Tag: chemical coordination and integration

Questions Related to chemical coordination and integration

Erythropoietin is a

biology chemical coordination and integration kidney hormones coordination in human beings- chemical control endocrine system in humans

  1. Lipid

  2. Mucopolysaccharide

  3. Glycoprotein

  4. Nucleoprotein

Show answer
Correct Option: C
Explanation:
  • Erythropoietin is a hormone released by the kidney.
  • It is a glycoprotein. 
  • This hormone helps in the proliferation and differentiation of erythrocyte precursors.
  • Thus, they produce red blood cells (RBCs) from the bone marrow cells and this process is also known as erythropoiesis.
  • The cells of the kidney that produces erythropoietin are sensitive to low oxygen levels in the blood that travels to the kidney.
  • So, the correct answer is 'Glycoprotein'.

Erythropoietin is produced by

biology chemical coordination and integration kidney hormones coordination in human beings- chemical control endocrine system in humans

  1. Thymus

  2. Pituitary

  3. Heart

  4. Kidney

Show answer
Correct Option: D
Explanation:
A. Thymus secretes thymosins. 
B. Pituitary secretes thyroid stimulating hormone (TSH), adenocorticotropin hormone (ACTH), growth hormone (GH), follicle stimulating hormone (FSH), luteinizing hormone (LH) and melanocyte stimulating hormone (MSH).
C. Heart secretes atrial natriuretic factor (ANF).
D. Kidney secretes erythropoietin (EPO) and renin.
So, the correct answer is 'Kidney'.

Erythropoietin is released by

biology chemical coordination and integration kidney hormones coordination in human beings- chemical control endocrine system in humans

  1. Bone marrow

  2. Spleen

  3. Kidneys

  4. Liver

Show answer
Correct Option: C
Explanation:
  • Erythropoietin is a hormone released by the kidney.
  • It is a glycoprotein. 
  • This hormone helps in the proliferation and differentiation of erythrocyte precursors.
  • Thus, they produce red blood cells (RBCs) from the bone marrow cells and this process is also known as erythropoiesis.
  • The cells of the kidney that produces erythropoietin are sensitive to low oxygen levels in the blood that travels to the kidney.
  • The extrarenal site for erythropoietin release is liver.
  • So, the correct answer is 'Kidneys'.

Choose the correct answer from the alternatives given.
Which of the following is not a means by which oxygen and/or carbon dioxide are transported in the bloodstream of vertebrates?

biology chemical coordination and integration kidney hormones coordination in human beings- chemical control endocrine system in humans

  1. As oxyhaemoglobin

  2. As hydrogencarbonate ions

  3. In solution in the plasma

  4. Erythropoietin

Show answer
Correct Option: D
Explanation:

Carbon dioxide is transported in the blood from the tissue to the lungs in three ways: (i) dissolved in solution in the plasma; (ii) buffered with bicarbonate (i.e as hydrogen carbonate ions) and (iii) bound to proteins, particularly hemoglobin.  So, the correct option is 'Erythropoietin'.

Erythropoietin stimulates

biology chemical coordination and integration kidney hormones coordination in human beings- chemical control endocrine system in humans

  1. Osmoregulation

  2. Formation of RBC

  3. Reduces blood pressure

  4. Formation of WBC

Show answer
Correct Option: B
Explanation:
Erythropoietin is also known as haemopoietin. It is a glycoprotein secreted from juxtaglomerular cells of kidney. It stimulates the formation of RBCs in bone marrow and this process is called erythropoiesis. RBCs (Red Blood Cells) carry oxygen and transport it to various parts of body. Erythropoietin is secreted in response to hypoxic conditions i.e. low oxygen in body.
So, the correct answer is 'Formation of RBC'.

Chymase is a

biology chemical coordination and integration kidney hormones coordination in human beings- chemical control endocrine system in humans

  1. Rennin

  2. Activator of prorennin

  3. Activator of chymotrypsinogen

  4. Gastric juice

Show answer
Correct Option: C
Explanation:
  • Chymase is a chymotrypsin-like serine protease found in the mast cells and also present in basophil granulocytes.
  • Chymase hydrolyzes chymotryptic substrates by activating chymotrypsinogen.
  • So, the correct answer is 'Activator of chymotrypsinogen'.

Deficiency of hormones is caused to due to

biology chemical coordination and integration hormones coordination in human beings- chemical control endocrine system in humans

  1. Hyposecretion

  2. Hyperscretion

  3. Sweating

  4. None of the above

Show answer
Correct Option: A
Explanation:

  •  Hyposecretion- too little of any hormone in the body can be caused by a large pituitary tumour, which interferes with the pituitary gland's ability to produce hormones. Hence, Deficiency of hormones is caused to due to Hyposecretion.
So, the correct answer is 'Hyposecretion'.

Which of the following is known as chemical messenger?

biology chemical coordination and integration hormones coordination in human beings- chemical control endocrine system in humans

  1. Hormone

  2. Enzyme

  3. Colostrum

  4. None of the above

Show answer
Correct Option: A
Explanation:
A. Hormones are the chemical substances that are secreted in the body by the endocrine glands. They are known as body's chemical messengers.
B. Enzymes are colloidal macromolecules that are water soluble and partially or wholly proteinaceous in nature.
C. Colostrum is a form of milk produced from mammary glands in mammals.
So, the correct answer is 'Hormone'.

Enzymes, vitamins and hormones are common in

biology chemical coordination and integration hormones coordination in human beings- chemical control endocrine system in humans

  1. Being proteinaceous

  2. Being synthesised in the body organisms

  3. Enhancing oxidative metabolism

  4. Regulating metabolism

Show answer
Correct Option: D
Explanation:
Feedback inhibition is the process by where the end product terminates the reaction. The accumulation of the end product interferes with the enzymatic activity by changing the shape of its active site. Enzymes and hormones regulate the metabolism by feedback inhibition.
Enzymes are protein in nature and catalyzes the biological reaction without being used up in the chemical reaction. They regulate the chemical reaction by feedback inhibition. 
Hormones are the chemical messenger which activates the effector gland and regulate the metabolism by feedback inhibition.
Vitamins acts as a coenzymes which regulates the enzymatic activity and further regulate the metabolism.
So, the correct answer is option D.

Which of the statements given below are correct 
I) Hormones are non-nutrient chemical 
II) Hormones act as intracellular chemicals
III) Hormones are produced in moderate quantity
IV) Hormones may be proteins, steroids , glycoproteins or biogenic amines

biology chemical coordination and integration hormones coordination in human beings- chemical control endocrine system in humans

  1. I and II

  2. II and III

  3. III and IV

  4. I and IV

Show answer
Correct Option: A