Based on this figure, which of the following is the largest risk factor for cancer?

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


A

Biology & Microbiology

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Branches of a bronchus are known as ____

a. larynx b. bronchi c. bronchioles d. trachea e. pharynx

Biology & Microbiology

Kinases are enzymes that can phosphorylate (transfer phosphate groups onto) macromolecules such as proteins.  A particular kinase, Kinase 1 is known to promote cell division.  It promotes cell division by phosphorylating Protein X.  Phosphorylation of Protein X activates Protein X.  Once activated, Protein X stimulates the production of other proteins such as Protein Y and Z that directly promote cell division.  In order to function, Kinase 1 requires the presence of Metal A.  However, in the presence of Protein A, Kinase 1 is nonfunctional.  From the description, what is considered a cofactor of Kinase 1?

A. Protein A B. Protein X C. Protein Y D. Metal A E. Protein Z

Biology & Microbiology

Each of the following can contribute to proliferation of cancer cells except

A) anchorage-independent growth. B) inhibition of apoptosis. C) density-dependent inhibition of growth. D) tumor-suppressor inactivation. E) All can contribute to immortalization.

Biology & Microbiology

Members of which of the following are the major primary producers in the marine ecosystem?

A. yeasts B. sponges C. sporozoans D. Fishes E. Diatoms

Biology & Microbiology