Scientists are studying cell-to-cell communication in a human spleen.
how would scientists most likely use technology during this study? check all that apply.
to draw a diagram showing how cellular communication occurs
to predict what stimulates cells to communicate with each other
to view cells under observation with an advanced microscope
to analyze cell signals used for communication with data software
to determine the number of visible cells by counting them

What is it called when part of a cell membrane closes around a molecule to allow the molecule to enter the cell? a. passive transport b. diffusion c. endocytosis d. exocytosisc. endocytosis

If 360 joules of work are needed to move and create a distance of 4 m what is the weight of the crate

According to the rna world hypothesis, rna acted as the genetic material and catalyzed reactions in ancient cells. what conclusion can you draw from this?               a.  this implies that dna and proteins aren't essential in cells today.    b.  this implies that rna can catalyze any chemical reaction that enzymes catalyze.    c.  this implies that if a cell has a problem with its dna, its rna can compensate for the damaged dna.    d.  this implies that dna and proteins evolved after rna.