One of the key factors in vertebrate colonization of many diverse environments is
A. the flexibility provided by selective reabsorption of different solutes.
B. not requiring a lot of water due to their closed systems.
C. the ability to eat foods with lots of water.
D. the ability to control water loss by controlling perspiration.
E. the ability to decrease metabolic needs.
A. the flexibility provided by selective reabsorption of different solutes.
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A key is placed into a keyhole then turned and the door opens. Which of the following components of cell signaling would best correspond to turning the key?
A. the hormone B. the receptor C. conformational change in the receptor once bound to the hormone D. signal transduction E. the cell response
What type of inheritance pattern does color blindness exhibit?
a. Autosomal recessive b. Autosomal dominant c. X-linked recessive
Which statement about intramembranous bone formation is true?
a. Growth in height is possible. b. Growth of skull bones is possible. c. Formation of blood cells is possible. d. Development of synovial joints for movement is possible. e. Production of lacunae with osteocytes occurs as a part of growth.
Which of the following represents a potential threat to biodiversity?
(a). People construct artificial reefs to support marine life. (b). Humans clear land for agriculture and housing. (c). Energy flows through an ecosystem, with much lost as heat. (d). Tropical rain forests and coral reefs are found where solar energy is the most abundant. (e). In a food chain, one population feeds on another.