31. Granulocytes and agranulocytes are a classification of which of the following?
[A] White blood cells
[B] Red blood cells
[C] Platelets
[D] Homeostasis
Show Answer
Correct Answer: A [White blood cells]
Notes:
Granulocytes and agranulocytes are a classification of White blood cells. Granulocytes are leukocytes, with the presence of granules in their cytoplasm while Agranulocytes are leukocytes, with the absence of granules in their cytoplasm.
32. Gastroesophageal reflux disease is related to which of the following?
[A] circulatory system
[B] digestive system
[C] respiratory system
[D] excretory system
Show Answer
Correct Answer: B [digestive system]
Notes:
Gastroesophageal reflux disease is related to the digestive system. Gastroesophageal reflux disease (GERD) occurs when stomach acid repeatedly backs up into the tube connecting your mouth and stomach (esophagus).
33. The opening of the infundibulum into the body cavity is called?
[A] isthmus
[B] ampulla
[C] ostium
[D] thalamus
Show Answer
Correct Answer: C [ostium]
Notes:
The opening of the infundibulum into the body cavity is called the ostium.
34. Blue-Green algae are __
[A] Symbiotic Nitrogen-Fixing Cyanobacteria
[B] Free-Living Nitrogen-Fixing Bacteria
[C] Loose Association of Nitrogen-Fixing Bacteria
[D] Symbiotic Nitrogen-Fixing Bacteria
Show Answer
Correct Answer: A [Symbiotic Nitrogen-Fixing Cyanobacteria]
Notes:
Blue-Green algae are Symbiotic Nitrogen-Fixing Cyanobacteria. Liverworts, cycad roots, fern, and lichens are also some of the Nitrogen-fixing cyanobacteria.
35. An animal, plant, or micro-organism whose DNA has been altered using genetic engineering techniques is called?
[A] Genetically Matured Organisms
[B] Genetically Mental Organs
[C] Genetically Modified Organisms
[D] Genetically Mutant Organism
Show Answer
Correct Answer: C [Genetically Modified Organisms]
Notes:
An animal, plant, or micro-organism whose DNA has been altered using genetic engineering techniques is called Genetically Modified Organisms.
36. A method for the delivery of nucleic acids to cells by high-speed particle bombardment is called?
[A] Transformation
[B] Biolistics
Biolistics
[C] Sequencing
[D] None of these
Show Answer
Correct Answer: B [Biolistics
Biolistics]
Notes:
A method for the delivery of nucleic acids to cells by high-speed particle bombardment is called Biolistics.
37. Which of the following brings back deoxygenated blood from different parts of human body to heart?
[A] Veins
[B] Arteries
[C] Nerves
[D] Lungs
Show Answer
Correct Answer: A [Veins]
Notes:
Veins carry the deoxygenated blood from different parts of the body to the heart. There are two main veins that carry out this job. The superior vena cava carries deoxygenated blood from head, neck, thorax and hands to the right atrium of our heart. The inferior vena cava carries deoxygenated blood from legs, pelvic region and abdominal organs to the right atrium of our heart. Among the veins, only pulmonary vein carries oxygenated blood.
38. What are the folds found in the mucous lining of the empty stomach?
[A] Typhlosole
[B] Areolae
[C] Rugae
[D] Villi
Show Answer
Correct Answer: C [Rugae]
Notes:
The inner layer of the stomach is full of wrinkles known as rugae (or gastric folds). Rugae both allow the stomach to stretch in order to accommodate large meals and help to grip and move food during digestion.
39. Activity of an enzyme can be modulated by change of
____:
[A] pH
[B] Light
[C] Humidity
[D] Rainfall
Show Answer
Correct Answer: A [pH]
Notes:
Changes in pH which can accompany metabolic process such as respiration (aerobic glycolysis for example) can alter the conformation of an enzyme and hence enzyme activity such as salivarya mylase is effective in neutral condition, pepsin in acidic condition l.5 (less than pH 7) and trypsin in basic condition (more than pH 7).
40. Which type of pathogen causes the water-borne disease Ascariasis?
[A] Viral
[B] Protozoan
[C] Parasitic
[D] Bacterial
Show Answer
Correct Answer: C [Parasitic]
Notes:
Ascariasis is a disease caused by the parasitic roundworm Ascaris lumbricoides. Infection occurs by eating food or drink contaminated with Ascaris eggs from feces. Ascariasis is most common in places without modern sanitation.
