In 1665, Robert Hooke, an English scientist, reported an interesting observation while looking through his microscope at a cork, "I took a good clear piece of cork, and with a penknife sharpened as keen as a razor, I cut a piece of it off, then examining it with a microscope, me thought I could perceive it to appear a little porous, much like a honeycomb, but that the pores were not regular."

a) What were the honeycomb units at which Hooke was looking?
b) What specific cell part was all that was left of the cork?

a) The honeycomb units that Robert Hooke was observing in the cork were the individual cells. Each cell of the cork appeared porous and had a structure resembling a honeycomb.

To answer this question, one can refer to Hooke's description of the observation he made with the microscope. By carefully reading and understanding the provided information, one can deduce that the honeycomb units being referred to are the individual cells of the cork.

b) The specific cell part that was all that was left of the cork, according to Hooke's observation, is the cell wall. Hooke described the cork cells as appearing "a little porous, much like a honeycomb, but that the pores were not regular." This indicates that the cell walls, which give structure and support to the cells, were still visible even though the rest of the cellular material may have been degraded or absent.

To determine this answer, one needs to analyze Hooke's description and identify the characteristics of the cork cells he observed. In this case, Hooke mentions the porous appearance, which suggests that the cell walls were intact and visible, while other cellular components may have been degraded.

its A, always A