Which of the following cells would not have a well-defined nucleus but would have a thick cell wall and ribosomes?

a. onion cell
b. e coli bacteria
c. human brain cell

Astudent is looking through a microscope at some cells of an onion root tip. many of these cells are undergoing division since the root tip grows quickly and requires more cells. which cell most recently underwent metaphase? w x y z

Some tools have graduations to show multiple measurements. for example, a ruler may have graduations for both millimeters and centimeters. when measuring the length of an earthworm, which graduations would allow for the most accurate measurement? millimeters centimeters decimeters meters

How do all types of diffusion/passive transport actually ‘work’ without using even the smallest amount of cellular energy?