Chemical Coordination Test

Chemical Coordination

This is Chemical Coordination Test-03 for CBSE class 11 Biology.. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
The following slide is of T.S. thyroid gland and it shows [from left to right] :
Question 1 figure 1
  • A
    C-cells, colloid containing T3&T4, parafollicular cells
  • B
    epithelium, colloid containing T4&TCT, parafollicular cells
  • C
    follicular epithelium, colloid containing thyroglobulin, clear cells
    Correct
  • D
    parafollicular cells, colloid containing thyroxine&TCT, follicular epithelium
2
Following conversion in forward and backward directionsis regulated as : Blood calciumBone calcium
Question 2 figure 1
  • A
    (i) is PTH and (ii) is TCT
  • B
    (i) is Ca++ and (ii) is phosphorus
  • C
    (i) is epinephrine and (ii) is norepinephrine
  • D
    (i) is TCT and (ii) is PTH
    Correct
3
To exert their effect on the target cell, water soluble hormones will need to bind with
  • A
    cytosolic receptors.
  • B
    nuclear receptors.
  • C
    plasma proteins.
  • D
    cell membrane bound receptors.
    Correct
4
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.
  • A
    only ii) and iii) are correct.
  • B
    onlyi) and ii) are correct.
  • C
    all are correct.
  • D
    onlyi) and iii) are correct.
    Correct
5
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.
  • A
    all statements are correct.
    Correct
  • B
    onlyi) is correct.
  • C
    only ii) and iii) are correct.
  • D
    onlyi) and iii) are correct.
6
A person accidentally got his adrenal gland injured. He died & reports will probably reveal that death was caused due to :
  • A
    loss of adrenal cortex function
    Correct
  • B
    Insulin shock
  • C
    loss of both
  • D
    loss of adrenal medulla function
7
Which of the following scientists won the nobel prize for discovering second messengers?
  • A
    Robert Huxley
  • B
    Martin Rodbell
  • C
    Wilbur Sutherland
    Correct
  • D
    Alfred G. Gilman
8
Which of the following gas is found to work as a second messenger?
  • A
    \({N_{\mathbf{2}}}O\)
  • B
    \(N{O_{\mathbf{2}}}\)
  • C
    \(S{O_{\mathbf{2}}}\)
  • D
    NO
    Correct
9
Read the following statements : i. endocrine system corrects the imbalance originally detected by the nervous system. ii. nerve cells and endocrine cells exist side by side in adrenal gland and pituitary.
  • A
    both are wrong
  • B
    both are correct
    Correct
  • C
    Statement i) is wrong and ii) is correct.
  • D
    Statement i) is correct and ii) is wrong.
10
Glucose will be lost in the urine of patients suffering from :
  • A
    both A & B
  • B
    diabetes insipidus
  • C
    diabetes mellitus
    Correct
  • D
    low blood pressure
11
The correct matched pair out of the following is :
  • A
    Glucagon \( \to \) hyperglycemic
    Correct
  • B
    TSH \( \to \) neurohormone
  • C
    Type 2 diabetes \( \to \) insulin dependent diabetes
  • D
    PTH \( \to \) hypocalcemic
12
Tanay is diagnosed with a tumor in his parathyroid. He will show out of the following symptoms i. excretion of calcium in urine ii. osteoporosis iii. tetany iv. deposition of calcium in kidney tubules
  • A
    only i) and iii)
  • B
    only i) and ii)
  • C
    only ii) and iii)
  • D
    only ii) and iv)
    Correct
13
Some girls develop male secondary sexual characters like beard, moustaches, hoarse voice etc. This is called
  • A
    gonadotropin excessism
  • B
    eunuchoidism
  • C
    cushions syndrome
  • D
    adrenal virilism
    Correct
14
Match the following : Disease a) Cushion syndrome b) Diabetes mellitus c) Diabetes insipidus d) Addison’s disease Hormone source responsible i) hyposecretions from pars nervosa ii) hyposecretion of mineralocorticoids iii)hyposecretion of glucocorticoids iv) hyposecretion from beta cells of pancreas
  • A
    a)-ii, b)-iii, c)-iv, d)-i
  • B
    a)-iii, b)-ii, c)-i, d)-iv
  • C
    a)-iii, b)-iv, c)-i, d)-ii
    Correct
  • D
    a)-ii, b)-i, c)-iv, d)-iii
15
Girls blind from birth attain puberty earlier than normal due to :
  • A
    non inhibition of growth hormone by melatonin
  • B
    stimulation of gonadotropins by thymosin.
  • C
    non inhibition of gonad by melatonin.
    Correct
  • D
    ovaries of inborn blind girls is quite different from other girls.