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BBCCT-119 Assignment Master Index – Hormone: Biochemistry and Function (2025)

BBCCT-119 Assignment Master Index – 2025 Welcome to the complete solution index for the IGNOU course BBCCT-119: Hormone – Biochemistry and Function for the 2025 session. This post includes links to all assignment answers written in simple, student-friendly language. PART – A (Max Marks: 50) Name the endocrine gland, target organs and functions of the […]

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Write a brief notes on (i) ELISA (ii) RIA

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Short Notes (i) ELISA – Enzyme-Linked Immunosorbent Assay ELISA is a widely used biochemical technique to detect and quantify substances such as hormones, proteins, peptides, or antibodies in biological samples. Principle: ELISA uses the principle of antigen-antibody binding. An enzyme is linked to an antibody. When a specific substrate is added, the enzyme produces a

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Write short notes on the following: (i) Scatchard plot (ii) Role of cGMP as second messenger

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Short Notes (i) Scatchard Plot The Scatchard plot is a graphical method used in biochemistry to analyze the binding of a ligand (such as a hormone) to its receptor. It helps determine two key parameters: Affinity of the receptor for the ligand Number of binding sites available on the receptor Method: The amount of bound

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Discuss the functions and regulation of aldosteron.

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Introduction Aldosterone is a steroid hormone produced by the adrenal cortex, specifically from the zona glomerulosa. It plays a key role in regulating electrolyte balance, blood pressure, and fluid volume in the body. Aldosterone is part of a larger group of hormones known as mineralocorticoids. Functions of Aldosterone Aldosterone acts mainly on the kidneys and

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Write functions of VIP and adiponectin; Differentiate between type I and type II diabetes mellitus.

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Part A: Functions of VIP and Adiponectin 1. Vasoactive Intestinal Peptide (VIP) VIP is a neuropeptide hormone that acts as a neurotransmitter and a vasodilator. Functions: Relaxes smooth muscles in the gastrointestinal tract. Stimulates secretion of water and electrolytes in the intestines. Inhibits gastric acid secretion. Promotes dilation of blood vessels, improving blood flow. Modulates

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Explain the structure and functions of parathyroid hormone; Discuss the synthesis and functions of vitamin D.

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Part A: Structure and Functions of Parathyroid Hormone (PTH) Structure of Parathyroid Hormone Parathyroid hormone (PTH) is a polypeptide hormone composed of 84 amino acids. It is synthesized and secreted by the parathyroid glands, which are small glands located behind the thyroid. PTH is initially produced as a larger inactive precursor called preproPTH, which is

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Write secretory cells and primary action of the following growth factors: (i) Insulin like growth factor (ii) Platelet derived growth factor; Expand the acronym EPO. Explain its functions and applications.

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Part A: Secretory Cells and Primary Action of Growth Factors (i) Insulin-like Growth Factor (IGF) Secretory Cells: Primarily secreted by the liver in response to growth hormone (GH) stimulation. Also produced in small amounts by other tissues like skeletal muscles. Primary Action: Stimulates cell growth, development, and differentiation. Promotes protein synthesis in muscle and bone

Write secretory cells and primary action of the following growth factors: (i) Insulin like growth factor (ii) Platelet derived growth factor; Expand the acronym EPO. Explain its functions and applications. Read More »

What are growth factors? Enlist four growth factors along with their source and primary action.

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Introduction Growth factors are naturally occurring proteins or peptides that stimulate cell growth, proliferation, healing, and cellular differentiation. They play a crucial role in embryonic development, tissue regeneration, wound healing, and maintaining normal cellular functions. Growth factors act by binding to specific receptors on the surface of their target cells, triggering signaling pathways. Definition Growth

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Draw outline of biochemical pathways indicating synthesis of human sex hormones from cholesterol. Enlist three functions of estrogen.

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Introduction Human sex hormones like estrogen, progesterone, and testosterone are steroid hormones synthesized from cholesterol. This synthesis involves a series of biochemical steps occurring primarily in the adrenal cortex, ovaries (in females), and testes (in males). Understanding this pathway helps explain how sex hormones regulate reproduction, growth, and development. Outline of Biochemical Pathway for Sex

Draw outline of biochemical pathways indicating synthesis of human sex hormones from cholesterol. Enlist three functions of estrogen. Read More »

Name the hormone associated with the following diseases. What are their symptoms? (i) Acromegaly (ii) Hashimoto disease (iii) Goitre (iv) Osteoporosis

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Introduction Hormonal imbalances are often the root cause of several chronic diseases. In this article, we will discuss four conditions—acromegaly, Hashimoto’s disease, goitre, and osteoporosis—and the hormones associated with each, along with their symptoms. Understanding these links helps in early diagnosis and effective treatment. (i) Acromegaly Associated Hormone: Growth Hormone (GH) Cause: Overproduction of growth

Name the hormone associated with the following diseases. What are their symptoms? (i) Acromegaly (ii) Hashimoto disease (iii) Goitre (iv) Osteoporosis Read More »