Hematopoiesis occurs in different organs at different periods in development. Which of the following is the correct set of organs, in the correct order?
A. Liver - Spleen - Bone Marrow
B. Spleen - Liver - Bone Marrow
C. Liver - Yolk Sac - Spleen - Bone Marrow
D. Yolk Sac - Liver - Spleen - Bone Marrow
E. Yolk Sac - Spleen - Liver - Bone Marrow
Answer: D. Yolk Sac - Liver - Spleen - Bone Marrow
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When cysteine-tRNAcys is treated with nickel hydride, alanine-tRNAcys is the product. Alanine-tRNAcys will base pair with which codon?
[insert Figure TB17.1 here] A. UGC B. GCU C. AUG D. AGU
Arrange the following going from the earliest to the most recent according to the time they evolved
from a common ancestor. 1) New World monkeys 2) Orangutans 3) Humans 4) Gibbons 5) Gorillas a. 1, 4, 2, 5, 3 b. 1, 2, 4, 3, 5 c. 2, 1, 4, 5, 3 d. 2, 5, 4, 1, 3 e. 3, 5, 2, 4, 1
Why do things appear mainly black or white to us in low light?
A) Rods are more sensitive to light than are cones. B) Colored light does not strike the retina in low light. C) Only white light is available at night. D) Few action potentials are generated in low light. E) The diffused light of night does not fall on the fovea.
Septic shock, a systemic response including high fever and low blood pressure, is a response to _____
A) certain bacterial infections B) specific forms of viruses C) the presence of natural killer cells D) increased production of neutrophils