How, and in what group(s), did the advent of lungs change the pattern of circulation?
What will be an ideal response?
Amphibians and reptiles have two circulations as the result of evolving lungs: they have pulmonary circulation that delivers blood to the lungs, and systemic circulation that delivers blood to the remainder of the body.
You might also like to view...
In an experimental situation, a student researcher inserts an mRNA molecule into a eukaryotic cell after she has removed its cap and poly-A tail. Which of the following would you expect her to find?
A) The mRNA is quickly converted into a ribosomal subunit. B) The cell adds a new poly-A tail to the mRNA. C) The mRNA attaches to a ribosome and is translated, but more slowly. D) The molecule is digested by enzymes because it is not protected at the end.
Which group of bacteria uses oxygen as a terminal electron acceptor and grows well in ambient air?
a. Aerobes b. Anaerobes c. Capnophiles d. Microaerophiles
If two copies of a gene are identical alleles, the condition is referred to as
a. homozygous. b. heterozygous. c. hybrid. d. dominant. e. codominant.
Red-green color blindness is an X-linked recessive trait. Two normal-vision parents have a color-blind son. Indicate
the genotype and phenotype of each parent and the son. What will be an ideal response?