The demographic transition:
a. includes a decrease in the death rate followed by a decrease in the birth rate as a population becomes industrialized.
b. includes a decrease in the birth rate followed by a decrease in the death rate as a population becomes
industrialized.
Ans: a. includes a decrease in the death rate followed by a decrease in the birth rate as a population becomes industrialized.
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With respect to nitrogen utilization, relatively few bacteria can use NH3 whereas many more can make use of N2
Indicate whether the statement is true or false.
Cytogenetic is
A. A photographic representation of chromosome. B. The field of genetics that involves the microscopic examination of the chromosomes and cell division. C. The sorting process to divide one cell nucleus into two nuclei. D. The process in which the two nuclei are segregated into separate daughter cells' E. The process by which the haploid cells are produced from a cell that was originally diploid.
Oxygen-rich blood flows through the heart
A) by entering the right atrium and continuing through the aortic arch. B) via the left atrium and ventricle before entering the systemic circuit. C) on the left side of the heart following returning from the lungs via the pulmonary arteries. D) right to left. E) only through the coronary arteries.
In addition to peptidoglycan, the cell walls of gram-positive bacteria contain
a) mannan. b) teichoic acid. c) cellulose. d) chitin.