Which of the following are characteristics of cancer cells?
A. promote angiogenesis
B. genetically unstable
C. exhibit metastasis
D. escape signals for death
Answer:
A. promote angiogenesis
B. genetically unstable
C. exhibit metastasis
D. escape signals for death
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The leaves of ferns are called
a. epiphytes. b. stems. c. fronds. d. bracts. e. rhizomes
A population of birch trees is present on the side of a mountain and is preyed upon by beetles that burrow into bark. Which tree would be the most fit?
A) a tree that grows to be the tallest B) a tree that has thicker bark C) a tree with more active photosynthetic enzymes D) a tree that has thick, strong roots
What is recombinant DNA?
A) A segment of DNA containing sequences from two different sources B) DNA that comes from plasmids C) DNA that can no longer replicate D) DNA that is circular
Extant microorganisms are organisms from the fossil record that are no longer present on Earth today.
Answer the following statement true (T) or false (F)