31. Breathing, heartbeat, sleep, wakefulness, and motor learning are controlled by which part of the brain?
[A] Forebrain
[B] Midbrain
[C] Hindbrain
[D] All of the above
Show Answer
Correct Answer: C [Hindbrain]
Notes:
Breathing, heartbeat, sleep, wakefulness, and motor learning are controlled by Hindbrain. The hindbrain is composed of Cerebellum, Medulla, and Pons.
32. The open space between bones is filled by which of the following?
[A] air
[B] blood
[C] bone cells
[D] bone marrow
Show Answer
Correct Answer: D [bone marrow]
Notes:
Bone marrow is found in the hollow center of bones. Bone marrow cells – the soft, fatty core of many bones, this protected hollow space makes red blood cells and releases them into the bloodstream.
33. What happens when the luteinizing hormone increases?
[A] stimulates contraction of uterus
[B] ovaries to release eggs
[C] maintains milk production in breasts
[D] All of the above
Show Answer
Correct Answer: B [ovaries to release eggs]
Notes:
Ovaries release eggs when the luteinizing hormone increases.
34. The membrane investing the ovum just outside the membrane granulosa is __.
[A] theca interna
[B] discus proligerus
[C] zona pellucida
[D] vitelline membrane
Show Answer
Correct Answer: A [theca interna]
Notes:
Theca Interna cells express receptors for luteinizing hormone (LH) to produce androstenedione.
35. Which organ is affected by Japanese encephalitis?
[A] brain and spinal cord
[B] lungs
[C] liver and pancreas
[D] heart
Show Answer
Correct Answer: A [brain and spinal cord]
Notes:
The Brain and spinal cord organs are affected by Japanese encephalitis. This is a viral infection caused by infected mosquitoes in Asia and the western Pacific.
36. Which of the following relationship was not studied by Mendel?
[A] Flower colour and seed colour
[B] Height and seed colour
[C] Flower colour and shape of pollen grain
[D] Height and seed coat colour
Show Answer
Correct Answer: C [Flower colour and shape of pollen grain]
Notes:
Flower colour and shape of pollen grain relationship was not studied by Mendel.
37. Which of the following is a product of biotechnology?
[A] Bacteria
[B] Skin
[C] Vaccine
[D] Plants
Show Answer
Correct Answer: C [Vaccine]
Notes:
The vaccine is a product of biotechnology. Vaccines prepare the immune system to recognize and attack invaders or antigens.
38. Which of the following is the longest vein in the human body?
[A] Trochlear
[B] Saphenous vein
[C] Inferior vena cava
[D] Trigeminal
Show Answer
Correct Answer: B [Saphenous vein]
Notes:
The great saphenous vein, the major superficial vein of the medial leg and thigh, is the longest vein in the human body. It extends from the top of the foot to the upper thigh and groin, running along the length of the lower limb. It plays an important role in returning blood from the superficial tissues of the leg to the heart.
39. The biological process in which both aerobes and anaerobes degrade organic matter is ____:
[A] Digesting
[B] Composting
[C] Manuring
[D] Nutrifying
Show Answer
Correct Answer: B [Composting]
Notes:
Composting is the depomposition of plant remains and other once-living materials to make an earthy, dark, crumbly substance that is excellent for enriching soil. It is the chief way to recycle wastes.
40. Panthera pardus is the scientific name of ____:
[A] Panther
[B] Leopard
[C] Lion
[D] Tiger
Show Answer
Correct Answer: B [Leopard]
Notes:
Panthera pardus is the scientific name of leopard, one of the five “big cats” in the genus Panthera. It is a member of the family Felidae with a wide range in sub-Saharan Africa and parts of Asia. It belongs to the Chordata phylum, Mammalia class and Carnivora order.
