Which of the following is not true concerning the phylum arthropoda? the nervous system is dorsal (back) and the circulatory system is closed and ventral (belly). they have bilateral symmetry. they posses a chitinous exoskeleton that must be shed during growth. the segmented bodies are arranged into regions, calledtagmata (e. g., head, thorax, abdomen).

If a cell's main function is to produce proteins to be excreted, which organelles would you expect to be larger

This is so important ugh its 25 points

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.