The common feature of mitochondria and plastids

  • both are double membranous cell organelles

  • Both contains 70s ribosomes

  • both have dsDNA

  • All of the above

A number of organised flattened membranous sacs are called

  • thylakoids

  • starch granules

  • Quantasomes

  • None of these

Chromatin can be stained with

  • Basic dyes

  • neutral dyes

  • acidic dyes

  • Crystal violet

Chromatin can be observed in

  • Interphase nucleus

  • dividing nucleus

  • Both A and B

  • Nuclei of any stage

Through the nuclear pore the movement of _____and ______takes place

  • RNA and proteins

  • DNA and RNA

  • DNA and proteins

  • RNA and carbohydrates

Nucleus is absent in

  • erythrocytes of mammals

  • sieve tube cells of Vascular plants

  • Both A and B

  • Companion cells of vascular bundle

Which of the following is true about nucleolus?

  • membrane less structure

  • active site for rRNA synthesis

  • numerous in cells which are involved in protein synthesis

  • All of the above

Which of the following is true about chromosome

  • nucleoprotein

  • 23 pairs in single human diploid cell

  • Contains primary constriction

  • All of these

On what basis chromosomes have been divided into four classes.

  • position of centromere

  • position of primary constriction

  • number of kinetochores

  • Both A and B

In which of the chromosomes two equal arms are present

  • sub-metacentric chromosome

  • metacentric chromosome

  • acrocentric chromosome

  • telocentric chromosome

Which of the following chromosome is absent in human beings

  • sub-metacentric chromosome

  • metacentric chromosome

  • acrocentric chromosome

  • telocentric chromosome

Satellite body is formed in chromosome because of

  • primary constriction

  • secondary constriction

  • Centromere

  • Both A and C

The enzyme present in lysosomes belong to the class ______ & acidic condition inside is maintained by ______

  • Oxidoreductases, pumping protons

  • Hydrolases, secretion of acids

  • Hydrolases, pumping of protons

  • Lyases, removal of protons

Which of the following statement is not concerned with fluid mosaic model of plasma membrane?

  • Phospholipid forming a water resistant barrier

  • Glycocalyx at inner surface

  • Mosaic pattern of proteins

  • More extrinsic protein at inner surface

Which of the following is not a microtubular organelle?

  • Centriole                  

  • Cilia

  • Basal body              

  • Dalton complex

Select the incorrect statement w.r.t. prokaryotic cells

  • Cytoplasm lacks membrane bound organelles

  • Sap vacuoles are absent

  • Chromosome possesses acidic protein i.e., polyamine

  • Lack streaming movement of cytoplasm

In human beings, the membrane of erythrocyte has

  • Approximately 40% proteins and 52% lipids

  • Cephalin on the outer side and lecithin on the inner side

  • Approximately 52% proteins and 40% lipids

  • Lecithin on the outer side and cephalin on the inner side

A number of proteins synthesized by ribosomes on the endoplasmic reticulum are modified in the ______ of the Golgi apparatus before they are released from its trans face

 

  • Tubules

  • Vesicles

  • Cisternae

  • More than one option is correct

How many microtubules are associated with the structure of centriole?

  • 9                             

  • 18

  • 27                           

  • 11

Granular endoplasmic reticulum is associated with which of the following functions?

  • Synthesis of secretory as well as non-secretory proteins

  • Synthesis of non-secretory proteins

  • Synthesis of steroidal hormones

  • Synthesis of secretory proteins

Which of the following plastids store fats?

 

  • Elaioplast                

  • Aleuroplast

  • Proteinoplast           

  • Amyloplast

In plants, which of the following microbody is involved in photorespiration?

  • Peroxisome             

  • Sphaerosome

  • Glyoxysome            

  • Ribosome

Which of the following cellular organelles is/are bound by a single membrane?

        Peroxisomes, lysosomes, mitochondria

 

  • Only peroxisomes but not lysosomes and mitochondria

  • Both peroxisomes and lysosomes but not mitochondria

  • All of the three organelles

  • None of the three organelles

Ribosomes attach to ER by its

 

  • 50 S subunit            

  • 60 S subunit

  • 40 S subunit            

  • 30 S subunit

All are membrane bounded cell organelles in a typical plant cell, except

  • Mitochondria           

  • Lysosome

  • Ribosome               

  • Chloroplast

Plasmodesmata connections help in

  • Cytoplasmic streaming

  • Mitotic division

  • Movement of substances between the cells

  • Osmosis only

A nuclear pore allows

  • Unidirectional movement of DNA

  • RNA movement only

  • RNA and protein movement

  • Protein movement only

Correct statement in relation to vacuoles is

  • It is a triple membrane bound space found in cytoplasm containing sap

  • It can occupy 90% of cell volume in plants

  • Its membrane allows transport of materials along the concentration gradient only

  • Concentration of ions is significantly lesser in vacuole than cytoplasm

Find out the incorrect statement

  •   Middle lamella is mainly made up of Ca-pectate

  •   Cell wall is formed from inner side therefore secondary wall formed before primary wall

  •   Middle lamella glues the different neighbouringcells together

  • Pits are present in secondary wall

Vesicles from ER fuse with

  • Maturing face of golgi body

  • Forming face of golgi body

  • Primary lysosome for intercellular digestion

  • Plasma membrane to remove them out from cell

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