Line 1: *Mollusks have a circulatory system with one or two hearts that pump blood. Interestingly, a squid is also a mollusk. Squids have a circulatory system.*
*(F)*
Line 2: *Which animals have a circulatory system?
Options:
- (A) insects
- (B) mammals
- (C) fur seals
- (D) sharks
- (E) cows
- (F) squids
- (G) a fish
- (H) chickens*
Logic of a solution: *Freshwater biomes have water that contains little or no salt. Freshwater biomes have suffered mainly from pollution. Biomes that have suffered mainly from pollution have water that contains little or no salt.*
*(D)*
The original question: *Biomes that have suffered mainly from pollution have water that contains little or no what?
Options:
- (A) Toxins
- (B) CO 2
- (C) liquid
- (D) salt
- (E) Lead
- (F) Carbon
- (G) Acids
- (H) sulfur*
Line 1: *Some arthropods have special excretory structures. Insects are the largest group of arthropods. Some insects have special excrectory structures.*
*(H)*
Line 2: *What can have special excretory systems?
Options:
- (A) feces
- (B) barnacles
- (C) animals
- (D) cacti
- (E) fungi
- (F) wings
- (G) soil
- (H) insects*
Logic of a solution: *Active immunity results when an immune response to a pathogen produces memory cells. Mechanisms by which intracellular pathogens evade activation of the cell mediated immune response. Active immunity results when intracellular pathogens evade activation of the cell.*
*(G)*
The original question: *What results when intracellular pathogens evade activation of the cell?
Options:
- (A) resistance
- (B) Leptospirosis
- (C) major threat to health
- (D) Allergies
- (E) hospitalization
- (F) Localized damage
- (G) active immunity
- (H) massive damage*
Line 1: *Humans have collected and grown mushrooms for food for thousands of years. Yeast and mushrooms are types of fungus. Humans have collected and grown types of fungus for food for thousands of years.*
*(F)*
Line 2: *What have humans collected and grown for thousands of years?
Options:
- (A) Organic compounds
- (B) types of coral
- (C) types of ferns
- (D) bioaerosols
- (E) Most plants
- (F) types of fungus
- (G) types of pine trees
- (H) peachleaf willow*
Line 1: *Most mollusks have shells. Mollusks are invertebrates and are no exception. Some invertebrates have shells.*
*(H)*
Line 2:
*Some invertebrates may have which feature?
Options:
- (A) invertebrate
- (B) fat
- (C) gills
- (D) exception
- (E) three
- (F) mollusk
- (G) complex
- (H) shell*