1) Groups of similar cells working together to perform specific jobs are a) cells b) atoms c) molecules d) tissues e) organs f) organ systems 2) What protects all internal and external body surfaces? a) tissue b) skin c) epithelial tissue d) organs e) stomach f) hair 3) What connects one part of the body with another and separates one group of cells from another. a) epithelial tissue b) nerve tissue c) connective tissue d) supportive tissue e) muscle tissue 4) These are groups of specialized cells with the ability to contract and produce movement a) skeletal tissue b) muscle tissue c) connective tissue d) cells e) organs 5) A type of tissue that transmits messages throughout the body. a) nerve tissue b) connective tissue c) supportive tissue d) muscular tissue e) skeletal tissue 6) What is the basic unit of life? a) atom b) organ c) tissue d) system e) nucleus f) cell 7) A group of tissues that work together to perform a certain task is an a) cell b) organ c) tissue d) skin e) brain 8) And a group of organs working together to perform a series of related functions is an a) cell b) tissue c) organ d) system e) human body f) organ system 9) The _____________________________ helps control body functions through the secretion of hormones. a) epithelial system b) endocrine system c) nerve tissue d) hormones e) glands 10) It is a chemical substance released by the gland. a) soda drinks b) hormones c) glands

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