Nucleotides can be radiolabeled before they are incorporated into newly synthesized dna and, therefore, can be assayed to track their incorporation. in a set of experiments, a student-faculty research team used labeled t nucleotides and introduced these into a culture of dividing human cells at specific times. which of the following questions might be answered by using the method described?
a. when do spindle fibers attach to chromosomes?
b. how many picograms of dna are made per cell cycle?
c. what is the length of the s phase of the cell cycle?
d. how many cells are produced by the culture per hour?

Four types of motile cells in human body?

What are the types of mutations, and how does each alter the encoded protein? college level answer

Which is an advantage of having memory cells when a pathogen is encountered for a second time. a) the memory cells are what proliferate into clones of cells in response to the binding of an antigen. b) memory cells are vital to the primary immune response in that they immediately recognize pathogens even at the first encounter. c) memory cells are essentially effector cells that are short lived and attack antigens even without having a receptor specific to that antigen. d) it ensures that more lymphocytes with a receptor specific to a particular antigen will be present than in a host that had never encountered that pathogen.