What forces filtratin at the glomerular capsule?
A) The changing size of the blood vessel
B) The pH difference across the filtration membrane
C) The absence of a brush boarder
D) The abundance of surface area
Ans: A) The changing size of the blood vessel
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Which repair mechanism utilizes MutL, MutH, and MutS proteins in E. coli?
A. Recombinational repair B. Direct repair C. Base excision repair D. Mismatch repair E. Nucleotide excision repair F. Nonhomologous end joining (NHEJ)
A diffuse nerve net would be found in which of the following animals?
A) Insect B) Jellyfish C) Flatworm D) Human E) Octopus
What is hemoglobin?
A. A reliable source of oxygen B. A protein that is colorless when deoxygenated C. An iron-containing respiratory protein D. A protein found in invertebrates such as crabs and octopus E. A by-product of gas exchange
The archenteron develops into
A) the mesoderm. B) the blastocoel. C) the endoderm. D) the placenta. E) the lumen of the digestive tract.