In which one of the following ways are antiangiogenic drugs used in the treatment of cancer?
A) These drugs stop the replication of DNA, so cancer cells cannot reproduce.
B) These drugs stop the growth of blood vessels into the tumor, so the cells "starve" to death.
C) These drugs stop metastasis.
D) These drugs stimulate the immune system.
E) These drugs stimulate the production of free radicals, which kill cancer cells.
B
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Which of the following is NOT possible for
incomplete flowers?
a. self-pollination b. attract pollinators c. form seeds d. form fruits e. all of these are possible for incomplete flowers
What are some of the benefits of using genetically modified crops?
What will be an ideal response?
Water molecules are cohesive because they
A) form hydrogen bonds. B) stick to other polar molecules. C) make up 60% to 90% of an organism's body weight. D) contain protons. E) are repelled by nonpolar molecules.
All of the following are correct about Type O blood, except
A) Persons with this type of blood are considered universal donors. B) Persons with this type of blood have anti-A and anti-B antibodies in their plasma. C) This is the most common blood type among all racial groups in the U.S. D) Persons with this type of blood carry an O antigen on their RBC.