Coordination and control – Online MCQs Test – Biology MCAT

1. If a person takes iodine, then it will be stored in

Thyroid

Liver cells

Pancreas

Brain cells

2. Fixed action patterns are initiated by external stimuli called

Dominance hierarchies

Sign stimuli

Agonistic behavior

Fixed action pattern

3. The chemical causing the transmission of nerve impulse across synapses is

Acetylcholine

Cholinesterase

Acetic acid

Choline

4. The main function of cerebellum is

To see

Remembering

To hear

Balancing

5. All of the following hormones are produced by the anterior pituitary EXCEPT

Human growth hormone

Thyroid-stimulating hormone

Follicle-stimulating hormone

Glucagon

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

CO₂ and H⁺

NH₃ and H⁺

O₂ and CO₂

O₂ and H⁺

7. Which of the following hormones are neurotransmitters?

Adrenalin and acetylcholine

Cholecystokinin and adrenalin

Cholecystokinin and acetylcholine

Acetylcholine and secretin

8. Pheromone is

Used for animal communication

A product of endocrine gland

Messenger RNA

Always protein

9. Which one is actually synthesized in hypothalamus?

Oxytocin

ACTH

Cortisot

STH

10. Important part of the brain which serves as connecting link between nervous and endocrine system is:

Thalamus

Cerebellum

Hypothalamus

Hippocampus

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

No effect on impulse

No impulse is transmitted from receptor

Impulse is transmitted fast

Impulse is transmitted but slowly

12. 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 negative, then positive and again back to negative

First positive, then negative and continue to be negative

First positive, then negative and again back to positive

First negative, then positive and continue to be positive

13. Which one of the following pair is the matching pair of the body part and the hormone it secretes?

Stomach epithelium — Secretin

Anterior pituitary — Adrenalin

Thyroid —Epinephrin

Alpha cells of pancreas – Glucagon

14. The potential difference between outside and inside of a nerve before excitation is known as

Action potential

Resting potential

Spike potential

Reaction potential

15. ADH is secreted by

Anterior pituitary

Posterior pituitary

Thyroid

Adrenal

16. The function of glucagon hormone is

To decrease blood sugar level

To increase glycogenesis

To increase the absorption of glucose and fatty acids through cell

To release glucose from liver cells and glycogenolysis promotion

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

Initiation of roots

Seed dominance

Abscission

Cell division and Cell enlargement

18. The self-governing nervous system is known as

Peripheral nervous system

Sympathetic nervous system

Central nervous system

Autonomic nervous system

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

Adrenaline

Testosterone

Insulin

Thyroxin

20. The activity of two cerebral hemispheres is co-ordinated by:

Corpus Cavernous

Corpus Callosum

Vernix Cascosa

Superior Sagittal Sinus

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