When conducting a biological study or experiment in the field which equipment is the most important?
a) heat-resistant gloves
b) thermometer
c) field guide about wildflowers
d) first-aid kit
Ans: d) first-aid kit
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You want to engineer a eukaryotic gene into bacterial colony and have it expressed. What must be included in addition to the coding exons of the gene?
A) the introns B) eukaryotic polymerases C) a bacterial promoter sequence D) eukaryotic ribosomal subunits E) eukaryotic tRNAs
Spina bifida is one of the most common and most complex birth defects involving the ____ system
a. nervous b. circulatory c. respiratory d. digestive e. endocrine
Your textbook authors make the claim that "sympatric species with matching chromosome numbers are rare." Why is this?
A) because allopatric speciation is far more common B) because sympatric speciation has only been hypothesized but not documented C) because coexisting populations need a boundary to gene flow before divergence can occur, and differences in chromosome numbers provide this D) because macroevolution is just a theory
A(n) ________ is a complex community of various types of microbes that adhere to surfaces.
A. aggregate B. colony C. CFU D. biofilm E. inoculum