You have a series of cells, all of which were derived from tumors, and you first need to find out

which ones are malignant. what could you do?

a. see which ones are not overproliferating.

b. find out which ones have a higher rate of apoptosis.

c. karyotype samples to look for unusual size and number of chromosomes.

d. measure metastasis.

e. time their cell cycles.

How do ratio scale and diagrammatic scale work

What might explain the real-world results, show in the graph to the right, for one class of twenty students? check all that apply.

On a backpacking trip, kenny hikes all day at a steady pace, covering 30 kilometers and burning 4000 calories. at the school track, janelle runs the 100-meter sprint in 13.5 seconds, burning 10 calories. afterward, janelle’s leg muscles are aching and she is breathing hard, while kenny maintains normal breathing all day, even though he burns 400 times more calories than janelle. which two statements offer the best explanation for this phenomenon? a. if the aerobic pathway—cellular respiration—cannot meet the energy demand, then the anaerobic pathway—lactic acid fermentation—starts up, resulting in lactic acid buildup and "oxygen debt." b. aerobic cellular respiration produces more energy, but its use is limited because of lactic acid buildup in the muscles and the resulting "oxygen debt." c. after about 90 seconds of intense exercise, the muscles become depleted of oxygen, and anaerobic respiration can no longer function to produce atp, resulting in "oxygen debt." d. the rate of energy demand determines how the muscles will obtain energy, either from cellular respiration or from lactic acid fermentation if not enough oxygen is present.