You are experimenting with cell division on the root cells in an allium cepa plant in your lab. before they can divide the dna must be copied, but the cells seem to only be copying part of the dna and stopping. which material might the cell not have enough of to replicate its dna?
a. uracil
b. ribosomes
c. cytosine
d. triglycerides

Johnny rode his bike 4 blicks down the street to his friend's house once he got to his friend house and realized he could not cone out to play he turned aroubd and went back home.what is displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point

Pl which diagram illustrates prophase?

Astudent wants to test the hypothesis that fertilizer improves the growth rate of grass seeds. to test this hypothesis, the student put the same amount of grass seed in 3 containers with the same type of soil. the student measured the growth at the end of the week. all plants received equal amounts of water and sunlight. if you were asked to graph this data, what would you place on the x-axis? a. fertilizer b. water c. plant growth d. week one