Coordination and control – Online MCQs Test – Biology MCAT

1. Glucagon and insulin are

Antagonistic secretions

Secreted by same cells and perform similar function

Secreted by different cells and perform antagonistic function

Secreted by same cells and perform antagonistic functions

2. “Mary had a little lambs; its fleece was white as snow. And everywhere that Mary went, the lamb was sure to go.” The behavior of the lamb is best described as.

Imprinting

Habituation

Classical conditioning

Operant conditioning

3. Which statement is true for nerve conduction?

Rise in stimulus induces permeability to Na+ is long lived.

During transmission of impulse, Na+ outfiux continuously.

Concentration gradient generated when active transportation of ions occurs by Na- K pump.

During resting stage axonal membrane is less permeable for K+ and more permeable for Na+.

4. Gibberellins inject rice seedlings and produce a disease called:

Foolish Seedling

Lateral Seedling

Silent Seedling

Apical Seedling

5. The largest and most complex part of human brain is:

Medulla Oblongata

Hypothalamus

Thalamus

Cerebrum

6. In mammals the corpus callosum connects

The two cerebral hemispheres

Bone to a muscle

The two optic lobes

Bone to a bone

7. Pheromone is

A product of endocrine gland

Messenger RNA

Used for animal communication

Always protein

8. Which of the following is an inhibitory neurotransmitter?

Epinephrine

GABA

Acetytcholine

Adrenaline

9. Which would occur if the parasympathetic system were stimulated?

Increase in adrenaline

Increase in blood sugar

Increase in digestion

Increase in breathing rate

10. In an accident, a person’s brain was injured due to which he could not regulate body temperature, hunger and water balance. Which one of the following parts of his brain was affected?

Hypothalamus

Cerebellum

Medulla oblongata

Pons

11. Solving a problem without trial and error learning is called:

imprinting

Latent Learning

Operant Learning

Insight Learning

12. Ovarian hormones are

Proteins and steroids

None of these

Proteins

Steroids only

13. The median pituitary lobe secretes.

TSH (Thyroid Stimulating hormone.

MSH (Melanocyte Stimulating hormone.

FSH (Follicular Stimulating hormone.

ACTH (Adrenocorticotrophin hormone.

14. Tendency of recurrent seizures or temporary alteration in one or more functions is:

Psychosis

Epilepsy

Alzheimer’s disease

Diphtheria

15. Resting membrane potential of neurons is:

– 45 mV to – 65 mV

– 30 mV to – 45 mV

– 20 mV to – 50 mV

– 40 mV to – 90 mV

16. Pancreas secretes

Glucagon

Digestive enzymes

Insulin

All of these

17. Aortic body and carotid body, both are chemoreceptor’s which are sensitive to in the blood

NH₃ and H⁺

O₂ and CO₂

CO₂ and H⁺

O₂ and H⁺

18. Action of the peptide hormone on a target cell is mediated by

ATP

Epinephrin

A cytoplasmic receptor

Cyclic AMP

19. Hormone sometimes given by injection as an emergency treatment in cardiac arrest, anaphylactic shock and acute asthma attack is:

Thyroid

Epinephrine

Cortisol

Insulin

20. Calcitonin lowers the calcium level in the blood. This is secreted by

Parathyroid

Hypothalamus

Thyroid

Adrenal

Coordination and control / nervous and chemical Coordination-Medical College Admission Test Preparation Notes