Question

what is the answer for this question​

Answer 1

Explanation:

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1. The nucleoid is an irregularly shaped region within the prokaryotic cell that contains all or most of the genetic material. The chromosome of a prokaryote is circular, and its length is very large compared to the cell dimensions needing it to be compacted in order to fit
2. The eukaryotes developed at least 2.7 billion years ago, following some 1 to 1.5 billion years of prokaryotic evolution.
3. Theodor Schwann proposed cell theory. Credit for developing cell theory is usually given to two scientists: Theodor Schwann and Matthias Jakob Schleiden. While Rudolf Virchow contributed to the theory, he is not as credited for his attributions toward it.
4. 1655 – Hooke described 'cells' in cork. 1674 –. OR One observation was from very thin slices of bottle cork. Hooke discovered a multitude of tiny pores that he named "cells". This came from the Latin word Cella, meaning 'a small room' like monks lived in and also Cellulae, which meant the six sided cell of a honeycomb.
5. Cells have different shapes because they do different things. Each cell type has its own role to play in helping our bodies to work properly, and their shapes help them carry out these roles effectively. For example, neurons are very long, thin, branched cells.

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Answer 2

i). nucleoid is an irregular shaped region within the prokaryotic cells that contains all or most of the genetic material

ii) . prokaryotes arise at 3.5 billion years ago

and eukaryotes arise 2.7 billion years ago

iii) Theodore Schwann proposed the cell theory.

cell theory says that all cells arise from pre _ existing cell

iv) cell was first discovered by Robert hooke in 1665 .

v) cells have different shapes because they do different things . the shape of the cell have evolved to help them carry out their specific function in the body , so looking at the cell shape can give a clue what it does. red blood cell have doughnut shape.