Logic of a solution: *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.*
*(G)*
The original question: *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*

Line 1: *Adult sponges produce eggs and sperm. Female gametes are called eggs. Adult sponges produce female gametes and sperm.*
*(D)*
Line 2: *Adult sperm are capable of producing sperm and what in order to be able to reproduce?
Options:
- (A) Plants growth
- (B) reproduce
- (C) skin cells
- (D) female gametes
- (E) it needs them
- (F) kinetic energy
- (G) estrogen
- (H) vaginas*

Logic of a solution: *Chromosomes are the form of the genetic material of a cell during cell division. Mitosis is cell division. Chromosomes are the form of the genetic material of a cell during mitosis.*
*(A)*
The original question: *What are the form of the genetic material of a cell during mitosis?
Options:
- (A) chromosomes
- (B) graptolites
- (C) fur and fat
- (D) peachleaf willow
- (E) pollen
- (F) Leptospirosis
- (G) animals
- (H) it can be seen*

Line 1: *Some viruses can cause cancer. Skin cancer can kill. Some viruses can kill.*
*(H)*
Line 2: *Some viruses can what?
Options:
- (A) fret
- (B) harm
- (C) damage
- (D) grow
- (E) expand
- (F) discover
- (G) visit
- (H) kill*

Logic of a solution: *Plants have specialized reproductive organs. Plant reproduction is similar to animal reproduction. Animals have specialized reproductive organs.*
*(A)*
The original question: *What is something that has specialized reproductive organs?
Options:
- (A) animals
- (B) insects
- (C) Conifers
- (D) burrs
- (E) potatoes
- (F) rabbit
- (G) sharks
- (H) ducks*

Logic of a solution: *Many consumers feed at more than one trophic level. Consumers include insects and animals. Many insects and animals feed at more than one trophic level.*
*(D)*
The original question:
*What do many insects and animals feed at?
Options:
- (A) Something that makes plants green
- (B) only higher trophic levels
- (C) one consumer level
- (D) More than one trophic level.
- (E) organic matter
- (F) important habitats
- (G) Microscopic organisms
- (H) less than one trophic level*