Answer the following question given this paragraph: Roundworms have a pseudocoelom and hydrostatic skeleton. Their body is covered with tough cuticle. Q: What is the body of a roundworm covered with? Choices: - thick scales - thin epidermis - slime - tough cuticle A:
tough cuticle

Answer the following question given this paragraph: Mollusks have ventral nerve cords. The tissue beneath the shell is called the mantle. The mantle cavity contains hemolymph. Figure 15.33 Which of the following statements about common features of chordates is true? a. The dorsal hollow nerve cord is part of the chordate central nervous system. In vertebrate fishes, the pharyngeal slits become the gills. Humans are not chordates because humans do not have a tail. Vertebrates do not have a notochord at any point in their development; instead, they have a vertebral column. Q: What is the tissue beneath a mollusks' shell called? Choices: - cartilage - skin - mucous - mantle A:
mantle

Answer the following question given this paragraph: Ebola is a rare and deadly disease caused by infection with a strain of Ebola virus. The 2014 Ebola epidemic is the largest in history, affecting multiple countries in West Africa, including Guinea, Sierra Leone and Liberia. Ebola is spread through direct contact with blood and body fluids of a person infected by and already showing symptoms of Ebola. Ebola is not spread through the air, water, food, or mosquitoes. See Ebola virus disease at http://www. who. int/mediacentre/factsheets/fs103/en/ for additional information. Q: Ebola is an example of a disease spread by what kind of infectious agent? Choices: - bacteria - colds - flus - virus A:
virus

Answer the following question given this paragraph: Q: What kind of enzyme is phosphofructokinase? Choices: - covalent - intracellular - orthosteric - allosteric A:
allosteric