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Test: Chemical Coordination & Integration - 1


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20 Questions MCQ Test Biology Class 11 | Test: Chemical Coordination & Integration - 1

Test: Chemical Coordination & Integration - 1 for NEET 2023 is part of Biology Class 11 preparation. The Test: Chemical Coordination & Integration - 1 questions and answers have been prepared according to the NEET exam syllabus.The Test: Chemical Coordination & Integration - 1 MCQs are made for NEET 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Chemical Coordination & Integration - 1 below.
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Test: Chemical Coordination & Integration - 1 - Question 1

Which of the following is not a mixed/composite gland? 

Detailed Solution for Test: Chemical Coordination & Integration - 1 - Question 1

A gland that contain both exocrine and endocrine portion is called mixed or composite gland. These glands secretes both hormone and enzymes.

Pineal gland is not an example of composite gland.

Test: Chemical Coordination & Integration - 1 - Question 2

Insulin is _____ hormone

Detailed Solution for Test: Chemical Coordination & Integration - 1 - Question 2

Insulin is anabolic hormone because this hormone helps in conversion of glucose into glycogen.

Test: Chemical Coordination & Integration - 1 - Question 3

The following slide is of T.S. thyroid gland and it shows [from left to right] :

Detailed Solution for Test: Chemical Coordination & Integration - 1 - Question 3

Transverse section of thyroid gland shows mark (1) as follicular epithelium, mark (2) as colloid containingthyroglobuin and mark (3) as clear cells.

Test: Chemical Coordination & Integration - 1 - Question 4

By chemical nature, hormones are never :

Detailed Solution for Test: Chemical Coordination & Integration - 1 - Question 4

Hormones are generally proteincomponents having amino acids as well as steroids. Hormones are generally not monosaccharide derivatives in nature

Test: Chemical Coordination & Integration - 1 - Question 5

Which of the following hormones will stimulate gluconeogenesis?

Detailed Solution for Test: Chemical Coordination & Integration - 1 - Question 5

Glucocorticoids stimulate gluconeogenesis. Similarly, glucagon also stimulates the process of gluconeogenesis which also contributes to hyperglycemia.

Test: Chemical Coordination & Integration - 1 - Question 6

Following conversion in forward and backward direction is regulated as :

Blood calcium             Bone calcium

Detailed Solution for Test: Chemical Coordination & Integration - 1 - Question 6

Thyrocalcitonin (TCT) influence the metabolism of calcium inside the body. Parathyroid hormone (PTH) absorption of calcium in bone.

Test: Chemical Coordination & Integration - 1 - Question 7

Glucocorticoids regulate metabolism of :

Detailed Solution for Test: Chemical Coordination & Integration - 1 - Question 7

Glucocorticoids regulate metabolism of carbohydrates, lipids andprotein. This hormone is released from adrenal gland.

Test: Chemical Coordination & Integration - 1 - Question 8

Shekhar is 3 years old and he lives in hilly areas. He has swollen neck :

i. He is suffering from goitre caused due to iodine deficiency which may lead to cretinism.
ii. Goitre may lead him to myxoedema and Grave’s disease in future.

Detailed Solution for Test: Chemical Coordination & Integration - 1 - Question 8

The persons living in hilly areas generally suffer from goiter disease. Goiter is caused due to iodine deficiency which may leads to cretinism. Goiternever leads to myxedemaor hypothyroidism.

Test: Chemical Coordination & Integration - 1 - Question 9

To exert their effect on the target cell, water soluble hormones will need to bind with

Detailed Solution for Test: Chemical Coordination & Integration - 1 - Question 9

Water- soluble hormones include glycoproteins, catecholamines and peptide hormones composed of polypeptides e.g. thyroid- stimulating hormone, follicle- stimulating hormone, luteinizing hormone and insulin.
These molecules are not lipid- soluble and therefore they are not able to diffuse through cell membranes so they bind with the cell membrane bound receptors.

Test: Chemical Coordination & Integration - 1 - Question 10

The hormone secreted by pars intermedia of hypophysis is :

Detailed Solution for Test: Chemical Coordination & Integration - 1 - Question 10

The hormone secreted by pars intemedia of hypophysis is melanocyte-stimulating hormones (MSH).MSH is a peptide hormone also knownas melanotropins.

Test: Chemical Coordination & Integration - 1 - Question 11

A chemical acts slowly, requiring hours to take effect. It may pass in and out of many cells in which they have no effect. When they find appropriate receptor in their target cell they bind to it. Chemical is :

Detailed Solution for Test: Chemical Coordination & Integration - 1 - Question 11

Correct Answer :- d

Explanation : Aldosterone is a chemical acts slowly, requiring hours to take effect. It may pass in and out of many cells in which they have no effect.

Its main role is to regulate salt and water in the body, thus having an effect on blood pressure.

Test: Chemical Coordination & Integration - 1 - Question 12

Secretion of aldosterone is stimulated by :

i. decrease in sodium ion concentration in the plasma.
ii. decrease in potassium ion concentration in the plasma.
iii. decrease in the volume of blood.

Detailed Solution for Test: Chemical Coordination & Integration - 1 - Question 12

Secretion of aldosterone is stimulated by decrease in sodium ion concentration in theplasma. Aldosterone secretion also decrease the volume of blood due to more absorption of water during filtration in kidney.

Test: Chemical Coordination & Integration - 1 - Question 13

Adrenal medulla consists of a cluster of _____ nerves and those cells are also known as _____ cells :

Detailed Solution for Test: Chemical Coordination & Integration - 1 - Question 13

Adrenal medulla consists of a cluster of sympathetic nerves and those cells are also known as chromaffin cells. Adrenal medulla is part of the adrenal gland located at the center of the adrenal gland.

Test: Chemical Coordination & Integration - 1 - Question 14

Match the following :

Hormone
a) Adrenaline 
b) Oxytocin
c) Ecdyson 
d) Prolactin
synonym

i) birth hormone
ii) moulting hormone
iii)luteotropic hormone
iv) fight or flight hormone

Detailed Solution for Test: Chemical Coordination & Integration - 1 - Question 14

Adrenaline hormone is called fight and flight hormone. Oxytocin is called birth hormone. Ecdyson is called moulting hormone and prolactin is called as luteotropic hormone.

Test: Chemical Coordination & Integration - 1 - Question 15

Read the following statements about suprarenal glands :

i. A suprarenal gland represents two endocrine glands arranged in one organ.
ii. It’s outer region secretes steroid hormones.
iii. Also known as gland of emergency.

Detailed Solution for Test: Chemical Coordination & Integration - 1 - Question 15

Suprarenal glands represents two endocrine glands arranged in one organ. It outer region secretes steroid hormones. It is also known as gland of emergency.

Test: Chemical Coordination & Integration - 1 - Question 16

Process of parturition is facilitated by :

Detailed Solution for Test: Chemical Coordination & Integration - 1 - Question 16

The process of parturition begins after completion of gestation period. The muscles present in uterus start contracting due to release of hormone relaxin and Oxytocin.

Test: Chemical Coordination & Integration - 1 - Question 17

A dwarf person showing stunted growth and mental retardation both, is a result of hyposecretion of

Detailed Solution for Test: Chemical Coordination & Integration - 1 - Question 17

Hypothyroidism causes defective development and maturation of the growing baby leading to stunted growth (cretinism), mental retardation, low intelligence quotient, abnormal skin, deaf-mutism, etc.

Test: Chemical Coordination & Integration - 1 - Question 18

The largest endocrine gland is

Detailed Solution for Test: Chemical Coordination & Integration - 1 - Question 18

Thyroid is the largest endocrine gland present in human body. This gland release thyroxin hormone that help in metabolism of carbohydrates, fats and proteins.

Test: Chemical Coordination & Integration - 1 - Question 19

Match the names of organ having isolated endocrine cells with hormone secreted by those cells :

Detailed Solution for Test: Chemical Coordination & Integration - 1 - Question 19

The atrial wall of our heart secretes a very important peptide hormone called ANF. The juxtaglomerular cells of kidney produce a peptide hormone called erythropoietin. The gastro-intestinal tract secrete peptide hormone called CCK

Test: Chemical Coordination & Integration - 1 - Question 20

A person accidentally got his adrenal gland injured. He died & reports will probably reveal that death was caused due to :

Detailed Solution for Test: Chemical Coordination & Integration - 1 - Question 20

Adrenal cortex is situated along the perimeter of the adrenal gland. The adrenal cortex mediates the stress response through production of aldosterone and cortisol. If a person got injured his adrenal gland may die due to loss of stress responsewhich will be reveled in report.

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