Chemical Coordination and Integration Practice Questions
NEET · Biology · 985 free MCQs with instant results and detailed explanations.
985
Total
196
Easy
441
Medium
348
Hard
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Topics in Chemical Coordination and Integration
Hormones and Functions
237
Feedback Mechanism
253
Hormonal Disorders
248
Endocrine Glands
247
Sample Questions from Chemical Coordination and Integration
Here are 10 sample questions. Start a quiz to get randomized questions with scoring.
Q1
Easy
The adrenal medulla secretes which of the following hormones?
A.
Cortisol
B.
Adrenaline
C.
Aldosterone
D.
Insulin
Show Answer & Explanation
Correct Answer: B
The adrenal medulla secretes adrenaline (epinephrine), which is involved in the fight-or-flight response.
Q2
Easy
Which gland is known as the 'master gland' of the endocrine system?
A.
Thyroid gland
B.
Pituitary gland
C.
Pineal gland
D.
Thymus gland
Show Answer & Explanation
Correct Answer: B
The pituitary gland is referred to as the 'master gland' because it regulates other endocrine glands and hormone production.
Q3
Easy
Which hormone is produced by the thyroid gland?
A.
Oxytocin
B.
Thyroxine
C.
Insulin
D.
Growth hormone
Show Answer & Explanation
Correct Answer: B
Thyroxine is the primary hormone produced by the thyroid gland, which regulates metabolism.
Q4
Medium
Which gland is responsible for regulating metabolism and energy production in the body?
A.
Thyroid gland
B.
Adrenal gland
C.
Pituitary gland
D.
Pancreas
Show Answer & Explanation
Correct Answer: A
The thyroid gland produces hormones like thyroxine that regulate metabolic rate, energy production, and overall growth.
Q5
Medium
The hormone responsible for the 'fight or flight' response is primarily produced by which gland?
A.
Thyroid gland
B.
Adrenal medulla
C.
Pancreas
D.
Pituitary gland
Show Answer & Explanation
Correct Answer: B
The adrenal medulla releases adrenaline (epinephrine) during stress, preparing the body for 'fight or flight' responses.
Q6
Medium
Which of the following hormones is produced by the posterior pituitary gland?
A.
Adrenocorticotropic hormone (ACTH)
B.
Luteinizing hormone (LH)
C.
Oxytocin
D.
Thyroid-stimulating hormone (TSH)
Show Answer & Explanation
Correct Answer: C
Oxytocin is produced in the hypothalamus and released by the posterior pituitary, playing a role in childbirth and lactation.
Q7
Medium
Which hormone plays a crucial role in the regulation of the menstrual cycle?
A.
Testosterone
B.
Progesterone
C.
Estrogen
D.
Adrenaline
Show Answer & Explanation
Correct Answer: B
Progesterone is essential for maintaining the uterine lining during the menstrual cycle, particularly after ovulation.
Q8
Hard
Which hormone is primarily responsible for regulating glucose metabolism by promoting its uptake in tissues and lowering blood sugar levels?
A.
Insulin
B.
Glucagon
C.
Cortisol
D.
Adrenaline
Show Answer & Explanation
Correct Answer: A
Insulin is the key hormone that facilitates the uptake of glucose by body cells, thereby reducing blood sugar levels. Glucagon has the opposite effect, raising blood sugar levels, while cortisol and adrenaline have roles in stress response and metabolism but do not primarily regulate glucose uptake.
Q9
Hard
A patient exhibits symptoms of excessive thirst and frequent urination. Which hormone imbalance is most likely responsible for these symptoms?
A.
Antidiuretic hormone (ADH)
B.
Aldosterone
C.
Thyroxine
D.
Insulin
Show Answer & Explanation
Correct Answer: A
The symptoms of excessive thirst and frequent urination are indicative of diabetes insipidus, which is often caused by a deficiency of antidiuretic hormone (ADH). ADH regulates water balance in the body, and its lack leads to increased urine output.
Q10
Hard
In a feedback mechanism, which of the following hormones employs a negative feedback loop to regulate its own secretion?
A.
Thyroid hormones
B.
Adrenaline
C.
Oxytocin
D.
Growth hormone
Show Answer & Explanation
Correct Answer: A
Thyroid hormones, primarily thyroxine (T4) and triiodothyronine (T3), utilize a negative feedback loop to regulate their own secretion. High levels of these hormones inhibit their further production by signaling the pituitary gland to reduce TSH secretion.
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Chemical Coordination and Integration — NEET Biology Practice Questions Online
This page contains 985 practice MCQs for the chapter Chemical Coordination and Integration in NEET Biology. The questions are organized by difficulty — 196 easy, 441 medium, 348 hard — so you can choose the right level for your preparation.
Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit. This chapter covers 4 topics, giving you comprehensive coverage of the entire chapter.