PLEASE HELP EMERGENCY PLEASE!! You notice a green slime on your window. How would you know that it is living? Check all that apply.

It must be made of one or more cells

It must do cellular respiration

It must do photosynthesis

(This is 7th grade science)

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.

Imagine you are introducing the lac operan and the trp operon to students who have never learned about it before. complete the table to compare the similarities and differences between the two operons

What are the student's observations and inferences before he starts his investigation?