Xander examines several microscope slides showing stages of the cell cycle in onion cells. On one slide, he notes that the cell does not have chromosomes. The genetic material appears to be a tangled ball of string. What stage of the cell cycle is he observing?

Which of these is an example of pseudoscience? a) predicting the time of sunrise based on data on position of earth b) predicting the date of the moon phases based on data on position of earth c) predicting eclipses based on the position of the sun and the moon d) predicting future events in a person's life based on the position of the moon

How many oxygen atoms are there in 3.15 moles of hcl manganese (iv) oxide, mno2

Which change will decrease the number of effective collisions during a chemical reaction? a. adding a catalyst b. increasing the surface area c. decreasing the temperature d. increasing the reactant concentrations e. increasing the volume of the reactants