Which of the following is NOT a hallmark of cancer?
A. Cell division in the absence of growth
signals.
B. Resistance to signals that slow cell division
or promote death.
C. Metastasis, which allows invasion of local
tissues.
D. Ability to stimulate growth of blood vessels
to provide nutrients to the rapidly growing
tumor.
E. All of these choices are hallmarks of
cancer.
E
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Which technique would be used to estimate the concentration of naturally occurring Escherichia coli in a wastewater sample?
A) agar dilution tube method B) laser tweezers method C) most probable number (MPN) method D) cell tagging using GFP method
If 10 million people enter a drawing, what is each person’s probability of winning?
a. 10% b. 1% c. 0.1% d. 0.001% e. 0.00001%
The first amino acid in a growing polypeptide chain is _____
a. methionine b. valine c. lysine d. phenylalanine e. glycine
Mendel verified true-breeding pea plants for certain traits before undertaking his experiments. The term "true-breeding"
refers to: a. genetically pure lines. b. organisms that have a high rate of reproduction. c. organisms that will produce identical copies of themselves upon reproduction. d. organisms that are heterozygous for a given trait. e. organisms that are homozygous for all possible traits.