Extinction is an example of a ____

a. microevolutionary change
b. macroevolutionary change
c. natural selection
d. Mendelian genetics
e. "hopeful monster"


B

Biology & Microbiology

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All stem cells ____

a. are differentiated cells that proliferate indefinitely b. can differentiate into any cell type, but can only divide once after terminally differentiating c. have the ability to differentiate into all cell types d. are undifferentiated cells that proliferate indefinitely e. are undifferentiated cells that proliferate a finite number of times

Biology & Microbiology

In phototropism, shoots respond to ___ light

a. red b. green c. yellow d. blue e. ultra-violet

Biology & Microbiology

Consider the ADH reaction below, and answer the following question. ADH stands for alcohol dehydrogenase

In this reaction, ADH represents the ____.

a. enzyme b. reactant c. product d. activation energy e. trigger

Biology & Microbiology

During translation, attachment of a "start" codon to the small ribosomal subunit constitutes the beginning of the ________ stage

Fill in the blank(s) with correct word

Biology & Microbiology