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NEET Biology MCQS Mock Test Paper 14
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1. Nucleic acids are a polymer of nucleotide monomeric units. Each nucleotide consists of
base-sugar-OH
sugar-phosphate
base-sugar-phosphate
(base-sugar-phosphate)x
2. A DNA segment contains 100 Adenine and 100 cytosines; how many nucleotides are present in the segment?
100
200
400
50
3. Nucleoside contains
base-sugar
base-phosphate
base-sugar-phosphate
sugar-phosphate
4. ATP is a
nucleoside
nucleotide
vitamin
nucleic acid
5. Find the correct statement about phosphodiester linkage between adjacent nucleotides in nucleic acids
3’-phosphate of one nucleotide joins the 3’-hydroxyl of the next nucleotide
3’-phosphate of one nucleotide joins the 5’-hydroxyl of the next nucleotide
5’-phosphate of one nucleotide joins the 5’-hydroxyl of the next nucleotide
5’-phosphate of one nucleotide joins the 3’-hydroxyl of the next nucleotide
6. The sugar molecule present in nucleotide is
triose
tetrose
pentose
hexose
7. Which of the following nucleotide contains only ribose sugar and not deoxyribose?
Thymine – pentose sugar-phosphate
Uracil – pentose sugar-phosphate
Thymine – pentose sugar-phosphate
Cytosine – pentose sugar-phosphate
8. Purine base found in RNA is
Cytosine
Thymine
Guanine
Uracil
9. The cell wall of most of the fungi contains ________.
Hemicellulose
Chitin
Peptidoglycan
Cellulose
10. Absorptive heterotrophic mode of nutrition is present in_______.
Pteridophytes
Bryophytes
Fungi
Algae
11. Zygospore formation is a characteristic feature of_______.
Mucour/ Rhizopus
Puccinia
Alternaria
Penicillium
12. Asexual reproduction in Rhizopus is by the formation of_______.
Zygospores
Motile zoospores
Sporangiospores
Zoogametes
13. Which of the following class does Rhizopus belong to?
Ascomycetes
Chytridiomycetes
Deuteromycetes
Zygomycetes
14. ____ is commonly known as black bread mould.
Rhizobium sp
Rhizopus oryzae
Rhizopus nedosus
Rhizopus stolonifer
15. Sexual reproduction in Rhizopus takes place by fusion of_______.
Two sporangia
Two gametangia
Two gametes
Two hyphae
16. Mycelium of Rhizopus is
Aseptate and multinucleate
Septate and multinucleate
Aseptate and uninucleate
Septate and coenocyte
17. Meiosis occurs in the life cycle of Rhizopus during_______.
Asexual reproduction
Formation of gametangium
Germination of zygospores
Formation of sporangium
18. Asexual reproduction in Rhizopus is by the formation of_______.
Chlamydospores
Aplanospores
Sporangiospores
All of the above
19. Which of the following disease is caused due to the deficiency of iodine?
Solitary thyroid nodules
Goitre
Thyroiditis
Thyroid cancer
20. Which of the following is the main cause for Goitre?
Hypothyroidism
Hyperthyroidism
Cancer of the thyroid gland
All of the above
21. When the progressive enlargement of a multinodular goitre causes symptomatic tracheal compression; the typically preferred treatment management in otherwise good-risk patients is ____.
Radioactive iodine treatment
Thyroid hormone treatment
Iodine treatment
Surgical resection of abnormal thyroid
22. Which of the following is the most precise diagnostic screening procedure for differentiating benign thyroid nodules from malignant ones?
Thyroid scintiscan
Thyroid ultrasonography
Thyroid hormone suppression
Fine-needle-aspiration biopsy (FNAB)
23. Which of the following is the most common cause of goitrous hypothyroidism in adults?
Hashimoto’s disease
Grave’s disease
Riedel’s thyroiditis
De Quervain’s thyroiditis
24. A person with the enlarged thyroid gland protruded eyeball; increased BMR and weight loss is suffering from _______.
Grave’s disease
Exophthalmic goitre
Both (a) and (b)
Addison disease
25. Which of the following statement is incorrect about thyroid hormones?
Regulates BMR
Maintains water and electrolyte balance
Supports erythropoiesis
Controls blood phosphate level
26. Which of the following statement is true about thyroid swelling?
Always elevates on swelling
An ultrasound of the swelling is the best test to determine whether the nodule is actively secreting hormone
Lymph node enlargement is a good prognostic sign
A functional nodule on isotope scanning is unlikely to be due to cancer
27. Which of the following statement is true about Grave’s disease of the thyroid?
It is the cause for ophthalmoplegia
It is the cause for large multi-nodular goitre
In the past; grave’s disease sometimes caused ‘Derbyshire Neck’
It is most common in males than in females
28. Which of the following statement is true about complications of a large goitre?
Dysphagia is an indication for surgery
Causes stridor due to compression of the oesophagus
Causes hoarseness due to compression of the trachea
Causes more florid thyrotoxicosis than a smaller goitre
29. Mostly; the flesh of the fruit is made of ________.
Collenchyma
Meristem
Collenchyma
Parenchyma
30. In plants; the most common ground tissue is___________.
Cortex
Epidermis
Collenchyma
Parenchyma
31. From mature parenchyma; plant regeneration can occur as__________.
there are no cell walls
they are nucleate
they can dedifferentiate
it forms the bulk of the ground tissue
32. The plant tissues that are known for photosynthesis; secretion and storage are______.
Parenchyma
Collenchyma
Sclerenchyma
Vascular cambium
33. Simple permanent tissue that is food storing is ___________.
Parenchyma
Collenchyma
Scleroid
None
34. Which of the following statement is true about the spongy parenchyma?
Round or oval loosely arranged cells
Abaxially placed to palisade parenchyma
Continues to the abaxial epidermis
All of the above
35. Which of the following statement is true about the palisade parenchyma?
Elongated cells
Adaxially placed
Vertically and parallelly placed
All of these
36. The mesophyll of a dicot leaf is differentiated into _________.
Spongy parenchyma
Palisade parenchyma
Prosenchyma
Both (a) and (b)
37. In TS of the dicotyledonous root; the parenchymatous cells which lie between the xylem and phloem are called ________.
Cortex
Cambium
Connective tissue
Conjunctive tissue
38. Aerenchyma and chlorenchyma are types of ________.
Xylem
Phloem
Vascular bundle
Parenchyma
39. The enzyme required for transcription is
RNAase
DNA polymerase
RNA polymerase
Restriction enzymes
40. Transcription is the transfer of genetic information from
DNA to RNA
DNA to mRNA
mRNA to tRNA
tRNA to mRNA
41. Sigma factor is a component of
DNA ligase
DNA polymerase
Endonuclease
RNA polymerase
42. The main function of tRNA with regards to protein synthesis is
Proofreading
identifies amino acids and transports them to ribosomes
Inhibits protein synthesis
all of the above
43. One end of tRNA matches genetic code in three-nucleotide sequences known as
codon
genetic code
blunt ends
anticodon
44. The longest primary transcript is generated by
dystrophin gene
Tintin gene
neuromedin u
centromere protein A
45. A DNA sequence is read by an RNA polymerase that produces complementary antiparallel RNA strand known as
Hexa transcript
secondary transcript
primary transcript
tertiary transcript
46. Which of these subunits of RNA polymerase is totally required to initiate transcription?
alpha (α)
sigma (σ)
omega (ω)
beta (β)
47. In both prokaryotic and eukaryotic cells; the synthesis of protein chains is initiated with
Arginine
Methionine
Serina
Valine
48. In eukaryotes; in order to initiate transcription
RNA strand must be present
RNA polymerase must be present
Core promoter sequence must be present
None of these
49. The least level of chromosome organization is
30nm fibre
solenoid
nucleosome
none of the above
50. This has the largest number of chromosomes
Pisum sativum
Giant redwood tree
Haplopappus gracilis
Ophioglossum reticulatum
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