Acute pulmonary edema:
A) commonly results from right-sided heart failure.
B) results in excess elimination of carbon dioxide.
C) is characterized by progressively worsening dyspnea.
D) impairs oxygen diffusion into the pulmonary capillaries
Answer: D) impairs oxygen diffusion into the pulmonary capillaries
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To answer questions 76–80 refer to the four items listed below
a. cDNA b. restriction enzyme c. reverse transcriptase d. gene library M 76. This is from a viral source and catalyzes reactions to construct DNA strands from mRNA. M 77. This is any DNA made from mRNA transcripts. M 78. This is a nuclease whose only function is to cut apart foreign DNA entering a cell. M 79. These are collections of host cells that house cloned DNA. M 80. This is an enzyme used to produce cDNA.
Which abiotic factor in the illustration would limit the carrying capacity of this environment for fresh water snails in the pond?
A) number of plants growing along the pond's banks B) population of birds C) concentration of algae in the upper levels of the pond D) amount of sunlight reaching the pond
________ pairs up with troponin proteins to form a complex that blocks muscle contractions
Fill in the blank(s) with correct word
Natural selection ________.
A) results in evolutionary adaptation B) is a very rare phenomenon C) does not affect allelic frequencies D) prepares organisms for future changes in the environment