Chemical Coordination and Integration Test -5

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Chemical Coordination and Integration Test -5

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Weekly Quiz Competition

Question 1
1 / -0

Following conversion in forward and backward directions is regulated as :
(i)→ ⇔ ← (ii)
Blood calcium Bone calcium
A

is epinephrine and

is norepinephrine
B

is Ca++ and

is phosphorus
C

is TCT and

is PTH
D

is PTH and

is TCT
Solution

Thyrocalcitonin (TCT) influence the metabolism of calcium inside the body. Parathyroid hormone (PTH) absorption of calcium in bone.
Question 2
1 / -0

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.

Solution

Hormone receptors present on the cell membrane of the target cells are called membrane-bound receptors and the receptors present inside the target cell are called intracellular receptors, mostly nuclear receptors (present in the nucleus). Binding of a hormone to its receptor leads to the formation of a hormone-receptor complex.
Question 3
1 / -0

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 i) and iii) are correct.

B
only ii) and iii) are correct.

C
only i) and ii) are correct.

D
all are correct.

Solution

If decreased blood pressure is detected, the adrenal gland is stimulated by these stretch receptors to release aldosterone, which increases sodium reabsorption from the urine, sweat, and the gut. This causes increased osmolarity in the extracellular fluid, which will eventually return blood pressure toward normal.
Question 4
1 / -0

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
only i) is correct.

B
only i) and iii) are correct.

C
only ii) and iii) are correct.

D
all statements are correct.

Solution

The adrenal glands (also known as suprarenal glands) are endocrine glands that produce a variety of hormones including adrenaline and the steroids aldosterone and cortisol. They are found above the kidneys. Also Known as the emergency gland of the body.This is because it produces a homone called ADRENALIN which prepares our body from emergencies
Question 5
1 / -0

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

B
Insulin shock

C
loss of both adrenal medulla function and adrenal cortex function

D
loss of adrenal medulla function

Solution

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 response which will be reveled in report.
Question 6
1 / -0

Which of the following scientists won the nobel prize for discovering second messengers?

A
Alfred G. Gilman

B
Robert Huxley

C
Martin Rodbell

D
Wilbur Sutherland

Solution

Second messengers are molecules that relay signals received at receptors on the cell surface to trigger physiological changes.

The Nobel Prize in Physiology or Medicine 1971 was awarded to Earl W. Sutherland, Jr. "for his discoveries concerning the mechanisms of the action of hormones".
Question 7
1 / -0

Which of the following gas is found to work as a second messenger?

A
NO

B
SO₂

C
N₂O

D
NO₂

Solution

Second messengers are molecules that relay signals received at receptors on the cell surface to trigger physiological changes. Nitrogen oxide (NO) acts as second messenger.
Question 8
1 / -0

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
Statement i) is correct and ii) is wrong.

B
Statement i) is wrong and ii) is correct.

C
both are wrong

D
both are correct

Solution

Endocrine system corrects the imbalance originally detected by the nervous system. Nerve cells and endocrine cells exist side by side in adrenal gland and pituitary gland.
Question 9
1 / -0

Glucose will be lost in the urine of patients suffering from :

A
diabetes mellitus

B
diabetes insipidus

C
low blood pressure

D
both diabetes mellitus and diabetes insipidus

Solution

Glucose will be lost in the urine of patients suffering from diabetes mellitus. It a chronic lifelong condition that affects our body ability to use the energy found in blood.

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Re-Attempt Weekly Quiz Competition

Chemical Coordination and Integration Test -5

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Chemical Coordination and Integration Test -5

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SHARING IS CARING

Question 1

is epinephrine and is norepinephrine

is Ca++ and is phosphorus

is TCT and is PTH

is PTH and is TCT

Solution

Question 2

cytosolic receptors.

nuclear receptors.

plasma proteins.

cell membrane bound receptors.

Solution

Question 3

only i) and iii) are correct.

only ii) and iii) are correct.

only i) and ii) are correct.

all are correct.

Solution

Question 4

only i) is correct.

only i) and iii) are correct.

only ii) and iii) are correct.

all statements are correct.

Solution

Question 5

loss of adrenal cortex function

Insulin shock

loss of both adrenal medulla function and adrenal cortex function

loss of adrenal medulla function

Solution

Question 6

Alfred G. Gilman

Robert Huxley

Martin Rodbell

Wilbur Sutherland

Solution

Question 7

NO

SO2

N2O

NO2

Solution

Question 8

Statement i) is correct and ii) is wrong.

Statement i) is wrong and ii) is correct.

both are wrong

both are correct

Solution

Question 9

diabetes mellitus

diabetes insipidus

low blood pressure

both diabetes mellitus and diabetes insipidus

Solution

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is epinephrine and

is norepinephrine

is Ca++ and

is phosphorus

is TCT and

is PTH

is PTH and

is TCT

SO₂

N₂O

NO₂