Coordination and control – Online MCQs Test – Biology MCAT

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

Spinal reflex

Efferent reflex

Afferent reflex

Cranial reflex

2. Innate (Instinctive. Behaviour includes:

Operant Conditioning

Fixed action pattern

Classic conditioning

Imprinting

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

Thalamus

Medulla Oblongata

Hypothalamus

Cerebrum

4. Which one of the following is not the role of Auxins?

Seed dominance

Initiation of roots

Abscission

Cell division and Cell enlargement

5. “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.

Classical conditioning

Operant conditioning

Imprinting

Habituation

6. The median pituitary lobe secretes.

MSH (Melanocyte Stimulating hormone.

TSH (Thyroid Stimulating hormone.

ACTH (Adrenocorticotrophin hormone.

FSH (Follicular Stimulating hormone.

7. Over production of Cortisol results in:

Crohn’s Syndrome

Curshing Syndrome

Down Syndrome

Addison’s Disease

8. If hypothyroidism occurs in early age, it causes:

Acremegaly

Gigantism

Dwarfism

Cretinism

9. Orientation behaviour in which animal exhibits random movement to 3 particular stimulus is:

Fixed action pattern (FAP)

Kinases

Reflexes

Taxes

10. A person passes much urine and drinks much water but his blood glucose level is normal. This condition may be the result of

An increase in secretion of glucagon

A fall in the glucose concentration in urine

A reduction in vasopressin secretion from posterior pituitary

A reduction in insulin secretion from pancreas

11. Glucagon is ______ hormones.

Modified amino acids

Long chain amino acids

Steroid

Short chain amino acids

12. Cell body of neuron is called:

Roma

Soma

Neuroma

Koma

13. The brain-stem consists of:

Thalamus, Hypothalamus, Amygdala

Medulla Oblongata, Pons, Cerebellum

Cerebrum, Cerebellum, Thalamus

Medulla Oblongata, Mid Brain, Pons

14. If dorsal root of spinal cord is broken down then its effect is

No effect on impulse

Impulse is transmitted but slowly

No impulse is transmitted from receptor

Impulse is transmitted fast

15. Cerebrospinal fluid is present

Between piamater and arachnoidmater

Beneath the piamater

Between arachnoid and duramater

In extra duramater

16. The potential difference in the membrane which is responsible for the conduction of an impulse is brought about by a change in the membrane

Concentration

Structure

Anions

Permeability

17. Modified amino acid hormone includes:

Oxytocin

Glucagon

Insulin

Thyroxine

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

ATP

Epinephrin

Cyclic AMP

A cytoplasmic receptor

19. Propagation of action potential is very fast in nerve fibres which have

Small fibre diameter

Covering of myelin sheath

Large fibre diameter and Covering of myelin sheath

Large fibre diameter

20. 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

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