The photo shows a type of animal. Which characteristic indicates that the organisms is an invertebrate?

A. It has radial symmetry
B. It has no back bone
C. It has an endoskeleton
D. It has bilateral

Which statement best addresses the differences in sex cell differentiation between the red-eared slider turtle and a human?

Prokaryotic and eukaryotic cells are different in many ways other than the presence or absence of a nucleus. if both archaebacteria and eubacteria are prokaryotic cells, then why are archaebacteria more closely related to eukaryotic cells than they are to eubacteria?

Which chemical reaction shows photosynthesis? a. water + carbon dioxide + sunlight → oxygen + glucose b. carbon + oxygen → carbon dioxide c. hydrogen + oxygen → water d. nitrogen + hydrogen → ammonia