Created by StemPy LabRead the following statements about prokaryotic cells. (i) The genetic material is not enveloped by a nuclear membrane. (ii) The 70S ribosome is formed from a 50S and a 30S subunit. (iii) Mesosomes help in cell wall formation, and in DNA replication and its distribution to daughter cells. (iv) Inclusion bodies, such as glycogen granules, are bounded by a single membrane. (v) Every prokaryote has a cell wall around its cell membrane. (vi) Pili and fimbriae are the structures with which bacteria swim. How many of the statements above are correct?
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← Match the scientists in List-I with their work in List-II.
List-I (Scientist)
A. Camillo Golgi
B. George Palade
C. Singer and Nicolson
D. Flemming
List-II (Work)
I. Proposed the fluid mosaic model of the cell membrane
II. Saw densely stained reticular structures near the nucleus
III. Gave the name chromatin to the material of the nucleus stained by basic dyes
IV. First saw ribosomes as dense particles under the electron microscopeTwo statements about the bacterial cell envelope are given below.
Statement I: Bacteria are grouped as Gram positive or Gram negative from the differences in their cell envelopes and the way they respond to Gram's staining.
Statement II: In some bacteria the glycocalyx is a loose sheath called the capsule, while in others it is thick and tough and is called the slime layer. →
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