Which cell organelle does not help to determine if a cell is a eukaryote: a nucleus, mitochondria, cell membrane, or chloroplast?

What are the formed elements (cell or parts of cell) in blood and what are their functions ?

Scenario #2 in 2001, a population of 2,500 poison dart frogs lived in the amazon rain forest. due to increased deforestation, the population dwindled to 25 frogs in 2019. new government regulations were enacted in 2022, successfully putting an end to the deforestation of the amazon rain forest. once deforestation was stopped, the poison dart frog population was able to recover. by 2050, the population reached 8,000 frogs, of that population, 20 are homozygous recessive for being spotted (ss genotype). q2- ? q- p- p2- 2pq-

If jane has the blood type ab and marries john who has type o blood what are the possible phenotypes of their first kid?