Ques and Ans: What process is needed to support a baby in the womb?
Options:
- (A) Perspiration
- (B) Energy
- (C) heating liquids
- (D) Respiration
- (E) organs
- (F) Validation
- (G) Energy.
- (H) Doctrination
(D)
Logic chain: Oxygen is essential for cellular respiration for all aerobic organisms. Less oxygen for the mother means less oxygen for the baby. Mothers need respiration for their babies.

Ques and Ans: What might have an envelope of proteins and enzymes?
Options:
- (A) fur seals
- (B) some viruses
- (C) Most plants
- (D) a fish
- (E) animal transport
- (F) animals
- (G) chickens
- (H) it needs them
(B)
Logic chain: Some viruses have an envelope of phospholipids and proteins. Phospholipases are the enzymes that degrade phospholipids . Some viruses have an envelope of enzymes and proteins.

Ques and Ans: What makes food from co and h 2?
Options:
- (A) producers
- (B) carbon atoms
- (C) Most plants
- (D) production lines
- (E) light energy
- (F) trees
- (G) air pockets
- (H) Chlorophyll
(A)
Logic chain: Producers make food from inorganic molecules. Among the small inorganic molecules which are economically attractive are CO and H 2 . Producers make food from CO and H 2.

Ques and Ans: Where can cells bound by antibodies more likely be found?
Options:
- (A) critical organs
- (B) colder and wetter
- (C) the environment
- (D) Earth orbiting the Sun
- (E) Veins and arteries.
- (F) epidermis and dermis
- (G) on cancer cells
- (H) the skin
(G)
Logic chain:
Antigens are found on cancer cells and the cells of transplanted organs. Antibodies bound to antigen are then measured by RCAT-based amplification of the associated DNA tag. Cells bound by antibodies can be found on cancer cells and the cells of transplanted organs.