Association of histones H1 with nucleosome shows
1. the occurrence of transcription
2.the occurrence of replication
3.exposed DNA double helix
4.the condensation of DNA into chromatin fibre
DNA replication is
1.conservative
2.conservative and discontinuous
3.semi-conservative and discontinuous
4. semi-conservative and semi-discontinuous
Find the incorrect statement
1.Agar-agar is produced from Gracilaria
2.Chlorella is used in space food
3.Mannitol is a food reserve of Rhodophyceae
4.Algin is produced by algae
Formation of a chemical bond results in
1.Increase in energy
2. Decrease in energy
3.Both
4.None of the above
Glenoid cavity articulates
1.Clavicle with acromion
2.Clavicle with scapula
3.Scapula with acromion
4. Humerus with scapula
Small discrete molecules are present in which of the substances?
1.Copper
2. CO
3.Dry ice
4.Graphite
Termination of replication is triggered by
1. DNA polymerase
2.Helicase
3. SSB
4.Tus protein
The joint between 1st and 2nd cervical vertebrae
1.Gliding joint
2.Saddle joint
3. Pivot joint
4.Hinge joint
The joint in our elbow is an example of
1.hinge joint
2.ball and socket joint
3.pivot joint
4.gliding joint
Which of the following enzymes separates the two strands of DNA during replication?
1. Gyrase
2. Topoisomerase
3.Helicase
4. DNA polymerase
Which of the following has non-flagellated isogamous gametes?
1.Spirogyra
2. Chlamydomonas
3.Volvox
4.Fucus
Which of the following has the weakest bond?
1. Ice
2. Diamond
3.KCl
4. Neon
Which of the following is used in DNA replication studies?
1.Neurospora crassa
2.Drosophila melanogaster
3. Escherichia coli
4.Pneumococcus
Which of the following joints does not allow any movement?
1. Synovial joint
2.Fibrous joint
3.Ball and Socket joint
4.Cartilaginous joint
Which one of the following is a colonial alga?
1.Ulothrix
2.Spirogyra
3. Volvox
4.Chlorella
DNA polymerase synthesizes
1.DNA in 5’-3’ direction
2. DNA in 3’-5’ direction
3. mRNA in 3’-5’ direction
4.mRNA in 5’-3’ direction
During replication, Okazaki fragments elongate
1.leading strand towards the replication fork
2. lagging strand towards the replication fork
3. leading strand away from the replication fork
4.lagging strand away from the replication fork
Find the correct pair
1. Gliding joint – between carpals
2.Cartilaginous joint – between frontal and parietal
3.Hinge joint – between humerus and pectoral girdle
4.Pivot joint – between third and fourth cervical vertebrae
Find the correctly matched pair
1.Fibrous joint — between phalanges
2.Cartilaginous joint — skull bones
3. Gliding joint — between zygapophyses of the successive vertebrae
4.Hinge joint — between vertebrae
Humans have ________ joint between sternum and ribs
1. gliding
2.angular
3.cartilaginous
4.fibrous
In a crystal, covalent molecules are held together by
1.Dipole-dipole attraction
2. Hydrogen bonds
3.Van der Waals attraction
4. Electrostatic attraction
The Atoms of solid Ar are held together by
1. Van der Waals forces
2.Hydrogen bonds
3.Ionic bonds
4.Hydrophobic forces
Mannitol is a reserved food found in
1.Gracillaria
2.Porphyra
3.Chara
4. Fucus
Metallic bonds do not have
1.Highly directed bonds
2. Mobile valence electrons
3. Delocalised electrons
4.Overlapping valence orbitals
Particles in an ionic crystals are held together by
1.Nuclear forces
2.Electrons
3.Covalent bonds
4.Electrostatic forces
Ribs and sternum are connected by
1.Areolar tissue
2. Hyaline cartilage
3.White fibrous cartilage
4. Bony matter
The 3’ – 5’ phosphodiester linkage joins
1.two DNA strands
2.two nucleotides
3.a nitrogenous base with pentose sugar
4. two nucleosides
The fragments of DNA are joined together by which of the following enzymes?
1. Endonuclease
2.DNA polymerase
3. Primase
4. Ligase
The joint between atlas and axis is
1.Saddle joint
2.Angular joint
3.Pivot joint
4. Cartilaginous joint
The type of joint between the skull bones is
1. Fibrous
2.Cartilaginous
3.Synovial
4.Hinge
Which of the compounds shows the highest lattice energy?
1.CsF
2. KF
3. RbF
4. NaF
Which of the following has both covalent and ionic bonds?
1. NaOH
2. KCl
3.CH4
4.SO2
Which of the following helps in opening of DNA double helix in front of replication fork?
1.topoisomerase
2.DNA polymerase-I
3. DNA gyrase
4.DNA ligase
Which of the following is the weakest bond?
1.Ionic bonds
2.Metallic bonds
3.Covalent bonds
4.Van der Waals forces
Which of the following shows zygotic meiosis?
1. Chlamydomonas
2. Marchantia
3. Funaria
4.Fucus