I think that one difference between eukaryotic and prokaryotic cells is that eukaryotic cells have membrane enclosed structures called organelles, which are lacking in prokaryotic cells. Eukaryotes can be single-celled or multicellular organisms like human beings, plants, fungi, and insects. Prokaryotes on the other hand include bacteria and archaea, they do not contain a nucleus or any other membrane bound organelles.
Answer:
The functional unit of a muscle cell is known as a "sarcomere" which covers the distance between the two Z-lines.
The sarcomere consists of A-zone which contains both thick and thin filaments, H-zone which contains only thick filaments and I band which contains only thin filaments.
During muscle contraction, thick and thin myofibrils slide over each other due to which the distance between two z-line get reduced.
The H and I zone gets shortened but A zone does not shorten but come close to other A- bands and disappears.
Answer: Serratus anterior muscle.
Explanation:
Answer:
Bacteria cells are very different from animal, plant or fungal cells. Bacteria cells don't have organelles such as nuclei, mitochondria or chloroplasts. Although they do have ribosomes and a cell wall, these are both different in structure to the ribosomes and cell walls in the cells above.
