symbiotic mycorrhizae
What will be an ideal response?
Soil microorganisms that are found on the periphery of roots and extensions into the cortex. They aid in the uptake of limiting nutrients.
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Nematodes and rotifers have a body cavity that is
(a) called a coelom. (b) called a pseudocoelom. (c) completely lined by tissues derived from mesoderm. (d) both a and c.
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%.
The founder effect occurs when a small group of individuals start a new population that is not genetically representative of the original population.
a. true b. false
The alveolates with two different nuclei are ciliates.
Answer the following statement true (T) or false (F)