The right atrium
A. is the location of the pacemaker cells of a normal heart.
B. prevents blood flow from the right ventricle to the right atrium.
C. prevents blood flow from the left ventricle to the left atrium.
D. prevents blood flow from the pulmonary artery to the right ventricle.
E. prevents blood flow from the aorta to the left ventricle.
Answer: A. is the location of the pacemaker cells of a normal heart.
You might also like to view...
Both gram-positive and gram-negative cells have outer membranes.
Answer the following statement true (T) or false (F)
Establishing a phylogeny for bacteria is more difficult than establishing a phylogeny for plants or animals." This statement is:
A. correct because it is difficult to obtain enough morphological data from bacteria. B. correct because bacteria can engage in lateral gene transfer. C. incorrect because bacteria are so small. D. correct because of the quick generation time of bacteria.
The sequencing method that cuts DNA segments into fragments, arranges those fragments based on overlapping nucleotide sequences, and then clones these fragments is called
A. RFLP sequencing. B. shotgun sequencing. C. clone-by-clone sequencing. D. consensus sequencing.
Members of a guild are metabolically related to each other.
Answer the following statement true (T) or false (F)