Viral infections in humans spread via the circulatory system. Viral infections in plants spread from cell
to cell via:a.
endocytosis.
b. plasmodesmata.
c. infected seeds.
d. pili.
e. transformation.
B
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Herceptin is a drug that is given to treat certain breast cancers. However, it is most effective on tumors that are overexpressing HER2. Therefore, patients are tested for HER2 overexpression before being given Herceptin
This is an example of A. concordance. B. a haplotype. C. personalized medicine D. karyotyping.
Place the following hypothesized events of the
beginning of life in their correct order I organic polymers form II inorganic molecules form III DNA-based cells form IV organic monomers form V protocells in the RNA world form
a. I, III, V, IV, II d. IV, I, II, III, V b. II, I, IV, V, III e. II, I, IV, V, III c. II, IV, I, V, III
Answer the following statements true (T) or false (F)
1.Administering antivenom is a form of active immunity. 2.A vaccine could be prepared against a virus by allowing a patient to breathe viral coat proteins. This primary response would allow for a later, strong secondary immune response to the virus. 3.A baby receiving antibodies in breast milk from its mother is an example of passive immunity. 4.Innate immune responses involve antibodies. 5.A person is having an immune response to their flu vaccine by producing antibodies and memory cells. This is an example of passive immunity.
The level of ecological organization that incorporates abiotic factors is the
A) community. B) ecosystem. C) population. D) species. E) symbioses