Chemical Coordination and Integration Test 56

Result

Chemical Coordination and Integration Test 56

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

Which one of the following flows directly into the blood from the site of its production to act on an organ away from it?

A
Rennin

B
Renin

C
Cholesterol

D
Cholinesterase

Solution

Renin is often improperly referred to as a hormone, although it has no peripheral receptors and rather has an enzymatic activity with which it hydrolyzes angiotensinogen to angiotensin I. The renin enzyme circulates in the blood stream and breaks down (hydrolyzes) angiotensinogen, secreted from the liver into the peptide angiotensin I.
Question 2
1 / -0

Parathormone influences calcium absorption in the small intestine by regulating the metabolism of

A
Vitamin C

B
Vitamin D

C
Vitamin $$B_{6}$$

D
Enterogasterone

Solution

Vitamin D increases blood concentrations of calcium. It is generated through the activity of parathyroid hormone within the kidney. The most important effect of vitamin D is to facilitate absorption of calcium from the small intestine. Along with thyroid hormone, vitamin D also enhances fluxes of calcium out of bone.
Question 3
1 / -0

Which of the following is an accumulation and release center of neurohormones?

A
Hypothalamus

B
Anterior pituitary lobe

C
Posterior pituitary lobe

D
Intermediate lobe of the Pituitary
Solution
- The posterior pituitary or neurohypophysis is a structure under direct regulation of the hypothalamus.
- The nuclei of the hypothalamus accumulate vasopressin and oxytocin in this neurohypophysis which serves as the release centre of these neurohormones.
So, the correct answer is 'Posterior Pituitary lobe'.
Question 4
1 / -0

Cholesterol is necessary for the synthesis of

A
Vitamin C

B
Vitamin B

C
Oestradiol

D
Insulin

Solution

One of cholesterol's many functions in the body is to act as a precursor to vitamin D. Since cholesterol is a precursor to vitamin D, inhibiting the synthesis of cholesterol will also inhibit the synthesis of vitamin D, which helps in calcium metabolism and bone health. Cholesterol is also needed for the synthesis of various hormones, including the sex hormones.
Question 5
1 / -0

Which hormone has the anti-insulin effect?

A
Calcitonin

B
Cortisol

C
Oxytocin

D
Aldosterone

Solution

Under stressful conditions, cortisol provides the body with glucose from protein stores via gluconeogenesis in the liver. This energy can help an individual fight or flee. Elevated cortisol over the long term consistently produces glucose, leading to increased blood sugar levels.
Question 6
1 / -0

Which one of the following is not a second messenger in hormone action?

A
Sodium

B
cAMP

C
cGMP

D
All of the above

Solution

Second messengers are intracellular signalling molecules, released by the cell to trigger physiological changes, such as proliferation, differentiation, migration, survival, and apoptosis. Secondary messengers are one of the initiating components of intracellular signal transduction. Examples of second messenger molecules include cyclic AMP, cyclic GMP, inositol triphosphate, diacylglycerol, and calcium.
Question 7
1 / -0

Which among the following lacks peptides, amines, and sulphur?

A
Hormones of anterior pituitary

B
Hormones of posterior pituitary and pancreas

C
Hormones of thyroid and adrenal gland

D
Hormones of testis and ovary

Solution

The natural steroid hormones are synthesized from cholesterol in the gonads and adrenal glands. These forms of hormones are lipids. They can pass through the cell membrane as they are fat soluble, and then bind to steroid hormone receptors. Pituitary, thyroid and adrenal gland secrete hormones, some of which are peptides and some are derived from amino acids.

Question 8

1 / -0

Which one of the following four secretions is correctly matched with its source, target, and nature of action?

	Secretion	Source	Target	Action
(a)	Gastrin	Stomach lining	Oxyntic cell	Production of HCI
(b)	Inhibin	Sertoli cells	Hypothalamus	Inhibition of secretion of gonadotropin releasing hormone
(c)	Enterokinase	Duodenum	Gall bladder	Release of bile juice
(d)	Atrial Natriuretic Factor (ANF)	Walls of the atria	Juxta-glomerular apparatus (JGA)	Inhibition of release of renal renin

(a)

(b)

(c)

(d)

Solution

Atrial Natriuretic Factor (ANF) is a hormone produced by the right atrium of the heart. ANF regulates kidney function by opposing the regulation by the Renin-Angiotensinogen Aldosterone system (RAR's). It acts on the JGA to inhibit the release of renin. ANF stimulates the excretion of sodium and water by the kidneys and helps lower blood pressure.
Thus, the correct answer is option D.

Question 9
1 / -0

Sumit went to a funfair with his friends Amit and Rohit. Rohit and Amit were scared to sit on a merry-go-round and preferred to stroll around. Sumit was very excited when he came down the merry-go-round. How will this change the pH of his blood?

A
Increases

B
Decreases

C
No change in pH

D
The pH level gets adjusted at 7.

Solution

Sumit went for the merry-go-round and was very excited when he came down. This is due to the release of the hormone adrenaline which is the emergency hormone. The hormone causes the person to be excited in the conditions like fright. There will be no change in the pH of the blood and the hormone does not cause any effect on the pH.
Thus, the correct answer is option C.
Question 10
1 / -0

Insulin is made of

A
$${\alpha}$$ chain of 21 amino acids and second $${\beta}$$ chain of 30 amino acids

B
$${\alpha}$$ chain of 31 amino acids and second $${\beta}$$ chain of 20 amino acids

C
Disulphide linkages

D
Both A and C
Solution
A. CORRECT ANSWER- D
B. EXPLANATION FOR THE CORRECT ANSWER
Insulin is a peptide hormone secreted in an inactive form by the beta cells in the pancreatic Islet of Langerhans.
It is composed of two peptide chains referred to as the A chain and the B chain.
A and B chains are linked together by two disulphide bonds and an additional disulphide bond is formed within the A chain.
In most species, the A chain consists of 21 amino acids and the B chain is composed of 30 amino acids.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Chemical Coordination and Integration Test 56

Result

Chemical Coordination and Integration Test 56

Score

-

Rank

-

SHARING IS CARING

Question 1

Rennin

Renin

Cholesterol

Cholinesterase

Solution

Question 2

Vitamin C

Vitamin D

Vitamin $$B_{6}$$

Enterogasterone

Solution

Question 3

Hypothalamus

Anterior pituitary lobe

Posterior pituitary lobe

Intermediate lobe of the Pituitary

Solution

Question 4

Vitamin C

Vitamin B

Oestradiol

Insulin

Solution

Question 5

Calcitonin

Cortisol

Oxytocin

Aldosterone

Solution

Question 6

Sodium

cAMP

cGMP

All of the above

Solution

Question 7

Hormones of anterior pituitary

Hormones of posterior pituitary and pancreas

Hormones of thyroid and adrenal gland

Hormones of testis and ovary

Solution

Question 8

(a)

(b)

(c)

(d)

Solution

Question 9

Increases

Decreases

No change in pH

The pH level gets adjusted at 7.

Solution

Question 10

$${\alpha}$$ chain of 21 amino acids and second $${\beta}$$ chain of 30 amino acids

$${\alpha}$$ chain of 31 amino acids and second $${\beta}$$ chain of 20 amino acids

Disulphide linkages

Both A and C

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.