Abiologist is studying a structure that is made up of two layers of phospholipids what is she most likely studying

Which of these statements are true about scientific theories and hypothesis

How can we use spectral lines of light coming from the superclusters to identify which is receding from earth at the slowest rate.

Karen is a forensic scientist whose purpose is to identify and evaluate physical evidence. which of the following tasks does she perform? a. reporting results of scientific analysis b. interviewing suspects c. questioning witnesses d. preparing victims for burial