NEET Biology | Daily MCQs Practice Questions | 29 July 2024 | NEET Exam
Engage with NEET Biology Daily MCQs Practice Questions for NEET exam preparations through daily updated online quiz (29 July 2024).
1. Question
Number of chromatids in chromosome at metaphase is :-
Two each in mitosis and meiosis
Two in mitosis and one in meiosis
Two in mitosis and four in meiosis
One in mitosis and two in meiosis
Correct Answer
Wrong Answer
2. Question
Following are the events occurs during meiosis:
(A) Appearance of chiasmata
(B) Synapsis
(C) Assembly of meiotic spindle
(D) Use of recombinase enzyme
Choose the correct sequence :-
A → B → C → D
B → D → A → C
D → C → B → A
B → C → A → D
Correct Answer
Wrong Answer
3. Question
Best stages to study morphology and shape of chromosome are respectively
Metaphase, Telophase
Prophase, Anaphase
Telophase, Anaphase
Metaphase, Anaphase
Correct Answer
Wrong Answer
4. Question
In a protein chain the first amino acid is also called :-
N – terminal amino acid
C – terminal amino acid
Both of them
Valine
Correct Answer
Wrong Answer
5. Question
True statement for cellulose molecule -
β - 1'- 4" linkage, unbranched
β - 1'- 4" linkage, branched
α - 1' - 4" linkage, branched
β - 1' - 6" linkage, unbranched
Correct Answer
Wrong Answer
6. Question
Glycerol is also known as :-
Dihydroxy ethane
Trihydroxy propane
Tetrahydroxy butane
Trihydroxy methane
Correct Answer
Wrong Answer
7. Question
In gel electrophoresis, all the DNA fragments move towards the base of the gel with variable velocity because :-
DNA is negatively charged
DNA is possitively charged
DNA fragments have different molecular weight
(1) & (3) both
Correct Answer
Wrong Answer
8. Question
In a vector which of the following is helpful in selection of transformants ?
Restriction site
Origin of replication point
Selectable marke
Cloning site
Correct Answer
Wrong Answer
9. Question
Statement-I : Biolistic method is used for gene transfer in plant.
Statement-II : DNA is coated on Gold and Tungsten Particle in Gene Gun method.
Both Statement-I and Statement-II is incorrect.
Statement-I is correct but Statement-II is incorrect.
Statement-I is incorrect but Statement-II is correct.
Both Statement-I and Statement-II are correct.
Correct Answer
Wrong Answer
10. Question
If a pBR322 vector is cut by Pst I enzyme then which of its marker gene shows insertional inactivation-
TetR gene
AmpR gene
Gal gene
Rop gene
Correct Answer
Wrong Answer
11. Question
DNA or RNA fragment tagged with a radioactive molecule is called :
Clone
Plasmid
Vector
Probe
Correct Answer
Wrong Answer
12. Question
Transgenic tobacco which is developed through RNA interference, prevent the infestation of :
A nematode – Meloidegyne incognitia
A bacterium – Pseudomonas putida
A fungi – Trichoderma
A insect – Aphid
Correct Answer
Wrong Answer
13. Question
The problem of blindness in poor countries can be overcome by using :-
Golden rice
Transgenic maize
Transgenic Tomato
Bt Brinjal
Correct Answer
Wrong Answer
14. Question
Which statement is wrong for RNA interference?
RNAi takes place in all prokaryotic organisms as a method of cellular defence.
This method involves silencing of a specific mRNA due to a complementary ds RNA.
The source of complementary ds RNA could be from a mobile genetic element (transposons) that replicate via RNA intermediate.
Agrobacterium vectors can be used to transfer gene which induce RNAi.
Correct Answer
Wrong Answer
15. Question
Indian government organisation which make decision regarding validity of GM research and safety of introducing GMO for public services is:-
IARI
GEAC
CDFD
Eli lily
Correct Answer
Wrong Answer
16. Question
Which of the following is not the use of transgenic animals;
Study of normal physiology and development
Testing of vaccine safety
Production of biological products
Molecular diagnosis
Correct Answer
Wrong Answer
17. Question
Feather like gills are present in :-
Annelida
Echinodermata
Hemichordata
Mollusca
Correct Answer
Wrong Answer
18. Question
Which is correctly matched in the given table?
| Group | Number of chambers in Heart | Type of circulation | Blood is oxygenated by |
|---|---|---|---|
| 1. Fish | 1 | single | Gills |
| 2. Amphibia | 3 | incomplete double circulation | Lungs |
| 3. Reptiles | 3 | Complete Double circulation | Gills |
| 4. Birds | 4 | Double circulation | Cloaca/Skin |
1
2
3
4
Correct Answer
Wrong Answer
19. Question
Which blood vessel is carrying least CO2 ?
Vena cava
Hepatic vein
Pulmonary vein
Pulmonary artery
Correct Answer
Wrong Answer
20.
Pons varoli is characterised by a centre called :
Hunger centre
Thirst centre
Cardiac acceleratory centre
Pneumotaxic centre
Correct Answer
Wrong Answer
21. Question
Assertion (A) : The immune responses of old persons become weak.
Reason (R) : Thymus is degenerated in old individuals resulting in a decreased production of thymosins
If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.
If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.
If Assertion is True but the Reason is False.
If both Assertion & Reason are False.
Correct Answer
Wrong Answer
22. Question
Anatomical unit of muscle is :
Sarcomere
Myofibril
Muscle fibre
Actin and myosin
Correct Answer
Wrong Answer
23. Question
Statement I : The regions inside the seminiferous tubules called interstitial space contain Leydig cells.
Statement II : Leydig cells of testis synthesise and secrete testicular hormones called androgens.
Both Statement I and Statement II are incorrect
Statement I is correct but Statement II is incorrect
Statement I is incorrect but Statement II is correct
Both Statement I and Statement II are correct
Correct Answer
Wrong Answer
24. Question
How many of the below are incorrect about given diagram :-
(a) Gives cell mediated immunity
(b) T-cells themselves do not secrete but help B-cell to produce them.
(c) Disulphide bond present
(d) H2L2 molecule
(e) Protein molecule
One
Two
Three
Four
Correct Answer
Wrong Answer
25. Question
One of the biggest land reptiles were dinosaurs, out of which ______________ was about 20 feet in height and had huge fearsome dagger like teeth.
Triceratops
Tyrannosaurusrex
Argentinosaurus
Brachiosaurus
