Cadherins (select all correct choices):
A. are cell adhesion molecules found in
cellular junctions at cell surfaces.
B. are calcium-dependent proteins involved in
attachment of cells to neighboring cells.
C. are calcium-dependent proteins involved in
attachment of cells to the extracellular matrix.
D. are highly diverse, and each type can only
bind to a complementary cadherin type.
A,B
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Bryophytes, like ferns and certain other tracheophyte plants, require
A. air to reproduce sexually. B. water to reproduce sexually. C. soil to reproduce sexually. D. shade to reproduce sexually. E. sunlight to reproduce sexually.
All of the following are reabsorbed by the nephron EXCEPT
A. Na+ and Cl- ions. B. H+ ions. C. amino acids. D. glucose. E. vitamins. F. water.
When considering transfusions or transplants, it is more difficult to match blood than to match tissue types because blood cells have more self markers on their surface
Indicate whether the statement is true or false
Which of the following statements about toxoplasmosis is FALSE?
A) It is caused by a protozoan. B) The reservoir is cats. C) It is transmitted by the gastrointestinal route. D) It is a severe illness in adults. E) It can be congenital.