Test Preparation on Chemical coordination and integration - Biology Test Series for NEET - 2020

The chemical nature of hormones secreted by α & β cells of pancreas is

1Glycolipid
2Glycoprotein
3Steroid
4Polypeptide

Which of the following hormones are produced in the hypothalamus and stored in the posterior pituitary

1FSH and LH
2ADH and oxytocin
3TSH and STH
4ACTH and MSH

Which of the following is not necessarily a property of all hormones

1Information carrying
2Secreted in low amounts
3Short half–life
4Protein in nature

(d) Hormone do not belong to a single chemical group but
are varied in their composition is polypeptide, proteins,
amines or steroid.

Which of the following statements is correct in relation to the endocrine system

1Releasing and inhibitory hormones are produced by the pituitary gland
2Adenohypophysis is under direct neural regulation of the hypothalamus
3Organs in the body like gastrointestinal tract, heart, kidney and liver do not produce any hormones
4Non–nutrient chemicals produced by the body in trace amount that act as intercellular messenger are known as hormones

According to the accepted concept of hormone action, if receptor molecules are removed from target organs

1The target organ will continue to respond to the hormone without any difference
2The target organ will continue to respond to the hormone but will require higher concentration
3The target organ will not respond to the hormone
4The target organ will continue to respond to the hormone but in the opposite way

What is correct to say about the hormone action in humans
(a) Glucagon is secreted by β –cells of lslets of Langerhans
and stimulates glycogenolysis
(b) Secretion of thymosins is stimulated with aging
(c) In females, FSH first binds with specific receptors on
ovarian cell membrane
(d) FSH stimulates the secretion of estrogen and progesterone

1(a)
2(b)
3(c)
4(d)

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 and (iii) tendency to retain water in tissues is
Or
Man with thick lips, dirt deposited on tongue, low heart
beating rate, with excess amount of cholesterol in blood, is
supposed to be suffering from which abnormality

1Hypothyroidism
2Simple goitre
3Myxoedema
4Cretinism

(c) Myxoedema occurs due to deficiency of thyroxine is
adults. It is characterized by low BMR, low body temperature, reduced heart rate, pulse rate, cardiac output. Face and hands become swollen.

Which one of the following hormones is not involved in sugar metabolism

1Aldosterone
2Insulin
3Glucagon
4Cortisone

(a) Aldosterone is secreted by adrenal cortex and is
responsible for regulation of Na⁺ and K⁺ levels in body.

Which one of the following four glands is correctly matched with the accompanying description

1Thyroid – Hyperactivity in young children causes cretinism
2Thymus – Starts undergoing atrophy after puberty
3Parathyroid – Secretes parathormone, which promotes move–ment of calcium ions from blood into bones during classification
4Pancreas – Delta cells of the islets of Langerhans secrete a hormone, which stimulates glycolysis in liver


Right Ans	Wrong Ans	Not Attempted