Created by StemPy LabA young plant cell grows and then matures, and its wall changes as it does. Which statement about the plant cell wall is correct?
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← Read the following statements about the nucleus and the chromosomes. (i) The outer membrane of the nuclear envelope usually stays continuous with the endoplasmic reticulum and bears ribosomes. (ii) Nuclear pores let RNA and protein molecules move in both directions between the nucleus and the cytoplasm. (iii) Chromatin contains DNA, some basic proteins called histones, some non-histone proteins and also RNA. (iv) In an acrocentric chromosome, the centromere lies exactly at one end of the chromosome. (v) Larger and more numerous nucleoli are present in cells that are actively carrying out protein synthesis. (vi) A single human cell has about 2 m of DNA, shared among 23 chromosomes. How many of the statements above are correct?Match the structures in List-I with their descriptions in List-II.
List-I (Structure)
A. Axoneme
B. Basal body
C. Hub
D. Central sheath
List-II (Description)
I. Centriole-like structure from which a cilium or a flagellum emerges
II. Proteinaceous central part of the proximal region of a centriole
III. Core of a cilium, with nine peripheral doublets and a central pair of microtubules
IV. Encloses the central microtubules of a cilium and is joined to the doublets by radial spokes →
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