Ques:[What causes human disease?
Options:
- (A) HPV
- (B) UV
- (C) minerals
- (D) Tamiflu
- (E) mold
- (F) HIV
- (G) human growth
- (H) CFCs]
Ans:[Viruses cause many human diseases. Examples include influenza, rabies, HIV, and Herpes viruses. Influenza causes human disease.
(F)]

Ques:[What has radial symmetry?
Options:
- (A) peachleaf willow
- (B) sea urchins
- (C) humans
- (D) gastropod shells
- (E) A Greek letter
- (F) asymmetry
- (G) dogs
- (H) Most plants]
Ans:[Adult echinoderms have radial symmetry. Sea urchins are echinoderms, in the same family as starfish. Adult sea urchins have radial symmetry.
(B)]

Ques:[Dilation occurs when part of a cell that a what does not have relaxes.
Options:
- (A) breathing
- (B) organ
- (C) the eyes
- (D) abrasion
- (E) complex
- (F) animal
- (G) nerves
- (H) retina]
Ans:[Dilation occurs when cell walls relax. Animals have no cell walls. Dilation occurs when part of a cell that an animal does not have relaxes.
(F)]

Ques:[What group of animals are a tetrapod vertebrate that produce amniotic eggs?
Options:
- (A) class Reptilia
- (B) warm-blooded
- (C) more abundant
- (D) graptolites
- (E) animals
- (F) insects
- (G) mammals
- (H) barnacles]
Ans:
[Reptiles are a class of tetrapod vertebrates that produce amniotic eggs. Reptilia contains over 7800 entries on numerous species of reptiles. Animals in the class Reptilia are a class of tetrapod vertebrates that produce amniotic eggs.
(A)]