Class 10/Specimen Paper
Created by Titas Mallick
Biology Teacher • M.Sc. Botany • B.Ed. • CTET (CBSE) • CISCE Examiner
BioNotesBioNotesCreated by Titas Mallick
Biology Teacher • M.Sc. Botany • B.Ed. • CTET (CBSE) • CISCE Examiner
Online
ICSE Suggested Specimen Paper Based Preparation Guide
After a large, carbohydrate-rich meal, which hormone would you expect to be released in significant amounts by the pancreas? What is its function?
A person is feeling constantly tired, has gained weight despite not changing their diet, and feels cold often. A blood test reveals low levels of thyroxine. What condition do they likely have?
Odd One Out: Insulin, Glucagon, Adrenaline, Thyroxine.
Compare and Contrast: Explain the opposing actions of insulin and glucagon in regulating blood sugar.
Type 1 Diabetes: An Autoimmune Disorder
Type 1 diabetes is a chronic condition in which the pancreas produces little or no insulin. It is an autoimmune disease, meaning the body's own immune system mistakenly attacks and destroys the insulin-producing cells (beta cells) in the Islets of Langerhans. Without insulin, glucose cannot enter the cells to be used for energy and instead builds up in the bloodstream, leading to hyperglycemia. Patients with Type 1 diabetes require lifelong insulin therapy, either through injections or an insulin pump, to manage their blood sugar levels. This case study highlights the critical role of a single hormone, insulin, in metabolism and demonstrates the severe consequences of its absence.
Assertion (A): The pituitary gland is often called the "master gland." Reason (R): The pituitary gland secretes tropic hormones, such as TSH and ACTH, which control the function of other endocrine glands.
(a) Both (A) and (R) are true and (R) is the correct explanation of (A). (b) Both (A) and (R) are true but (R) is not the correct explanation of (A). (c) (A) is true but (R) is false. (d) (A) is false but (R) is true.
Some athletes illegally use synthetic Growth Hormone (GH) to build muscle mass. Using your knowledge of negative feedback loops, what would be the likely effect of long-term use of synthetic GH on the athlete's own pituitary gland and its natural production of GH?