Worldwide, how many people currently have
AIDS?
a. 33 thousand
b. 3 million
c. 33 million
d. 33 billion
e. 3 thousand
C
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Unipotent cells may differentiate into all other cell types of the body
Indicate whether the statement is true or false
What does PTH stimulate when blood calcium levels are low?
a. excretion of calcium from the kidneys b. excretion of calcium from the intestines c. osteoclasts d. osteoblasts
Four of the five answers below are principal characteristics of all chordates. Select the exception
a. post-anal tail b. bony vertebra c. notochord d. dorsal nerve cord e. pharyngeal gill slits
Somatic genome mosaicism is best described as ________
A) differences in genome sequence between cells of an organism due to errors in sequencing B) differences in proteins expressed between cells of an organism C) differences in gen location in the genome D) differences in genome sequence between cells of an organism due to errors incurred during division