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NEET • BIOLOGY • CHEMICAL COORDINATION AND INTEGRATION

Chemical coordination and integration practice · Mixed difficulty

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Showing 181-210 of 381 questions

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181 Easy

181 of 381

Remembering +4 | -1

‘ANF’ is

View answer and explanation

Correct option: B

Peptide hormone

Option B (Peptide hormone) is correct because ANF (Atrial Natriuretic Factor) is a hormone composed of amino acids, classifying it as a peptide hormone.

182 Medium

182 of 381

Understanding +4 | -1

Drinking of which would lead to the highest rate of ADH secretion?

View answer and explanation

Correct option: B

Sea water

Option B (Sea water) is correct because drinking sea water would lead to the highest rate of ADH secretion due to its high salt concentration, which increases blood osmolarity and triggers ADH release to conserve water.

183 Medium

183 of 381

Analyzing +4 | -1

Diseases caused due to insufficiency of hormones include all except

View answer and explanation

Correct option: A

Cushing's disease

Option A (Cushing's disease) is correct because Cushing's disease is caused by an excess of cortisol, not a deficiency.

184 Hard

184 of 381

Remembering +4 | -1

How many matching are correct with reference to adrenal gland

(a) Zona reticularis – Gonadocorticoids

(b) Zona Fasciculata – Glucocorticoids

(c) Zona glomerulosa – Mineralocorticoids

(d) Zona reticularis – Mineralocorticoids

View answer and explanation

Correct option: A

Three

Option D (One) is correct because only one matching is correct: Zona Fasciculata – Glucocorticoids.

185 Medium

185 of 381

Understanding +4 | -1

Small amount of …A… steroids are also secreted by …B… . Cortex which play a role in the growth of axial hair, pubic hair and facial hair during puberty.
Choose the correct combination for A and B

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Correct option: B

A-androgenic; B-adrenal

Option B (A-androgenic; B-adrenal) is correct because the adrenal cortex secretes small amounts of androgenic steroids that contribute to the development of secondary sexual characteristics.

186 Medium

186 of 381

Understanding +4 | -1

Which statement is correct about the thyroid gland?

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Correct option: A

Thyroid hormones are essential for the early development and maturation of the central nervous system

Option A (Thyroid hormones are essential for the early development and maturation of the central nervous system) is correct because thyroid hormones play a crucial role in brain development.

187 Easy

187 of 381

Understanding +4 | -1

The posterior pituitary gland is not a ‘true’ endocrine gland because

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Correct option: C

it only stores and releases hormones

Option C is correct because the posterior pituitary only stores and releases hormones that are produced by the hypothalamus, not synthesizing them itself.

188 Easy

188 of 381

Understanding +4 | -1

Inhibition of secretion of which of the following hormones is necessary for disintegration of corpus luteum?

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Correct option: B

Progesterone

Option A (LH) is correct because the corpus luteum requires LH stimulation to maintain progesterone secretion; inhibiting LH leads to corpus luteum disintegration.

189 Medium

189 of 381

Remembering +4 | -1

Low

C{a^2}^ +

in the body fluid may be the cause of

View answer and explanation

Correct option: A

Tetany

Option A (Tetany) is correct because low calcium levels in the body fluids can lead to increased neuromuscular excitability, resulting in tetany (muscle spasms).

190 Medium

190 of 381

Remembering +4 | -1

Hormones

View answer and explanation

Correct option: D

All of these

Option D (All of these) is correct because hormones are non-nutrient chemicals, act as messengers, and are present in trace amounts.

191 Easy

191 of 381

Remembering +4 | -1

Which one of the following is not an endocrine gland?

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Correct option: A

Kidney

Option A (Kidney) is correct because while the kidney produces hormones, it is primarily an excretory organ, not solely an endocrine gland.

192 Hard

192 of 381

Remembering +4 | -1

The development of adult characteristics in a moulting insect is promoted by:

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Correct option: B

Ecdysone

Option B (Ecdysone) is correct because ecdysone promotes the development of adult characteristics in moulting insects.

193 Medium

193 of 381

Remembering +4 | -1

The adrenal medulla secretes two hormones called adrenaline or …A… and noradrenaline or …B… . These are commonly called as …C… . Adrenaline and noradrenaline are rapidly secreted in response to stress of any kind and during …D… situations and are called emergency hormones or hormones of fight or flight.
Identify A to D and choose the correct option

View answer and explanation

Correct option: B

A-epinephrine, B-norepinephrine, C-catecholamines, D-emergency

Option B is correct because adrenaline is also known as epinephrine, noradrenaline as norepinephrine, these are catecholamines, and are released during emergency situations.

194 Hard

194 of 381

Remembering +4 | -1

Growth hormone and thyroxine increase the length of:

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Correct option: A

Bone

Option A is correct because growth hormone and thyroxine both promote bone growth, increasing the length of bones.

195 Medium

195 of 381

Remembering +4 | -1

Hypothalamus is the

View answer and explanation

Correct option: D

Basal part of diencephalon

The correct answer is Basal part of diencephalon because the hypothalamus forms the floor and lower walls of the third ventricle, which is the basal part of the diencephalon.

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196 Medium

196 of 381

Understanding +4 | -1

Which of the following does not occur when LH and FSH are present in females?

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Correct option: C

The corpus luteum is maintained

Option B (Androgens are secreted) is correct because while LH and FSH stimulate follicle development and ovulation, they do not directly cause the secretion of androgens in females; that's primarily a function of the male testes.

197 Medium

197 of 381

Remembering +4 | -1

Posterior pituitary stores and release 2 hormones

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Correct option: C

1 and 2

Option C is correct because the posterior pituitary stores and releases both vasopressin (ADH) and oxytocin, which are synthesized in the hypothalamus.

198 Medium

198 of 381

Remembering +4 | -1

Which of the following is called emergency gland of the body?

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Correct option: B

Adrenal

Option B (Adrenal) is correct because the adrenal gland secretes hormones like adrenaline and noradrenaline, which are crucial during emergencies.

199 Medium

199 of 381

Analyzing +4 | -1

Choose the odd one w.r.t. recombinant therapeutics.

View answer and explanation

Correct option: C

Estrogen

Option C (Estrogen) is correct because Erythropoietin, FSH, and Somatotropin are produced using recombinant DNA technology, while estrogen is a naturally occurring hormone and not a recombinant therapeutic.

200 Easy

200 of 381

Understanding +4 | -1

Which of the following would help in prevention of diuresis?

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Correct option: A

Reabsorption of

N{a^ + }

and water from renal tubules due to aldosterone

Option A (Reabsorption of

N{a^ + }

and water from renal tubules due to aldosterone) is correct because aldosterone promotes sodium and water reabsorption, preventing diuresis.

201 Easy

201 of 381

Understanding +4 | -1

Hormones which interact with intracellular receptors are:  I. Steroid hormones,  II. ACTH,  IIII. Iodothyronines,  IV. MSH.  Choose the option with correct combination

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Correct option: A

I and III

The correct answer is A (I and III) because steroid hormones and iodothyronines interact with intracellular receptors.

202 Easy

202 of 381

Understanding +4 | -1

Which is a secretion of exocrine gland:

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Correct option: D

Both 1 and 3

Option D (Both 1 and 3) is correct because saliva and digestive enzymes are both secreted by exocrine glands through ducts.

203 Medium

203 of 381

Understanding +4 | -1

I. Increased alertness

II. Pupillary dilation

III. Raising of hairs

IV. Sweating

All of the above written physiological processes are regulated by

View answer and explanation

Correct option: C

Both (1) and (2)

Option C (Both (1) and (2)) is correct because both adrenaline and norepinephrine regulate the listed physiological processes as part of the "fight or flight" response.

204 Medium

204 of 381

Understanding +4 | -1

Gastrin acts on …A… gland and …B… the secretion of HCl and …C… . Choose the correct combination. Here A, B and C refers to

View answer and explanation

Correct option: C

A-gastric, B-stimulates, C-pepsinogen

Option C (A-gastric, B-stimulates, C-pepsinogen) is correct because gastrin acts on the gastric gland and stimulates the secretion of HCl and pepsinogen.

205 Medium

205 of 381

Understanding +4 | -1

Identify the correct statement from the following.

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Correct option: C

Androgens help in the production of RBCs

Option C (Androgens help in the production of RBCs) is correct because androgens stimulate erythropoiesis, leading to increased red blood cell production.

206 Hard

206 of 381

Remembering +4 | -1

Moulting hormone is secreted by

View answer and explanation

Correct option: B

Prothoracic gland

Option B (Prothoracic gland) is correct because the moulting hormone (ecdysone) is secreted by the prothoracic gland in insects.

207 Easy

207 of 381

Remembering +4 | -1

Acromegaly is caused by

View answer and explanation

Correct option: A

Excess of STH

Option A (Excess of STH) is correct because acromegaly is caused by excessive secretion of Somatotropin (STH), also known as growth hormone, after the growth plates have closed.

208 Medium

208 of 381

Remembering +4 | -1

GnRH, a hypothalamic hormone, needed in reproduction, acts on

View answer and explanation

Correct option: C

Anterior pituitary gland and stimulates secretion of LH and FSH

The correct answer is Anterior pituitary gland and stimulates secretion of LH and FSH because GnRH acts on the anterior pituitary to stimulate the release of luteinizing hormone (LH) and follicle-stimulating hormone (FSH).

209 Medium

209 of 381

Analyzing +4 | -1

If the pituitary gland of an adult rat is surgically removed, which of the following endocrine glands will be less affected?

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Correct option: B

Adrenal medulla

Option B (Adrenal medulla) is correct because the adrenal medulla is primarily controlled by the sympathetic nervous system, not directly by pituitary hormones. The adrenal cortex, thyroid, and gonads are all regulated by pituitary hormones.

210 Easy

210 of 381

Understanding +4 | -1

I. Sleep-wake cycle, II. Body temperature,  III. Pigmentation,  IV. Metabolism,  V. Defence capability.  All of the above written activities are influenced/regulated by

View answer and explanation

Correct option: A

Pineal gland

Option A (Pineal gland) is correct because the pineal gland secretes melatonin, which influences the sleep-wake cycle, body temperature, pigmentation, metabolism, and defense capability.

Revision notes and key takeaways

Review CHEMICAL COORDINATION AND INTEGRATION in your textbook or class notes, then use this set to check your understanding.

Showing 181-210 of 381 questions

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Chemical coordination and integration practice · Mixed difficulty

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