Lily is researching the light-sensing rod cells of the eye. she decides to use stem cells to produce new rod cells. which statement best explains why lily is using stem cells for this purpose?
a. specific genes in a rod cell’s dna can be activated to produce new stem cells.
b. specific genes in a stem cell’s dna can be activated to produce new rod cells.
c. all genes in a rod cell’s dna are activated, so new stem cells are produced each time the cell divides.
d. all genes in a stem cell’s dna are activated, so new rod cells are produced each time the cell divides.
e. none of the genes in a rod cell’s dna are activated, so new rod cells can be produced only from stem cells.

List charasteristics of athenosphere

The dna in a cell’s nucleus encodes proteins that are eventually targeted to every membrane and compartment in the cell, as well as proteins that are targeted for secretion from the cell. for example, consider these two proteins: phosphofructokinase (pfk) is an enzyme that functions in the cytoplasm during glycolysis. insulin, a protein that regulates blood sugar levels, is secreted from specialized pancreatic cells. assume that you can track the cellular locations of these two proteins from the time that translation is complete until the proteins reach their final destinations. for each protein, identify its targeting pathway: the sequence of cellular locations in which the protein is found from when translation is complete until it reaches its final (functional) destination. (note that if an organelle is listed in a pathway, the location implied is inside the organelle, not in the membrane that surrounds the organelle.)

Which of the following is a true statement? question 8 options: populations can't evolve, only individual organisms. individuals have adaptations that can change over time. individuals have traits that may or may not make them successful at reproduction. individuals evolve to have adaptations.