Logic of a solution: *Head hair is especially important in preventing heat loss from the body. Basically, heat is energy. Head hair is especially important in preventing energy loss from the body.*
*(C)*
The original question: *What does head hair prevent the loss of?
Options:
- (A) matter
- (B) chemicals
- (C) energy
- (D) sunlight
- (E) Nutrients
- (F) warmth
- (G) humidity
- (H) sweating*
Line 1: *Chloroplasts contain the green pigment chlorophyll. Photosynthetic Pigments Photosynthetic Pigments Pigments are colorful compounds. Chloroplasts contain the green compound chlorophyll.*
*(H)*
Line 2: *What contains the green compound chlorophyll?
Options:
- (A) mitochondria
- (B) Most plants
- (C) vacuoles
- (D) color of leaves
- (E) cell walls
- (F) peachleaf willow
- (G) In their leaves
- (H) chloroplasts*
Logic of a solution: *Air pollution harms the respiratory and circulatory systems. Incinerated mercury pollutes the air. Incinerated mercury harms the respiratory and circulatory systems.*
*(D)*
The original question: *What harms the respiratory and circulatory systems?
Options:
- (A) Greenhouse gasses
- (B) burning coal
- (C) inoculation
- (D) incinerated mercury
- (E) fossil fuels
- (F) water vapor
- (G) Sulfur dioxide
- (H) air*
Line 1: *Vertebrate chordates have a backbone. Invertebrates have no vertebrae or backbone. Vertebrate chordates have a vertebrae.*
*(C)*
Line 2: *What kind of animal is classified as having a vertebrae?
Options:
- (A) it keeps an organism warm
- (B) invertebrate
- (C) vertebrate chordate
- (D) gastropod shells
- (E) the body's largest organ
- (F) remains of prehistoric life
- (G) hard boned animals
- (H) roundworm*
Logic of a solution: *Roundworms reproduce sexually. Sexual reproduction involves karyogamy and meiosis. Roundworms reproduce using karyogamy and meiosis.*
*(A)*
The original question: *Roundworms reproduce using meiosis and what?
Options:
- (A) karyogamy
- (B) pollen
- (C) survive
- (D) reproduce
- (E) allow growth
- (F) Energy
- (G) Leptospirosis
- (H) seeds*
Logic of a solution: *Glucose is used for energy by the cells of most organisms. Blood Sugar Glucose is sugar. Sugar is used for energy for the cells of most organisms.*
*(A)*
The original question:
*What is used for energy in most cells?
Options:
- (A) sugar
- (B) sodium
- (C) muscle
- (D) maples
- (E) calcium
- (F) food
- (G) silicon
- (H) Energy*