An urban environment may impact all of the following changes to a forest EXCEPT
a. amount of rainfall.
b. rate of photosynthesis.
c. rate of cellular respiration.
d. seedling size.
e. stomatal densities.
A
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An ELISA test to detect antibodies to the Rubella virus would include/use all of the following EXCEPT
A. the patient serum specimen. B. microtiter wells coated with rubella antigen. C. enzyme-labeled rabbit antihuman IgG antibodies. D. a chromogenic enzyme substrate. E. There are no exceptions here. Each of these items would be used.
The hormone that induces contractions that lead to birth is ____
A. estrogen D. melatonin B. prostaglandin E. progesterone C. oxytocin
Water and dissolved mineral are transported laterally from the secondary ____ to the secondary ____
a. phloem; xylem b. epidermis; peridem c. vascular cambium; cork cambium d. periderm; epidermis e. xylem; phloem
Which of these characteristics added most to vertebrate success in relatively dry environments?
A) the shelled, amniotic egg B) the ability to maintain a constant body temperature C) two pairs of appendages D) a four-chambered heart