Examlex
Which of the following macromolecules enter the nucleus of a eukaryotic cell through pores in the nuclear membrane?
Spiracles
External respiratory openings found in some animals, such as insects and some amphibians, that allow air to enter and exit the trachea.
Tracheae
Tubes in the respiratory system that conduct air to and from the lungs.
Book Lungs
Respiratory organs found in certain arachnids, such as spiders and scorpions, consisting of stacked leaf-like structures used for gas exchange.
Malpighian Tubules
Excretory structures in insects and some arthropods that remove metabolic wastes from the body into the digestive tract for excretion.
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