CELL BIOLOGY UPTO CHROMOSOMES ASSIGNMENT

1	The statement that protoplasm as active centre for various biological processes was given by Dujardin Corti Purkinje Von Mohl Ans:Von Mohl
2	[A]: Protoplasm shows Brownian movement [R]: It has about 85 – 90% of water Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:Both A and R are true but R is not the correct explanation of A
3	Choose the incorrect statement with respect to protoplasm Polypeptides are most abundantly present organic compounds. Protoplasm is coagulated at 60°C because it has 88% of water When protoplasm is exposed to a light beam it reflects some of the light The pH of protoplasm is sometimes 7.2 Ans:Protoplasm is coagulated at 60°C because it has 88% of water
4	According to Trilamellar model The plasma membrane has biprotein layer sandwitched between slices of lipids Protein and lipid monolayers are alternately arranged Protein and Lipid molecules are arranged in a total of 4 tiers The thickness of each monolipid layer is 35A° Ans:Protein and Lipid molecules are arranged in a total of 4 tiers
5	Cytosol is devoid of I. Enzymes II. Ribosomes III. Vacuoles I and II II and III I and III I, II, III Ans:II and III
6	The double membrane bound cell organelles of typical eukaryotic plant cell are I. Mitochondria II. Golgi complex III. Endoplasmic reticulum IV. Nucleus I and II II, III, IV I and IV All Ans:I and IV
7	[A]: Blue-Green algae do not have plastids [R]: They lack photosynthetic pigments Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:A is true but R is false
8	Endosperm of cereals has I. Elaioplasts II. Aleuroplasts III. Amyloplasts IV. Chromoplasts only III I, II, III II, III All except I Ans:II, III
9	According to Fluid Mosaic model, the matrix of cell membrane is mainly made of Oligosaccharides Proteins Phosopholipids Glycolipids Ans:Phosopholipids
10	Match the following A - V, B - IV, C - III, D - I A - V, B - III, C -II, D - I A - IV, B - V, C - II, D - III A - V, B - IV, C - III, D - II Ans:A - V, B - IV, C - III, D - II
11	Study the following table and choose the correct combination I and II II and III III and IV I, II, III Ans:II and III
12	Arrange the following events in correct chronological order of their discovery I. Trilamellar model II. Plastids III. Nucleus IV. Fluid Mosaic model II, III, I, IV III, II, I, IV II, III, IV, I III, II, IV, I Ans:II, III, I, IV
13	[A]: Chloroplasts are described as semiautonomous cell organelles [R]: Green plastids have their own DNA and ribosomes and can synthesize all of their proteins Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:A is true but R is false
14	The first discovered living cell was Cell of Quercus suber Prokaryote RBC Protozoan cell Ans:Prokaryote
15	The microscope with high resolution is Phase contrast Microscope Flurescence Microscope Compound Microscope Electron Microscope Ans:Electron Microscope
16	The cell wall material distributed in all the three layers of cell wall is Cellulose Hemicellulose Cutin Pectin Ans:Pectin
17	Match the following A - III, B - V, C - IV, D - I A - V, B - III, C - IV, D - II A - III, B - IV C - II, D - I A - III, B - V, C - IV, D - II Ans:A - III, B - V, C - IV, D - I
18	[A]: Flurescence microscope is a light microscope [R]: Visible light is used to observe the object Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:A is true but R is false
19	Cell walls of isolated cells lack Primary wall Secondary wall Middle lamellum Pits Ans:Middle lamellum
20	Torus is thickened portion of Primary wall Secondary wall Middle lamellum Middle lamellum of Pit region Ans:Middle lamellum of Pit region
21	Cell wall material not deposited by intussusception is Pectin Lignin Cutin Cellulose Ans:Cellulose
22	Cellulose forms the frame work of I. Middle lamellum II. Primary wall III. Secondary wall I and II II and III only II I, II, III Ans:II and III
23	[A]: Chromosomes are stained with basic dyes [R]: They have basic proteins known as Histones Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:Both A and R are true but R is not the correct explanation of A
24	The plant with longest normal chromosomes belongs to series Thalamiflorae Calyciflorae Coronariae Bicarpellatae Ans:Coronariae
25	Hofmeister observed the chromosomes of Mitotic stage Interphase Meiotic stage Cytokinesis stage Ans:Meiotic stage
26	Arrange the following in a sequence of gradual increase in their chromosomal number I. Primary Endosperm Nucleus of Gossypium hirsutum II. Egg cell of Saccharum III. Sperm cell of Nicotiana IV. Colchicine treated Allium meristematic cell III, IV, I, II III, II, IV, I III, IV, II, I IV, III, II, I Ans:III, IV, II, I
27	Identify the group with similar chromosome number Triploid Allium, diploid Oryza, haploid Nicotiana Pentaploid haplopappus, Haploid Maize, Haploid Oryza Tetraploid Oryza, Hexaploid Allium, Diploid Gossypium Tetraploid Zea, Haploid Saccharum, Triploid Pisum Ans:Triploid Allium, diploid Oryza, haploid Nicotiana
28	Karyotype does not indicate Position of secondary constriction Size of chromosomes Types of genes present in a chromosome Number of chromosomes in a cell Ans:Types of genes present in a chromosome
29	In a metaphasic chromosome the ratio between the number chromatids and chromosomal arms is 1:1. The chromosome must be Metacentric Telocentric Sub-metacentric Acrocentric Ans:Telocentric
30	Heteropycnosis refers to Differential staining nature of chromosome Non-uniform coiling of chromonema Differential distribution of Histone proteins in the chromosome Presence of chromosomes of different sizes in a genome Ans:Differential staining nature of chromosome
31	Study the following table and choose the correct combination I and II III and IV I and IV II and III Ans:I and IV
32	[A]: Histones are basic proteins [R]: Core proteins of nucleosome are rich in aminoacids Argenine and Lysine Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:Both A and R are true and R is the correct explanation of A
33	Nucleolar organizer is Secondary constriction I Secondary constriction II Primary constriction II Primary constriction I Ans:Secondary constriction I
34	The following histone is present outside the nucleosome H2A H4 H3 H1 Ans:H1
35	The total number of chromatids seen in Metaphasic meristematic cell of Pisum is 14 28 56 16 Ans:28
36	The set/s having cell organelles with morphologically similar structures are I. Mitochondrion – Golgi complex II. Golgi complex – Endoplasmic reticulum III. Endoplasmic reticulum - Mitochondrion Only I I, II, III only II II and III Ans:only II
37	Cell organelles that can give rise other cell organelles are Nucleus, Vacuole Mitochondrion, Endoplasmic reticulum Endoplasmic reticulum, Golgi complex Peroxisomes, Glyoxysomes Ans:Endoplasmic reticulum, Golgi complex
38	Match the following A - III, B - IV, C - II, D - I A - III, B - V, C - II, D - I A - V, B - III, C - I, D - II A - III, B - IV, C - V, D - II Ans:A - III, B - V, C - II, D - I
39	Study the following table and choose the correct combination I and II II,III, IV All except IV All Ans:All except IV
40	[A]: Nucleus is brain of the cell [R]: It has master molecule that has all the genes of genome Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:Both A and R are true and R is the correct explanation of A