Back to CHEMICAL COORDINATION AND INTEGRATION

Your Progress

0 / 381 Answered

Correct

Incorrect

Accuracy

NEET • BIOLOGY • CHEMICAL COORDINATION AND INTEGRATION

Chemical coordination and integration practice · Mixed difficulty

Choose an answer to check it, or open “View answer” to study the explanation. Sign in to save progress to your account.

Practice format and chapter quiz

The practice player uses single-correct-answer MCQs. Chapter quizzes help you review a topic; they are not full-length NEET mock papers.

Take a chapter quiz →

Showing 271-300 of 381 questions

Preparing practice and saved progress…

271 Medium

271 of 381

Remembering +4 | -1

Which one is not a placental hormone?

View answer and explanation

Correct option: D

Melatonin

Option D (Melatonin) is correct because melatonin is secreted by the pineal gland, not the placenta.

272 Easy

272 of 381

Remembering +4 | -1

Which of the following are heterocine glands;  I. Thyroid,  II. Parathyroid,  III. Ovary,  IV. Testis,  V. Pituitary,  VI. Pancreas.  Choose the correct option

View answer and explanation

Correct option: B

III, IV and VI

Option B (III, IV and VI) is correct because ovaries, testes, and the pancreas have both endocrine and exocrine functions.

273 Easy

273 of 381

Understanding +4 | -1

Hormones which interact with the membrane-bound receptors normally do not enter the target
cell but generate second messengers. These second messengers are referred as

View answer and explanation

Correct option: D

All the above

Option D (All the above) is correct because cAMP, calcium ions, and inositol 3-phosphate are all well-known second messengers in hormone signaling.

274 Medium

274 of 381

Remembering +4 | -1

Which one of the following is anti abortion hormone?

View answer and explanation

Correct option: B

Progesterone

Option B (Progesterone) is correct because Progesterone is essential for maintaining pregnancy and preventing uterine contractions, thus acting as an anti-abortion hormone.

275 Medium

275 of 381

Understanding +4 | -1

A deficiency of calcium in the diet would lead to

View answer and explanation

Correct option: B

An increase in parathyroid hormone in blood

Option B (An increase in parathyroid hormone in blood) is correct because low calcium levels stimulate the parathyroid glands to release PTH, increasing blood calcium.

276 Easy

276 of 381

Remembering +4 | -1

CCK acts on

View answer and explanation

Correct option: C

Both (a) and (b)

Option C (Both (a) and (b)) is correct because CCK stimulates both the pancreas to release digestive enzymes and the gallbladder to contract and release bile.

277 Medium

277 of 381

Analyzing +4 | -1

Assertion: Cortisol produces anti-inflammatory
reactions and suppresses the immune response.

Reason: It stimulates gluconeognesis,
lipogenesis, and proteogenesis.

View answer and explanation

Correct option: C

If Assertion is true but Reason is false

Option C (Assertion is true but Reason is false) is correct because cortisol does have anti-inflammatory effects but stimulates gluconeogenesis, not lipogenesis and proteogenesis.

278 Medium

278 of 381

Understanding +4 | -1

Which one of the following statements is correct?

View answer and explanation

Correct option: A

Neurons regulate endocrine activity, but not vice versa.

Option B (Endocrine glands regulate neural activity and nervous system regulates endocrine glands) is correct because there is a reciprocal relationship between the nervous and endocrine systems, where each can influence the other.

279 Easy

279 of 381

Remembering +4 | -1

Which of the following are identical?

View answer and explanation

Correct option: D

Vasopressin and ADH

Option D (Vasopressin and ADH) is correct because Vasopressin is another name for ADH (Antidiuretic Hormone).

280 Medium

280 of 381

Remembering +4 | -1

Cell division, protein synthesis, growth of muscle, growth of bones are regulated by

View answer and explanation

Correct option: A

Growth hormone

Option A (Growth hormone) is correct because growth hormone regulates cell division, protein synthesis, muscle growth, and bone growth.

281 Medium

281 of 381

Application +4 | -1

In a man being pursued by a dog, which of these hormones would be released quickly?

View answer and explanation

Correct option: C

Epinephrine

Option C (Epinephrine) is correct because epinephrine is released quickly in response to stress, such as being pursued.

282 Medium

282 of 381

Understanding +4 | -1

The presence of signal peptide is characteristic of which protein when they are synthesised:

View answer and explanation

Correct option: D

Insulin

Option D (Insulin) is correct because insulin is a secreted protein and requires a signal peptide for translocation into the endoplasmic reticulum during synthesis.

283 Easy

283 of 381

Understanding +4 | -1

Which of the following statements regarding glucagon is false?

View answer and explanation

Correct option: C

It decreases blood sugar level

Option C (It decreases blood sugar level) is correct because glucagon increases, not decreases, blood sugar level.

284 Easy

284 of 381

Understanding +4 | -1

Parathormone is responsible for:-

View answer and explanation

Correct option: D

Regulation of

C{a^{ + 2}}

level in blood

Option D (Regulation of

C{a^{ + 2}}

level in blood) is correct because parathormone's primary function is to increase blood calcium levels.

285 Medium

285 of 381

Understanding +4 | -1

Resorption of water and electrolytes by distal tubules of kidney and thereby diuresis reducing the loss of water through urine (diuresis) is done by

View answer and explanation

Correct option: B

Vasopressin

Option B (Vasopressin) is correct because Vasopressin (ADH) increases water reabsorption in the distal tubules and collecting ducts of the kidney, reducing water loss through urine (diuresis).

Explore Other Chapters in BIOLOGY

View All →

ANIMAL KINGDOM 756 MCQs PLANT KINGDOM 415 MCQs ANATOMY OF FLOWERING PLANTS 404 MCQs MOLECULAR BASIS OF INHERITANCE 404 MCQs PRINCIPLE OF INHERITANCE AND VARIATION 374 MCQs EVOLUTION 362 MCQs

286 Easy

286 of 381

Remembering +4 | -1

Hyposecretion of growth hormone causes

View answer and explanation

Correct option: A

Dwarfism

Option A is correct because hyposecretion (undersecretion) of growth hormone during childhood causes dwarfism, characterized by stunted growth.

287 Easy

287 of 381

Understanding +4 | -1

Select the odd one w.r.t. functions of PTH.

View answer and explanation

Correct option: B

Stimulates mineralisation of bones

The correct answer is B (Stimulates mineralisation of bones) because PTH actually stimulates bone resorption (breakdown), which releases calcium into the blood, not mineralisation.

288 Hard

288 of 381

Understanding +4 | -1

[A]: Behavioural activities that are correlated with a one week cycle under fairly constant conditions are called circadian rhythms.

[R]: Experiments have proved that biological clock is entirely internal.

View answer and explanation

Correct option: D

Both A and R are false

Option D (Both A and R are false) is correct because behavioral activities correlated with a one-week cycle are called circaseptan rhythms, not circadian rhythms, and the biological clock is not entirely internal as it is influenced by external cues like light.

289 Easy

289 of 381

Remembering +4 | -1

Hyposecretion of which of the following can cause diabetes insipidus?

View answer and explanation

Correct option: D

ADH

Option D is correct because diabetes insipidus is caused by the hyposecretion of ADH (antidiuretic hormone), which leads to the inability of the kidneys to reabsorb water.

290 Medium

290 of 381

Understanding +4 | -1

What represent a link between the nervous and endocrine
systems?

View answer and explanation

Correct option: D

Hypothalamus

The correct answer is D (Hypothalamus) because it integrates nervous and endocrine functions.

291 Medium

291 of 381

Understanding +4 | -1

A health disorder that results from the deficiency of thyroxine in adults and characterized by; I.A low metabolic rate,  II.Increase in body weight,  III.Tendency to retain water in tissue, is

View answer and explanation

Correct option: C

Myxoedema

The correct answer is C (Myxoedema) because Myxoedema is a condition resulting from severe hypothyroidism in adults, characterized by a low metabolic rate, weight gain, and water retention.

292 Medium

292 of 381

Understanding +4 | -1

Identify the correct matching of a hormone with its source and function.

View answer and explanation

Correct option: C

Cortisol – adrenal cortex; carbohydrate metabolism

Option C (Cortisol – adrenal cortex; carbohydrate metabolism) is correct because cortisol is secreted by the adrenal cortex and plays a significant role in carbohydrate metabolism.

293 Medium

293 of 381

Understanding +4 | -1

Which of the following statements are related to the hormone vasopressin?

A. It is also called ADH.

B. Synthesized and secreted by the neuro hypophysis.

C. Stimulates reabsorption of water and electrolytes by distal tubules.

D. Deficiency of ADH can cause increased urination.

Select the correct option.

View answer and explanation

Correct option: C

A, C and D

The correct answer is C (A, C and D) because vasopressin is ADH, stimulates water reabsorption, and its deficiency causes increased urination.

294 Medium

294 of 381

Understanding +4 | -1

Presence of which of the following conditions in urine are indicative of Diabetes Mellitus ?

View answer and explanation

Correct option: C

Ketonuria and Glycosuria

Option C (Ketonuria and Glycosuria) is correct because Diabetes Mellitus is characterized by high blood sugar, leading to glucose in the urine (glycosuria) and the presence of ketone bodies (ketonuria) due to fat metabolism.

295 Easy

295 of 381

Understanding +4 | -1

Assertion: Catecholamine increases the concentration of glucose in blood.

Reason: Catecholamine stimulates glycogenolysis.

View answer and explanation

Correct option: A

If both the assertion and the reason are true and the reason is a correct explanation of the assertion

Option A (If both the assertion and the reason are true and the reason is a correct explanation of the assertion) is correct because catecholamines increase blood glucose by stimulating glycogenolysis.

296 Medium

296 of 381

Analyzing +4 | -1

Assertion (A): Glucagon is a hyperglycemic hormone.

Reason (R): Glucagon stimulates glycogenolysis and inhibits gluconeogenesis.

View answer and explanation

Correct option: C

A is true but R is false

Option C (A is true but R is false) is correct because glucagon is a hyperglycemic hormone, but it stimulates glycogenolysis and stimulates gluconeogenesis, not inhibits it.

297 Medium

297 of 381

Analyzing +4 | -1

Level of follicle stimulating hormone (FSH) during infancy and adulthood is the same but spermatogenesis is seen only during adulthood. mRNA levels coding for FSH receptors are also found to be same in testis of both age groups. Which of the following investigations will clarify this paradox a little more?

View answer and explanation

Correct option: A

Culture testicular cells and add LH to see testosterone production

Option A is correct because it directly tests the Leydig cells' ability to produce testosterone in response to LH, which is crucial for spermatogenesis.

298 Medium

298 of 381

Understanding +4 | -1

In females the …A... induces the ovulation of fully mature follicle called …B... and maintain the …C… formed from remnants of the Graafian follicle after ovulation. Select the correct combination in reference to the above given statement

View answer and explanation

Correct option: D

A-LH, B-Graafian follicles, C-corpus luteum

Option D (A-LH, B-Graafian follicles, C-corpus luteum) is correct because LH induces ovulation of the Graafian follicle, and the corpus luteum is maintained after ovulation.

299 Easy

299 of 381

Remembering +4 | -1

Among various ions encountered in living cells, the ions most commonly used in cellular signalling as second messenger are

View answer and explanation

Correct option: D

{Ca}^{2+}

Option D (

{Ca}^{2+}

) is correct because calcium ions are widely used as secondary messengers in various cellular signaling pathways.

300 Medium

300 of 381

Remembering +4 | -1

Which of the following acts as a temporary endocrine tissue?

View answer and explanation

Correct option: B

Corpus luteum

Option B (Corpus luteum) is correct because the corpus luteum, formed after ovulation, secretes hormones like progesterone and estrogen temporarily.

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 271-300 of 381 questions

Your Progress

Chemical coordination and integration practice · Mixed difficulty

Explore Other Chapters in BIOLOGY

Continue Your Practice

Your practice