NEET TEST SERIES 109 BIOLOGY

1. Frogs differ from humans in possessing

a) Nucleated red blood cell
b) Thyroid as well as parathyroid
c) Paired cerebral hemisphere
d) Hepatic portal system

2. Systemic heart refers to

a) Heart that contracts under stimulation from system
b) Left auricle and left ventricle in higher vertebrates
c) Entire heart in lower vertebrates
d) Two ventricles together in human being

3. Culture method where sterilized medium is continuously added and waste products are removed

(a) Closed culture
(b) Open culture
(c) Both A and B
(d) Neither A nor B

4. Asymptote in a logistic growth curve is obtained when

(a) r − value approaches zero
(b) K=N
(c) K>N
(d) K<N

5. Which of the following is not a steroid hormone?

a) Progesterone
b) Cortisol
c) Testosterone
d) Glucagon

6. Select the correct sequence regarding stages of pathway for conduction of an action potential through the heart.
1. AV bundle
2. Purkinje fibres
3. AV node
4. Bundle branches
5. SA node

Options:
(a) 2-4-5-3-1
(b) 5-1-4-2-3
(c) 5-3-1-4-2
(d) 1-5-3-2-4

7. Select the correct pair.

a) Heart – involuntary, unstriated
b) Iris- smooth, involuntary
c) Biceps- smooth
d) Abdominal wall- smooth

8. Which of the following is not a connective tissue?

(a) Glial cell
(c) Cartilage
(b) Blood
(d) Adipose tissue

9. Saddle joint is present between

a) Humerus and pectoral girdle
b) Atlas and axis
c) Carpal and metacarpal
d) Carpals

10. Which of the following is not a function of the skeletal system?

a) Locomotion
b) Storage of minerals
c) Production of body heat
d) Production of erythrocytes

11. Which one of the following diseases cannot be cured using antibiotics?

(a) Pneumonia
(b) Cholera
(c) Common cold
(d) Typhoid

12. Which of the following is correct regarding AIDS causative agent HIV?

a) HIV is enveloped virus containing one molecule of single stranded RNA and one molecule of reverse transcriptase.
b) HIV is enveloped virus that contains two identical molecules of single stranded RNA and two molecules of reverse transcriptase.
c) HIV is unenveloped retrovirus.
d) HIV does not escape but attacks the acquired immune response.

13. The antibody produced during allergic reaction is

(a) IgE
(c) IgG
(b) IgM
(d). Ig(d)

14. Assertion (A): Subsequent encounter with the same pathogen elicits a highly intensified anamnestic response.
        Reason (R): Our body appears to have memory of the first encounter of the pathogen.

a) Both A and R are true and R is the correct explanation of A.
b) Both A and R are true but R is not the correct explanation of A
c) A is true but R is false
d) A is false but R is true

15. Gullet or Cavity in cell which act as a mouth is present in which protozoan?

a) Flagellates
b) Ciliates
c) Amoeboids
d) Sporozoans

16. The given figure is


a) Implants
b) IUDs
c) Disposable contraceptive devices
d) Reusable contraceptive devices

17. To form embryo in vitro, the male gamete is transferred into female gamete directly. Such technique is called

(a) IUI
(b) IUT
(c) ICSI
(d) GIFT

18. 70 to 80 percent of electrolytes and water are reabsorbed in:

a) Distal convoluted tubule
b) Proximal convoluted tubule
c) Ascending limb of Loop of Henle
d) Descending limb of Loop of Henle

19. Which of the following does not favor the formation of large quantities of dilute urine?

(a) Alcohol
(b) Caffeine
(c) Renin
(d) Atrial-Natriuretic factor

20. Which of the following chordate character is found in adults of urochordates?

a) Pharyngeal gill clefts
b) Notochord
c) Post anal tail
d) All of these