There are two competing hypotheses put forth to explain the origin of eukaryotic cells. which of the following correctly states one of these hypotheses? question options:

ancient eukaryotic cells resembling archaeal cells first acquired symbiotic cyanobacteria that eventually took up permanent residence to become chloroplasts.
a symbiotic relationship between cyanobacteria and proteobacteria created the first ancient eukaryotic cell.
two types of prokaryotic cells, one of which was photosynthetic, fused to become the first ancient eukaryotic cell.
ancient eukaryotic cells resembling archaeal cells first acquired symbiotic bacteria that eventually took up permanent residence to become mitochondria.

The image shows ekgs of a person with normal heart waves and of a person having tachycardia. based on this image, what kind of condition is tachycardia? a. the heart beats abnormally fast. b. the heart beats abnormally slow. c. the right atrium of the heart stops working. d. the left ventricle pumps less blood to the aorta.

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.)

What sre the effects of hemolytic disease of a newborn