Coordination and control – Online MCQs Test – Biology MCAT

1. Which of the following hormones are neurotransmitters?

Adrenalin and acetylcholine

Cholecystokinin and adrenalin

Cholecystokinin and acetylcholine

Acetylcholine and secretin

2. Pheromone is

Always protein

A product of endocrine gland

Messenger RNA

Used for animal communication

3. Which hormone trigger changes at the time of puberty in boys?

Adrenaline

Insulin

Testosterone

Thyroxin

4. During the transmission of nerve impulse through a nerve fibre, the potential on the inner side of the plasma membrane has which type of electric charge?

First positive, then negative and again back to positive

First positive, then negative and continue to be negative

First negative, then positive and continue to be positive

First negative, then positive and again back to negative

5. Plants response to light due to the presence of a hormone in its growing tip, the hormone was named:

Phytoxin

Cytoxin

Auxin

Neuroxin

6. Which one of the following occurs without the help of brain?

Spinal reflex

Efferent reflex

Cranial reflex

Afferent reflex

7. Resting membrane potential of neurons is:

– 20 mV to – 50 mV

– 40 mV to – 90 mV

– 45 mV to – 65 mV

– 30 mV to – 45 mV

8. To induce labour _______ hormone is given:

Growth

Oxytocin

Antidiuretic

Thyroid

9. The posterior pituitary lobe secretes:

ADH

MSH

FSH

TSH

10. The self-governing nervous system is known as

Sympathetic nervous system

Peripheral nervous system

Central nervous system

Autonomic nervous system

11. Glucagon and insulin are

Secreted by same cells and perform similar function

Secreted by same cells and perform antagonistic functions

Antagonistic secretions

Secreted by different cells and perform antagonistic function

12. The over-production of STH (Somatotrophin) after adult-hood results in:

Gigantism

Dwarfism

Acromegaly

Myxedema

13. Which of the following is not correctly matched?

Cerebellum – Balance

Medulla oblongata – Temperature regulation

Hypothalamus – Pituitary

Pons – Reticular formation

14. Fixed action patterns are initiated by external stimuli called

Fixed action pattern

Dominance hierarchies

Sign stimuli

Agonistic behavior

15. Physiological state of body is controlled by

Cerebellum

Thalamus

Hypothalamus

All of the above

16. Breathing, heartbeat, blood pressure, coughing, swallowing are all under the control of:

Mid Brain

Cerebellum

Pons

Medulla Oblongata

17. Deficient production of cortisol due to the destruction of adrenal gland is:

Addison’s Disease

Crohn’s Syndrome

Cushing Syndrome

Klienfelter Syndrome

18. The urine of a man is very dilute and the quantity of urine is too much and dehydration has started in his body and he is very thirsty by the cause of

Hypersecretion and Hyposecretion

Hyposecretion of ADH

Hypersecretion of ADH

None of the above

19. Over production of Cortisol results in:

Curshing Syndrome

Down Syndrome

Crohn’s Syndrome

Addison’s Disease

20. Pituitary gland is under the control of

Adrenal gland

Pineal gland

Thyroid gland

Hypothalamus

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