31. Which of the following is an example of a basic nervous system function?
[A] Remembering a painful experience
[B] Sweating during a yoga class
[C] Feeling afraid of the dark
[D] Learning English as a second language
Show Answer
Correct Answer: B [Sweating during a yoga class]
Notes:
Sweating during a yoga class is an example of a basic nervous system function.
32. What is a joint?
[A] A hinge
[B] A ball and socket
[C] The place where two bones are joined
[D] The place where tendons are fastened together
Show Answer
Correct Answer: C [The place where two bones are joined]
Notes:
The place where bones meet is called a joint.
There are two basic types of joints:
1. Movable joints, such as the elbow, knee, and shoulder joints, allow varying degrees of motion.
2. Fixed joints do not allow any movement of bones. The bones of the skull, except the jawbones, join in stable joints.
33. Which systems protect our body against disease-causing microbes?
[A] Immune system
[B] Digestive system
[C] Excretory system
[D] Respiratory system
Show Answer
Correct Answer: A [Immune system]
Notes:
The immune system protects our body against disease-causing microbes. The main parts of the immune system are white blood cells, antibodies, complement system, lymphatic system, spleen, thymus, and bone marrow.
34. Which of the following vitamins is stored in the liver?
[A] Vitamin K
[B] Vitamin D
[C] Vitamin E
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
Vitamin K, D, and E are stored in the liver. The liver is the chemical “factory” of the body.
35. Which of the following statements is true about the human liver?
[A] Liver is triangular in shape
[B] Liver is the only visceral organ that can regenerate
[C] Liver is the largest and the internal organ of the human body
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
The liver is triangular in shape, the only visceral organ that can regenerate and the largest and internal organ of the human body.
36. Which is the smallest Endocrine gland?
[A] Pituitary gland
[B] Pineal gland
[C] Pineal gland
[D] Adrenal gland
Show Answer
Correct Answer: A [Pituitary gland]
Notes:
The pituitary gland is one of the smallest glands of the human body and it secretes the most number hormones in the body. It is also known as the master gland of the human body.
37. The elastic tissue which connects the cauda epididymis to the scrotal sac is called __.
[A] Caput epididymis
[B] Scrotal ligament
[C] Gubernaculum
[D] Tendinous cord
Show Answer
Correct Answer: C [Gubernaculum]
Notes:
Connects the lower pole of the gonad and epididymis to the future inguinal canal is called the Gubernaculum.
38. Grey hair is caused due to
____:
[A] Aging of epidermal cells
[B] Death of dermal cells
[C] Loss of sebum in epidermal cells
[D] Loss of melanin in epidermal cells
Show Answer
Correct Answer: D [Loss of melanin in epidermal cells]
Notes:
The hair follicles have pigment cells that make melanin, a chemical that gives the hair its color. As one ages, these cells start to die. Without pigment, new hair strands grow in lighter and take on various shades of gray, silver, and eventually white.
39. Symbiotic Bacteria responsible for the fixation of atmospheric nitrogen are present in ____:
[A] Peas
[B] Oats
[C] Corn
[D] Wheat
Show Answer
Correct Answer: A [Peas]
Notes:
Nitrogen-fixing bacteria are microorganisms capable of transforming atmospheric nitrogen into fixed nitrogen. Rhizobium is one such bacteria that is associated with leguminous plants (e.g., various members of the pea family). It invades the root hairs of host plants and convert free nitrogen to ammonia, which the host plant utilizes for its development.
40. Haemoglobin has highest affinity for ____:
[A] Carbon monoxide
[B] Nitrogen
[C] Oxygen
[D] Carbon dioxide
Show Answer
Correct Answer: C [Oxygen]
Notes:
Haemoglobin is the iron-containing oxygen-transport metaloprotein in the red blood cells. It is responsible for binding oxygen in the lung and transporting the oxygen throughout the body to be used up in aerobic metabolic pathways.
