Endotherms have higher metabolic rates than do ectotherms and are therefore able to be active over a narrower range of environmental temperatures
A. true
B. false
B
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Which of the following choices is not an effect of cortisol?
a. controls sodium and water reabsorption in the kidneys b. signals skeletal muscles to degrade proteins c. induces liver cells to break down glycogen d. triggers adipose cells to degrade fats
Which tissue is composed of spindle-shaped contractile cells that are commonly found in the walls of tubular organs such as blood vessels?
a. squamous epithelium b. smooth muscle c. skeletal muscle d. cardiac muscle e. adipose tissue
The main weight-bearing bone in the lower extremities is known as the ________
A) fibula B) tibia C) pelvis D) femur
An atom with a neutral charge has
a. more neutrons making it more neutral. b. equal numbers of protons and electrons. c. more protons than it does electrons. d. the same number of protons and neutrons. e. equal numbers of neutrons and electrons.