31. Gene is the unit of inherited material that is encoded by a strand of DNA. Which substance produces it?
(a) Fats
(b) RNA
(c) Cholesterol
(d) Proteins
32. Where are genes located in higher organisms?
(a) Kidney
(b) Heart
(c) Nerve cells
(d) Chromosomes
33. Who coined the term Gene in 1909?
(a) John Dalton
(b) Dalton Gene
(c) Wilhelm Johannes
(d) None of these
34. Name the way in which the instructions for building proteins, the basic structural molecules of living matter, are written in the genetic material DNA?
(a) Genetic Code
(b) Inheritance code
(c) Coding
(d) Structure code
35. Which organ secretes essential substances?
(a) Heart
(b) Gland
(c) Kidney
(d) Inner ear
36. There are two types of glands: exocrine and endocrine. Which of the following is/are endocrine glands?
(a) Thyroid glands
(b) Pituitary glands
(c) Adrenal glands
(d) All of these
37. Exocrine glands secrete substances (perspiration, tears, mucus, saliva) via ducts into internal organs or onto the body surface. What Endocrine Gland secretes into the bloodstream?
(a) Bone marrow
(b) Hormones
(c) Sugar
(d) Insulin
38. What is called the fine filament growing from the skin?
(a) Hormones
(b) Nails
(c) Virus
(d) Hair
39. Each hair grows from a hole-shaped follicle rooted in the second layer of the skin. What is this layer called?
(a) Dermis
(b) Epidermis
(c) Keratin
(d) Magna
40. What is the function of the pancreas?
(a) Keep control in grown
(b) Store food for emergency
(c) Prepare the organism during stress for ‘fight or flight’
(d) Regulate the metabolism of glucose, fats, proteins