Celiac disease is an autoimmune disorder which destroys the microvilli of the small intestine. Vitamin B12 can be absorbed by passive diffusion across the microvilli of the small intestine. Consider a patient who has had 10% of their microvilli destroyed. If the concentration of vitamin B is 0.6 pg/ml inside the lumen of the small intestine and 0.3 pg/ml on the inside of an epithelial cell, how
is the diffusion rate of vitamin B altered in this patient?
A. It is reduced by 10%.
B. It is reduced by .003%.
C. It is increased by 10%.
D. It is reduced by .3%.
E. It is increased by .3%.
A. It is reduced by 10%.
You might also like to view...
The observable outward manifestation of the genes of an individual is referred to as its
A. blueprint. B. genotype. C. phenotype. D. genetic map. E. pedigree.
Imagine a scenario in which a common population of animals is separated into two groups by a natural event. Over time, you might expect the two populations to become ______ genetically related. This process is known as ___________ speciation
A. less; sympatric B. more; sympatric C. less; allopatric D. more; allopatric
Which element is considered an essential micronutrient for plants?
a. phosphorus b. silver c. molybdenum d. carbon e. lead
Which classification level contains the greatest number of species?
a. class b. order c. family d. domain e. phylum