Jess has A- blood type, has never received a blood transfusion, and never been pregnant. Antibodies against what blood antigens could be present in Jess' blood?
A) O and Rh antigens
B) B antigens
C) A antigens
D) B and Rh antigens
E) O antigens
B
Bloom's Taxonomy: Comprehension
Section: Hypersensitivities
Learning Outcome: 18.6
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Answer the following statements true (T) or false (F)
1. In the evolution of plants, wood appeared before seeds. 2. Ginkgo trees and humans have similar chromosomal sex-determination systems. 3. The fig tree Ficus tremula produces unique inflorescences that are only accessible to a particular species of pollinating fig wasp Courtella wardi. The inflorescence provides a protected space for the fig wasp to lay eggs which then develop into the next generation of adult fig wasps. This relationship between the fig tree and the fig wasp is an example of coevolution. 4. In the fall, squirrels often harvest large numbers of acorns and bury some of them for future consumption. Over the winter, however, many of these acorns are forgotten by the squirrels and germinate in the spring, producing the next generation of oak trees. This relationship between the squirrel and oak tree is an example of a coevolved seed dispersal mechanism.
What is the economic importance of fungi? Name at least 10 products made utilizing fungi. What will be an ideal response?
The production of red blood cells is regulated by a feedback loop involving erythropoietin. In non-disease states, the production of red blood cells is equal to the destruction of red blood cells, thus maintaining sufficient red blood cells to deliver adequate oxygen to the body's tissues. However, when the number of red blood cells decrease and oxygen levels are low, erythropoietin is produced by the liver and kidneys to increase the production of red blood cells. Is this a positive or negative feedback loop? Explain your answer.
What will be an ideal response?
Which factor is NOT responsible for the increase in the size of human population?
A. Clothing B. Medicine C. Sanitation D. Innovations in agriculture E. Increased total fertility rate