Q.3) Answer the following questions. 3x2=6M 1. How are chromatin, chromatid and chromosomes related to each other? 2. Three students A, B and C prepared mixtures using chalk powder, common salt and milk respectively in water. Whose mixture: i) would not leave residue on filter paper after filtration? ii) would show Tyndall effect? iii) would give transparent/clear solution? iv) would settle down at the bottom when left undisturbed? 3. Draw a well labeled diagram of Plant cell 5M Q.4 Explain the terms : a) Plasma Membrane b) Cytoplasm c) Nucleus d) Golgi Apparatus e) Lysosomes
Answers
Answer:
Chromatin is the thread like structure which is genetic material of chromosomes consisting of DNA and protein. It is found in interphase stage of the mitotic cycle. Chromatid is the each single stand of duplicated chromosome, is attached with the other duplicate part with the centromere
Explanation:
2 i) I solutions C and B
ii) solution C
iii) solution A
iv) solution A
4) a) cell membrane which is selectively permeable ; allowing only some substance in. Binding the cell.
b) fluid inside the cell, which has many solid particles.
c) brain of the cell. Which has genetic material .
d) A Golgi body, also known as a Golgi apparatus, is a cell organelle that helps process and package proteins and lipid molecules, especially proteins destined to be exported from the cell. Named after its discoverer, Camillo Golgi, the Golgi body appears as a series of stacked membranes
d) sucidal bags of the cell. Which can digust the whole cell.