24. carbon dioxide as a waste product produced by all the cells of your body. it leaves the cells and enters the blood that is passing by in the capillary. which of the following describes the pathway taken by carbon dioxide until it leaves the body?

(these all go left to right)

capillary- aorta- left atrium - left ventricle - lungs

capillary - vein - right atrium - right ventricle - lungs

capillary - aorta- right atrium- left atrium - lungs

capillary - vein- left atrium - left ventricle - lungs

The construction of phylogenetic trees is a mapping out the proposed divisions and common ancestors of all living species. traditionally, these trees have been built using morphological data, such as appearance and embryology. recently, it has been possible to construct these trees using molecular data. phylogenetic trees based on different types of information agree with each: that there is strong evidence of a real underlying common descent. this phylogenic tree is composed based on molecular data (rrna). what statements can we infer are true about the organisms throughout the tree? because the tree is rooted, all branches share a common ancestor. all organisms have some sort of cellular structure/organization. all eukaryotes evolved from bacteria. since the organisms contain rna, they share the same dna. if the organisms contain rna, the share the same four nitrogen bases.

Where would you expect to see seedless plants, such as ferns and mosses? a. in a botanical museum, because they are all extinct b. low and close to the ground in a moist environment c. climbing high while circling the branches of another plant d. deeply rooted in a forest with a trunk that reaches 20 meters or more

Classify the structures as homologous or analogous, depending on their structure and function.