cells that have no mitochondria are unable to convert oxygen into energy, found in the form of adenosine triphosphate (ATP). All multicellular eukaryotic organisms, including plants and animals, have mitochondria in some cells, but prokaryotes and some single-cell eukaryotes do not have mitochondria.
Answer:
1) Amphibians have smooth and moist skin while reptiles have dry and scales are present on their skin.
2) Amphibians lay eggs which are very soft so they are covered with a jelly like substance while reptiles also lays egg whose outer covering is tough.
3) Amphibians lays egg in the water while reptiles lays egg on the land.
Examples of amphibians are frog and salamander and examples of reptiles are snake and alligator.
Answer:
Genetics is a branch of science that deals with the study of genes, their sequence, function, variation, and heredity.
Increasing understanding of genetics help in making new fields of health care, for example,
- Gene therapy helps in treating various genetic diseases such as cystic fibrosis et cetera.
- Molecular genetics help in the development of more precise methods for diagnosis such as ELISA.
- Pedigree analysis and karyotypes help in early detection of possible hereditary diseases.
- DNA fingerprinting helps in detecting criminal suspects, paternity test, identification of dead organism et cetera.
