Answer:
the branch of biology and medicine concerned with the study of embryos and their development.
Explanation:
sorry if it is wrong!!!
Answer:
Organism I (circular chromosomes)
Explanation:
I can eliminate organisms II, III, and IV because these organisms have linear chromosomes therefore making it the most closely related to eukaryotes because they consist of linear chromosomes. My only other choice would be organism I, and since it has circular chromosomes we can conclude that this is the most distantly related to eukaryotes.
External respiration (correct answer) involves the exchange of oxygen and carbon dioxide within the environment.
The exchange of wastes through the skin is just called excretion by sweating.
There is no exchange of nutrients that occur in the lungs but rather absorption of nutrients is the function of the gastrointestinal tract.
The exchange of oxygen and carbon dioxide within the cell is called cellular respiration and involves carrying oxygen from the blood to the cell then the cell uses it as the final electron acceptor in the electron transport chain. The metabolic wastes of the cell, primarily carbon dioxide, goes now to the bloodstream to be exchanged for oxygen in the lungs.
