Embryonic stem cells derived from blastocysts are pluripotent, and therefore useful in stem cell research because they ________
a. are viable under a wide range of laboratory conditions
b. do not replicate and are therefore stable long-term
c. can form all cells, tissues, and organs of the human body
d. are specialized and therefore arrested in G0
e. function to replace damaged or diseased body parts in adults
c
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True or false: The benefit of asymmetric meiotic division during oogenesis is that it allows most of the cytoplasm to be retained in a single cell
A. true B. false
The lacA gene found within the lac operon encodes for galactosidase transacetylase. This enzyme attaches a(n) ________ group to lactose and lactose analogs.
A. amino B. hydroxyl C. carbonyl D. acetyl E. carboxyl
Kidneys filter water and all solutes except ___
from the blood.
a. urea b. potasium c. proteins d. chloride ions e. monosaccharides
What structures are divided during cytokinesis?
A. cytoplasm and organelles B. cell membrane and chromatin C. nuclei D. cytoplasm and chromosomes E. none of these