A heart with three chambers, one atrium, and two ventricles is shared by _____
a. reptiles and mammals
b. reptiles and amphibians
c. amphibians and mammals
d. birds and mammals
e. birds and reptiles
ANSWER: b
You might also like to view...
When X rays penetrate cells, electrons are ejected from atoms of molecules. Stable molecules can be transformed into which two types of hazardous materials?
What will be an ideal response?
Epiphytes have ____ that anchor the plants to the surface on which they grow
a. pneumatophores b. buttress roots c. prop roots d. aerial roots e. root hairs
The mechanism of action of many common medications involves interfering with the normal pathways that cells use to respond to hormone signals. Which of the following best describes a drug interaction that directly interferes with a signal transduction pathway?
(A) A medication causes the cell to absorb more of a particular mineral, eventually poisoning the cell. (B) A medication enters the target cell and inhibits an enzyme that normally synthesizes a second messenger. (C) A medication enters the target cell's nucleus and acts as a mutagen. (D) A medication interrupts the transcription of ribosomal RNA genes.
Global warming is predicted to have an effect on all of the following except
A. sea levels. B. agriculture. C. rainfall patterns. D. human reproduction.