Line 1: *Running water is better able to dissolve oxygen and nutrients than standing water. Large, warm rivers hold populations but few occur in cold running water. Rivers can better dissolve oxygen and nutrients than lakes.*
*(F)*
Line 2: *What can better dissolve nutrients and oxygen?
Options:
- (A) lakes
- (B) SO2
- (C) Raft
- (D) a solute
- (E) puddles
- (F) rivers
- (G) currents
- (H) lochs*

Logic of a solution: *Ribosomes are structures in the cytoplasm where proteins are made. Outside the nucleus is cytoplasm. Ribosomes are structures outside the nucleus where proteins are made.*
*(A)*
The original question: *Where in a cell are ribosomes located?
Options:
- (A) outside the nucleus
- (B) Most plants
- (C) solid, liquid, gas
- (D) allow growth
- (E) Veins and arteries.
- (F) Earth orbiting the Sun
- (G) Chlorophyll
- (H) the body's largest organ*

Line 1: *Active immunity results when an immune response to a pathogen produces memory cells. Pathogens are germs that cause disease. Active immunity results when an immune response to a germ produces memory cells.*
*(H)*
Line 2: *Active immunity is when an immune response occurs after a germ produces what?
Options:
- (A) harmful substances
- (B) bioaerosols
- (C) rapid expansion
- (D) Allergies
- (E) anemia
- (F) it needs them
- (G) Chemical energy
- (H) memory cells*

Logic of a solution: *Arthropods have a life cycle with sexual reproduction. Insects are the largest group of arthropods. Insects have a life cycle with sexual reproduction.*
*(B)*
The original question: *What type of creatures have sexual reproduction as part of their life cycle?
Options:
- (A) plants
- (B) insects
- (C) proteins
- (D) ducks
- (E) animals
- (F) gametes
- (G) prions
- (H) fungi*

Line 1: *Most reptiles have good eyesight and a keen sense of smell. Olfaction is the sense of smell and gustation is the sense of taste. Most reptiles have good olfaction.*
*(B)*
Line 2: *What is one attribute of most reptiles?
Options:
- (A) aerobic capacity
- (B) good olfaction
- (C) a cuticle
- (D) warm-blooded
- (E) graptolites
- (F) an organism's body
- (G) permineralization
- (H) stamina*

Line 1: *Running water is better able to dissolve oxygen and nutrients than standing water. Large, warm rivers hold populations but few occur in cold running water. Oxygen and nutrients dissolve easily in rivers.*
*(C)*
Line 2:
*Rivers easily dissolve nutrients and:
Options:
- (A) bacteria
- (B) chemicals
- (C) oxygen
- (D) sodium
- (E) vitamin C
- (F) glucose
- (G) a solute
- (H) a hazard*