NEET TEST SERIES 154 BIOLOGY

1. Select the correct match with respect to infection and its causative agent:

(a) Gonorrhoea – Trichomonas
(b) Genital warts – Treponema
(c) Syphilis – Neisseria
(d) Tetanus – Clostridium

2.What is correct to say about the hormone action in humans?

(a) Glucagon is secreted by ẞ-cells of islets of Langerhans and stimulates glycogenolysis.
(b) Secretion of thymosin is stimulated with ageing.
(c) In females, FSH first binds with specific receptors on ovarian cell membrane.
(d) FSH stimulates the secretion of oestrogen and progesterone.

3. Select the correct statement.

(a) Morphine is extracted from the leaves of Cannabis sativa.
(b) Chikungunya and amoebic dysentery are both trans-mitted through mosquito as a vector.
(c) Anti-histamine, adrenaline and steroids quickly reduce the symptoms of allergy.
(d) T-lymphocytes act like an HIV factory

4. A plover bird and crocodiles have a particular interaction, that is:

(a) Commensalism   
(b) Protocooperation
(c) Mutualism
(d) Competition

5. In counter current mechanism, the concentration gradient in the medullary interstitium is mainly maintained by

(a) HCO, and K     
(b) NaCl and Hо
(c) NaCl and urea
(d) K’ and H

6. Which of the following is not observed during contraction of a muscle fibre?

(a) A bands retain the length.
(b) Shortening of sarcomere.
(c) I band gets reduced.
(d) H zene retains the length.

7. Read the following statements and choose the correct option.
Statement A: The most primitive of all craniates are jawless vertebrates.
Statement B: Cyclostomes have paired appendages and sucking circular mouth.

a) Both statements are correct.
b) Both statements are incorrect.
c) Statement A is correct but statement B is incorrect.
d) Statement A is incorrect but statement B is correct

8. In mammalian eye, the ‘fovea’ is the centre of the visual field where:

(a) High density of cones occur, but has no rods.
(b) The optic nerve leaves the eye.
(c) Only rods are present.
(d) More rods than cones are found.

9. All are functions of Sertoli cells except:

(a) Formation of blood testis barrier
(b) Secretion of smegma.
(c) Secretes Anti Mullerian Factor,
(d) Secretes Androgen Binding Protein.

10. Hypothalmic hormones are transported to neurohypophysis through:

(a) Portal vein
(b) Portal artery
(c) Axons
(d) Lymph vessel

11. What is the minimum number of plasma membrane that oxygen has to diffuse across to pass from air in the alveolus to haemoglobin inside a R.B.C.?

(a) Two
(b) Three
(c) Four
(d) Five

12. Choose the correct statement regarding mode of transmission of HIV?

a) Drug addicts have least chance to be infected with AIDS.
b) Individuals who need repeated blood transfusion, HIV can be transmitted by sharing needles.
c) Contaminated through saliva.
d) Biting through contaminated mosquito.

13. The genetic disease that transfers from a phenotypically. normal but carrier female to only some of the male progenies. The disease is:

a) Autosomal dominant
b) Autosomal recessive
c) Sex-linked dominant
d) Sex-linked recessive

14. Incorrect question formation:
Which of the following is correct in regards to the diluted urine in the excretory system of human beings?

a) Nearly 99% of the glomerular filtrate is reabsorbed by the renal tubules.
b) Ascending limb of the loop of Henle is impermeable to electrolytes.
c) Descending limb of loop of Henle is impermeable to water
d) Distal convoluted tubule is incapable of reabsorbing HCO

15. Which of the following is correct regarding throbin?

(a) It is a protein of primary structure
(b) converts solube fibrinogen of plasma into insoluble fibrin
(c) Converts insoluble fibrinogen into insoluble fibrin
(d) Converts fibrin into fibrinogen

16. If one kidney is removed what will be the immediate effect?

(a) The person will die due to lack of urine formation.
(b) Uremia and death.
(c) Death due to poisoning.
(d) The person may survive

17. Cardiac notch is present in:

(a) Superior lobe of right lung
(b) Inferior lobe of left lung
(c) Superior lobe of left lung
(d) Inferior lobe of right lung

18. The cartilage generally present on long bone terminals is:

(a) Hyaline cartilage
(b) Fibrous cartilage
(c) Hyaline and calcified cartilage
(d) Elastic cartilage

19. Poikilothermic animals having monocondylic skull and amnion belong to the class:

(a) Amphibia
(b) Reptilia
(c) Aves
(d) Mammalia

20. Name the cytokines which is released in response to virus infection.

(a) Monokines
(b) Lymphokines
(c) Interleukins.   
(d) Interferons