If a cell is like a house, which one of the following is most similar to the way that a steroid hormone works?
A) A postal worker leaves mail for you at your front door.
B) A visitor to your home knocks on your front door.
C) Radio signals are received by a stereo in your bedroom.
D) You walk outside of your home to get a better signal on your cell phone.
C
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Erythropoietin from the kidneys stimulates production of ________ .
a. glucagon b. insulin c. gastrin d. T cells e. red blood cells
The most abundant protein in mammals is collagen. This strong, ropelike molecule is particularly abundant in which tissue?
A. heart muscle B. spinal cord C. ligaments D. skeletal muscle
The teeth designated by the letter “A” in the above
figure are called a. canines. b. premolars. c. incisors. d. molars. e. none of these.
A growth pattern where a low-density population grows slowly, goes through a rapid growth phase
and then levels off when the carrying capacity is reached is called a. logistic growth. b. exponential growth. c. linear growth. d. ascending growth. e. capacity growth.