Logic of a solution: *Mammals breathe with the help of a diaphragm. Common dolphins are mammals. Dolphins breathe with the help of a diaphragm.*
*(F)*
The original question: *What does a diaphragm help a dolphin do?
Options:
- (A) swimming
- (B) rest
- (C) stay warm
- (D) smell
- (E) see
- (F) breathe
- (G) eat
- (H) survive*
Line 1: *Plants use cellulose for their cell walls. Another important polysaccharide is cellulose. Plants use a polysaccharide for their cell walls.*
*(H)*
Line 2: *What do plants build their cell walls from?
Options:
- (A) By wind and rain
- (B) Deposition
- (C) Deposition.
- (D) algae
- (E) Chemical energy
- (F) plant wall
- (G) plant material
- (H) polysaccharides*
Logic of a solution: *Cells secrete acids and bases to maintain the proper pH for enzymes to work. Phosphatases are enzymes that remove phosphates from other enzymes. Cells secrete acids and bases to keep the proper pH for phosphatases to work properly.*
*(H)*
The original question: *What is needed from cells for phosphatases to keep the proper ph?
Options:
- (A) plasma
- (B) secretion of bases only
- (C) secretion of proteins
- (D) metabolic reaction
- (E) it helps plants in growing
- (F) Positive charges
- (G) Transfers energy
- (H) secretion of acids and bases*
Line 1: *Some viruses live in a dormant state inside the body. After an episode of chickenpox, the virus becomes dormant in the body. Chicken pox can live in an inactive state.*
*(E)*
Line 2: *What is an example of an entity that can live on in a completely inactive state?
Options:
- (A) an object
- (B) sloths
- (C) hibernating bears
- (D) Conifers
- (E) chickenpox
- (F) barnacles
- (G) a fish
- (H) mammals*
Logic of a solution: *Adult echinoderms have radial symmetry. All animals with radial symmetry live in water. All adult echinoderms live in water.*
*(E)*
The original question: *Where do all adult echinoderms live?
Options:
- (A) soil
- (B) desert
- (C) freshwater
- (D) fossils
- (E) water
- (F) Earth
- (G) small
- (H) aquariums*
Logic of a solution: *Annelids are worms such as the familiar earthworm. Annelids have bodies that are segmented. The familiar earthworm has a segmented body.*
*(B)*
The original question:
*Earthworm bodies are:
Options:
- (A) fertile
- (B) segmented
- (C) migrate
- (D) allow growth
- (E) revolving
- (F) more abundant
- (G) Loose
- (H) Absorb light*