Biology : Chemical Coordination and Integration

Cells die at the time of release of secretory materials in

• holocrine gland

• apocrine gland

• merocrine gland

• mixed or apocrine gland

Melatonin is produced from

• pineal gland

• adrenal gland

• parathyroid gland

• ovary

Zymogenic cells of gastric gland secrete

• pepsinogen

• trypsin

• pepsin

• chymotrypsin

Which one of the following is called intra-specific chemical messenger?

• Pheromones

• Prostaglandins

• Corticotrophin

• Catecholamines

Which one of the following secretes glucagon?

• Beta ($\mathrm{\beta }$) cells of islets of Langerhans

• Alpha ($\mathrm{\alpha }$) cells of islets of Langerhans

• Acidophilic cells of adenohypophysis

• Basophilic cells of adenohypophysis

Which one of the following enzymes is responsible for the conversion of norepinephrine to epinephrine?

• Catecholamine-O-methyltransferase

• Phenylalanine-N-methyltransferase

• DOPA decarboxylase

• Monoamine oxidase

The hormone that stimulates the release of pancreatic juice is

• secretin

• glucagon

• inhibin

• insulin

Match the following Columns.

Column I	Column II
A. Hyperthyroidism	1. Myxedema
B. Hyposecretion of glucocorticoids	2. Addison's disease
C. Hypothyroidism- I	3. Increased metabolic rate
D. Hyperparathyroidism	4. Cushing's syndrome 5. Kidney stone

• A- 3; B- 2; C- 1; D- 5

• A- 3; B- 4; C- 1; D- 2

• A- 1; B- 4; C- 3; D- 2

• A- 1; B- 2; C- 3; D- 5

What would not take place if chromaffin cells of adrenal medulla undergoes oncogenesis?

• High blood sugar and glucosuria

• High BMR

• Pheochromocytomas

• Low blood pressure

Glands in a vertebrate body originate from

• ectoderm, mesoderm and endoderm

• ectoderm and endoderm

• mesoderm

• ectoderm