Class 11 Biology Chemical Coordination and Integration MCQs with Answers

Class 11 Biology Chemical Coordination and Integration MCQs with Answers offer a targeted and comprehensive study tool for Sainik School aspirants preparing for their biology exams. These multiple-choice questions are intricately designed to align with the class 11 biology syllabus, specifically focusing on the critical topic of chemical coordination and integration within the human body. With clear and concise answers provided, students benefit from efficient self-assessment, helping identify strengths and areas for improvement in understanding the complexities of biological coordination.

As Sainik School candidates gear up for entrance exams, practicing these MCQs not only enhances exam readiness but also sharpens analytical and problem-solving skills crucial for success. The content aligns with the broader goals of Sainik School education, emphasizing a holistic understanding of biological processes. This resource serves as a strategic tool, assisting students in building a strong foundation for future academic endeavors and meeting the specific requirements of Sainik School biology examinations.

Q1. Injury to adrenal cortex is not likely to affect the secretion of which one of the following?

1. Aldosterone.
2. Both Androstenedione and Dehydroepiandrosterone.
3. Adrenaline.
4. Cortisol.

Q2. The hormone which regulates the basal metabolism in our body is secreted from:

1. Pituitary.
2. Thyroid.
3. Adrenal cortex.
4. Pancreas.

Q3. In the body, both the blood sodium and potassium levels are regulated by _.

1. Pheromones
2. Aldosterone
3. Cortisol
4. Androgens

Q4. The only unicellular exocrine glands in our body are:

1. Mucus secreting goblet cells.
2. Mammary glands.
3. Sebaceous glands.
4. Sweat glands.

Q5. Insulin is:

1. Vitamin
2. Lipid
3. Hormone
4. Enzyme

Q6. Which one of the following pairs correctly matches a hormone with a disease resulting from its deficiency?

1. Luteinizing hormone – Failure of ovulation.
2. Insulin – Diabetes insipidus.
3. Thyroxine – Tetany.
4. Parathyroid hormone – Diabetes mellitus.

Q7. Which of the following endocrine gland stores its secretion in the extracellular space before discharging into the
blood?

1. Pancreas
2. Adrenal
3. Testis
4. Thyroid

Q8. Mary is about to face an interview. But during the first five minutes before the interview she experiences
sweating, increased rate of heart beat, respiration etc. Which of the following hormones are responsible for her
restlessness?

1. Estrogen and progesterone.
2. Oxytocin and vasopressin.
3. Adrenaline and noradrenaline.
4. Insulin and glucagon.

Q9. Feeling the tremors of an earthquake a scared resident of seventh floor of a multistoryed building starts climbing
down the stairs rapidly.
Which hormone initiated this action?

1. Thyroxin [2007]
2. Adrenalin
3. Glucagon
4. Gastrin

.

Q10. Hormones generally cause a response in a cell by:

1. Halting all other cellular activity except the required response.
2. Nteracting directly with the cell’s DNA.
3. Binding with a receptor and stimulating protein production.
4. Changing the polarity of the cell membrane and causing a cascade of events within the cell.

Q11. Which hormone causes dilation of blood vessels, increased oxygen consumption and glucogenesis?

1. ACTH
2. Insulin
3. Adrenalin
4. Glucagon

Q12. Hormones thyroxine, adrenalin and the pigment melanin are formed from:

1. Tryptophan
2. Glycine
3. Tyrosine
4. Proline

Q13. Diabetes is due to:

1. Iodine deficiency.
2. Hormonal deficiency.
3. Na deficiency.
4. Enzyme deficiency.

Q14. ADH or vasopressin is:

1. Enzyme that hydrolyses peptides.
2. Hormone secreted by pituitary that promotes reabsorption of water from glomerular filtrate.
3. Hormone that promotes glycogenolysis.
4. Energy rich compound connected with muscle contraction.

.

Q15. What is the function of Atrial Natriuretic Factor (ANF)?

1. Decreased blood pressure.
2. Increased blood pressure.
3. Decreased heart rate.
4. Increased heart rate.