NEET (Zoology MCQs)
Categories: Multiple Choice Question
Q.1. Which of the following statements is a characteristic of a contraceptive method?
- Effective only for a maximum period of six months after delivery.
- Side effects are almost nil.
- Chances of failure are high.
(1) Periodic abstinence
(2) Lactation amenorrhea
(3) Vaults
(4) Non-medicated IUD
Ans. (2) Lactation amenorrhea
Q.2. Choose the incorrect statement regarding transport of oxygen.
(1) O2 can combine reversibly with haemoglobin to form oxyhaemoglobin.
(2) Binding of oxygen with haemoglobin is mainly related to the partial pressure of O2.
(3) Each Hb molecule can carry a maximum of six molecules of O2.
(4) Under normal physiological conditions every 100ml of oxygenated blood can provide about 5ml of O2 to the tissue.
Ans. (3) Each Hb molecule can carry a maximum of six molecules of O2.
Q.3. Immunologically competent cells are present in;
(1) Testicular reticulum.
(2) Interstitial space.
(3) Seminiferous tubules.
(4) Epididymis.
Ans. (2) Interstitial space.
Q.4. 'A' and 'B' belong to phylum 'C' which is characterised by triploblastic and segmented worms. 'A' is marine and bisexual while 'B' is terrestrial and dioecious.
Choose the correct option for A, B and C respectively
|
A |
B |
C |
|
|
(1) |
Hirudinaria |
Nereis |
Annelida |
|
(2) |
Ancylostoma |
Nereis |
Platyhelminthes |
|
(3) |
Aplysia |
Nereis |
Aschelminthus |
|
(4) |
Nereis |
Pheretima |
Annelida |
Ans. (4)
|
(4) |
Nereis |
Pheretima |
Annelida |
Q.5. The vector pBR322 has the desired gene inserted at the BamHI recognition site. To select the recombinants, plating should first be done by;
(1) Medium containing ampicillin.
(2) Medium containing galactosidase.
(3) Medium containing chromogenic substrate.
(4) Medium containing tetracycline.
Ans. (1) Medium containing ampicillin.
Q.6. The sequence which is responsible for controlling the copy number of DNA linked in a vector is called;
(1) Recognition site.
(2) Selectable marker.
(3) Ori site.
(4) Palindromic sequence.
Ans. (3) Ori site.
Q.7. Choose the incorrect statement regarding human circulatory system.
(1) Chordae tendinae are present in both the ventricles of the heart.
(2) Hepatic portal circulation system is present between the digestive system and the liver.
(3) The heart is myogenic as it is automatically controlled by specialized nervous tissues.
(4) Stimulation by sympathetic nerve fibres increases the heart rate.
Ans. (3) The heart is myogenic as it is automatically controlled by specialized nervous tissues.
Q.8. From the following cellular barriers of innate immunity, choose the odd one.
(1) PMNL - neutrophils.
(2) Monocytes.
(3) Natural killer cells.
(4) Interferons.
Ans. (4) Interferons.
Q.9. Which of the following types of helix is predominantly observed in proteins?
(1) Left-handed only
(2) Right-handed only
(3) Both (1) and (2)
(4) Beta-helix
Ans. (2) Right-handed only
Q.10. In a chemical synapse, when an impulse arrives at the axon terminal, it;
(1) leads to the opening of calcium channels in the post-synaptic membrane.
(2) stimulates the fusion of synaptic vesicles towards the pre-synaptic membrane.
(3) causes the binding of the neurotransmitter to its receptor on the post-synaptic neuron.
(4) activates the opening of potassium channels in the axon terminal
Ans. (2) stimulates the fusion of synaptic vesicles towards the pre-synaptic membrane.