Skip to main content

Batrachospermum :Origin ,strucutre ,Thallus organisation and reproduction

By
                                              Batrachospermum Occurrence:-   (1) Batrachospermum is fresh water alga.    (2) It is found in clear, cool, and running streams.   (3) Deepwater plants are dark violet or reddish in color. But the shallow-water species are olive green.   (4) The intensity of light changes the color of pigments.   (5) The thallus is attached to the substratum. Vegetative structure  (1) The thallus of an adult plant is soft, thick, filamentous.  (2) It is freely branched and gelatinous.   (3) The central axis is made up of a single row of large cells. Whorls of branches of limited growth        are developed on this axis.  (4) These branches are filamentous and dichotomously arranged.  (5) The main axis is corticated. It consists of a row of elongated cylindrical cells....
Post a Comment

Molecular Basis of inheritance-NEET Questions

By

                         Questions of the molecular basis of Inheritance



Q.1. The isotopes used in the blender experiment are?

A. 32 S and 32 P
B. 32 S and 35 P
C. 35 S and 35 P
D. 35 S and 35 P

Ans: A

Q.2. Semi-conservative mode of replication was demonstrated first in?

A. Orchid Root
B. Bean root tip
C. E. Coli
D. Neurospora

Ans: B

Q.3. The enzyme which unwinds the double helix of DNA?

A. ligase.
B. helicase
C. polymerase
D. topoisomerase

Ans: B

Q.4. The Okazaki fragments are combined by an enzyme ?
A. Ligase
B. Helicase
C. polymerase
D. topoisomerase

Ans: A

Q.5. The inherited human disorder is called by Harrods is ?

A. Sex-linked inheritance
B. Sex influenced inheritance
C. Genetic disorder
D. inborn error of metabolism

Ans: D

Q.6. The step involved in protein synthesis is?

A. Transcription and translation
B. transcription and transformation
C. Transformation and translation
D. Transvision and Transition

Ans: A

Q.7. 60 s unit combined with eukaryotic RNA?

A. 28s RNA
B. 5s RNA
C. 5.8s RNA
D. All of these

Ans : D

Q.8. The intron is removed by the process?

A. Translation
B. Transcription
C. Replication
D. Splicing

Ans: D

Q9. The process takes before the translation is?

A.Capping of mRNA
B. RNA editing
C.  Polyadelyation
D.     All of these

Ans A

Q.10. The study material of Beadle and Tatum for providing gene metabolism is?

A. Neurospora
B. Lathyrus
C. Oenothera
D. Drosophila

Ans: A




Labels:

Comments

Post a Comment

Thanks

Popular posts from this blog

Classification and Characters of Polysiphonia

By
                                    Polysiphonia  Classification :-                                                          Division :- Rhodophyta                                            Class :- Florideophyaecae                                             Order :- Ceramiale s                                            Family :- Rhodomelaece                 ...
Post a Comment
Read more

Haloalkanes and Haloarenes - Definition, Method of preparation

By
Haloalkanes &Haloarenes Haloalkanes and Haloarenes may be classified as follow : On the basis number of halogen atoms:- Monohaloalkanes further classified according to the hybridization of the carbon atom to which the halogen is bonded. ( a)Compound containing Sp3 C---X Bond. Mono and Dihaloalkanes Alkyl Halide or Haloarenes: Allylic halide : Halogen attaches to the Sp2 carbon next to the Sp2 hybridized carbon. Benzylic halide : These are the compounds in which the halogen atom is bonded to an Sp3 hybridized carbon next to the aromatic ring. Vinyl halide : Halogen atom is bonded to Sp2 hybridized carbon atom of a carbon-carbon double bond (C=C). Aryl halide : Compounds in which halogen is bounded by Sp2 carbon the aromatic ring. Nature of C---X bond:  Halogen is more electronegative than carbon, the carbon halide bond of alkyl halide is polarized, carbon bears partially positive charge and halide bears a negative...
3 comments
Read more

Ectocarpus -Characterstics ,Thallus and Reproduction

By
                                   Ectocarpus                                               Superphylum:-Heterokonta                                               Class:-Phaeophyceae                                       ...
Post a Comment
Read more