Habitats with the most species in greatest
danger of extinction are called
a. ecoregions.
b. indicator species.
c. riparian zones.
d. hot spots.
e. conservation islands
D
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A Punnett square displays
A) members of a family and their phenotypes. B) paired chromosomes in size order. C) DNA sequences and the proteins they encode. D) the probabilities of how alleles combine in offsprings.
ACTH (adrenocorticotropin hormone)ACTH (adrenocorticotropin hormone)
a. is secreted by the posterior pituitary. b. has target cells in the autonomic nervous system. c. has target cells in the adrenal glands. d. has target cells in the adrenal medulla. e. initiates the autoimmune response
If two individuals both heterozygous for the
same genes (e.g., AaBb) mate and have offspring, how many different phenotypes will there be?
a. 1 b. 2 c. 3 d. 4 e. 5
What statement is an application of the first law of thermodynamics?
a. The level of entropy increases as time passes. b. Living organisms represent an exception to the laws of energy. c. The quantity of energy does not increase or decrease in the universe. d. Fungi and plants do not make their own energy but derive it from somewhere else. e. The amount of energy found in the compounds on one side of an equation is equal to that on the other side.