What kind of animal would be an endothermic tetrapod vertebrate?
Options:
- (A) animals in the class aves
- (B) barks and snarls
- (C) passenger pigeons
- (D) Something that is self-aware
- (E) Generating heat
- (F) retaining heat
- (G) absorb light energy
- (H) it keeps an organism warm
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Let's think first: Birds are endothermic tetrapod vertebrates. Class Aves is for the birds, literally. Animals in the class aves are endothermic tetrapod vertebrates.... So the answer is [(A)]


What causes h20 to expand when frozen?
Options:
- (A) evaporation
- (B) vaporization
- (C) hydrogen bonds
- (D) helium bonds
- (E) mysterious forces
- (F) nitrogen bonds
- (G) Physical weathering
- (H) precipitation
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Let's think first: Hydrogen bonds cause water to expand when it freezes. Water is everywhere H20. Hydrogen bonds cause H20 to expand when it freezes.... So the answer is [(C)]


What is the primary item inside a virus?
Options:
- (A) Chemical energy
- (B) particles
- (C) genetic material
- (D) cytoplasm
- (E) electromagnetic energy
- (F) bioaerosols
- (G) food and shelter
- (H) bacteria
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Let's think first: Viruses contain DNA but not much else. DNA DNA DNA is a person's genetic fingerprint. Viruses contain genetic material and not much else.... So the answer is [(C)]


Temperature and pressure receptors in most animals are located:
Options:
- (A) Veins and arteries.
- (B) in one limb each
- (C) in the same organ
- (D) an organism's body
- (E) it keeps an organism warm
- (F) in two different organs
- (G) in plants
- (H) frontal zones
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Let's think first: Pressure receptors are found mainly in the skin. Temperature sensors in vertebrates are located in the skin and in the hypothalamus. Temperature and pressure sensors are located in the same organ in most animals.... So the answer is [(C)]


What often precedes mating?
Options:
- (A) A Greek letter
- (B) competition
- (C) friendship
- (D) birth of a child
- (E) death
- (F) Chemical energy
- (G) pregnancy
- (H) sweating
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Let's think first: Mating is generally preceded by courtship. Friendship usually precedes courtship, and courtship, marriage. Friendship often comes before mating.... So the answer is [(C)]


What are the units of basic information on chromosomes?
Options:
- (A) colors
- (B) heriditary
- (C) sensory neurons
- (D) Most plants
- (E) Joules
- (F) pollen
- (G) A Greek letter
- (H) photons
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Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Let's think first: Genes that are located on the same chromosome are called linked genes. Gene A gene is the basic unit of heriditary information. Chromosomes contain the basic units of heriditary information.... So the answer is [(B)]