Line 1: *Lymphocytes are the key cells involved in the immune response. Antibodies are synthesised by lymphocytes. Antibodies are involved in the immune response.*
*(H)*
Line 2: *What response are antibodies involved in?
Options:
- (A) resistance activities
- (B) the pituitary response
- (C) major threat to health
- (D) antigens summoning them
- (E) Leptospirosis
- (F) being taken as a supplement
- (G) resistance
- (H) the immune response*

Logic of a solution: *Most invertebrates have a more complex nervous system. Jellyfish and insects are invertebrates. Jellyfish have a more complex nervous system.*
*(F)*
The original question: *Which of the following has the most complex nervous system?
Options:
- (A) animals
- (B) nerves
- (C) fur seals
- (D) humans
- (E) elephants
- (F) Jellyfish
- (G) bears
- (H) kalenchoes*

Line 1: *Most protists have motility. All animals are motile, moving about at some point in their life cycle. Most protists are able to move.*
*(E)*
Line 2: *Which can move?
Options:
- (A) Raft
- (B) light energy
- (C) vehicles
- (D) insects
- (E) protists
- (F) bicycle
- (G) animals
- (H) an object*

Logic of a solution: *Roundworms make up the phylum Nematoda. Nematodes are simple roundworms. Nematodes are in the phylum Nematoda.*
*(H)*
The original question: *What phylum are nematodes in?
Options:
- (A) Most plants
- (B) ferns
- (C) parasites
- (D) Epidermis
- (E) white
- (F) insects
- (G) graptolites
- (H) Nematoda*

Line 1: *Muscles can only contract. When contracted the triceps femoris pulls the thigh forward and extends the shank. Muscles like the triceps femoris are used to move bones.*
*(H)*
Line 2: *The trcipes femoris is used to move what?
Options:
- (A) heat
- (B) Mass
- (C) Weight
- (D) feet
- (E) matter
- (F) people
- (G) embryos
- (H) bones*

Line 1: *Shivering occurs when many muscles contract a little bit all at once. Heat production is increased by shivering and non-shivering thermogenesis . Heat production occurs when many muscles contract a little bit all at once.*
*(A)*
Line 2:
*What ccurs when many muscles contract a little bit all at once?
Options:
- (A) heat production
- (B) heat loss
- (C) sweating
- (D) permineralization
- (E) hypothermia
- (F) resistance
- (G) cramping
- (H) heat energy*