Logic of a solution: *Mammals generate heat mainly by keeping their metabolic rate high. And resting metabolic rate is a big contributor to calories burning. Mammals generate heat mainly by burning calories.*
*(E)*
The original question: *Mammals generate heat mainly by what?
Options:
- (A) hugging mammals
- (B) calorie counting
- (C) with their fur
- (D) energy of moving objects
- (E) burning calories
- (F) sweating
- (G) selling fur coats
- (H) flow of electrons*
Line 1: *Female gametophytes produce eggs inside the ovaries of flowers. Gametophytes are the parent of the baby fern. Female flower parents produce eggs inside the ovaries of flowers.*
*(G)*
Line 2: *What is produced by female flower parents in the ovaries?
Options:
- (A) seeds
- (B) pollen
- (C) sugar
- (D) abcess
- (E) honey
- (F) H 2 O
- (G) eggs
- (H) nectar*
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: *Viruses cannot reproduce by themselves. Influenza is a disease caused by viruses. Influenza is a disease that cannot reproduce by itself.*
*(D)*
Line 2: *Which of these diseases cannot reproduce by itself?
Options:
- (A) fever
- (B) Leptospirosis
- (C) animals
- (D) influenza
- (E) bacteria
- (F) heat or cold
- (G) dangerous
- (H) anemia*
Logic of a solution: *Mammals have a layer of fat under the skin to help insulate the body. If it has hair it is a mammal. An organism with hair has a layer of fat under the skin to help insulate the body.*
*(A)*
The original question: *What does a hairy organism have under its skin to help insulate the body?
Options:
- (A) fat
- (B) hair
- (C) food
- (D) cell
- (E) nerves
- (F) coat
- (G) fur
- (H) marrow*
Logic of a solution: *Amphibians are the first true tetrapods, or vertebrates with four limbs. All vertebrates more advanced than fish have four limbs, each with up to five fingers or toes. Amphibians with four limbs are more advanced than fish.*
*(E)*
The original question:
*Amphibians with what are more advanced than fish?
Options:
- (A) four eyes
- (B) sensory neurons
- (C) rapid expansion
- (D) layers of fat
- (E) four limbs
- (F) kinetic energy
- (G) tails
- (H) many limbs*