531. Basidiospores are considered to be a major source of:
A) Water-borne allergens
B) Airborne allergens
C) Animal feces
D) Bio-weapon
532. Vitamin C is found in:
(A) Seeds
(B) Seafood
C) Fruits and Vegetables
(D) None of these
533. What is the chemical formula of Ozone?
A) C12
B) H2O
C) O3
D) CH4
534. When a ray of sunlight enters a dark room, its straight path becomes visible because of dust particles hanging in the air. It is because light is:
A) Transparent
B) Visible
C) Invisible
D) Opaque
535. __ is the “Work done in moving a unit charge between two points in an electric circuit”?
A) Current
B) Potential difference
C) Power
D) Resistance
536. Ice mass that covers more than fifty-thousand square kilometers of land area is classified as:
A) Ice field
B) Ice sheet
C) Glacier erosions
D) Ice cap
537. Insufficient blood supply in the human body is referred to as:
A) Hyperemia
B) Ischemia
C) Hemostasis
D) Hemorrhage
538. Parkinson’s is a disease of:
(A) Eyes
(B) Lungs
C) Brain
(D) Bones
539. Which month of the calendar year can lack a new moon?
A) December
B) February
C) May
D) None of these
540. Deuterium differs from hydrogen in having:
A) Different nuclear number yet the same nuclear weight
B) Different atomic number and different atomic weight
C) Same atomic number and different atomic weight
D) None of these
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