Answer:
The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not.
Prokaryotic Cell
Unicellular
Lysosomes and Peroxisomes absent
Microtubules absent
Endoplasmic reticulum absent
eukaryotic Cell
Multicellular
Lysosomes and Peroxisomes present
Microtubules present
Endoplasmic reticulum present
B. Mitochondrion. Centriole is unique to animal cells and is used in cell division. Chloroplast and Cell wall are unique to plants cells, together with permanent vacuole. Both have mitochondrion, where energy is released through respiration.
Parietal cells produce gastric acid (hydrochloric acid) in response to histamine (via H2 receptors), acetylcholine (M3 receptors) and gastrin (gastrin receptors). Parietal cells contain an extensive secretory network (called canaliculi) from which the HCl is secreted by active transport into the stomach.
If there's this picture in the question, the right answer is metaphase.
A metaphase qualifies a phase of meiosis or mitosis (following prophase and preceding anaphase) during which chromosomes, or at least kinetochores, align with the equatorial plate of the spindle. At this stage, chromosomes are at their maximum condensation and karyotypes are usually established. In the first division of meiosis, the metaphase represents the phase during which meiotic analysis is usually accomplished.
