All organisms are mostly the same in
a. how their proteins catalyze chemical reactions
b. the size of their genes
c. the proteins they make on their ribosomes
d. the molecular biology of their genes
Ans: d. the molecular biology of their genes
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Which of the following correctly orders the sequence in which genes controlling the development of the anterior-posterior axis of Drosophila larvae are expressed?
A. maternal-effect genes, gap genes, pairrule genes, segment-polarity genes B. maternal-effect genes, gap genes, segment-polarity genes, pair-rule genes C. pair-rule genes, maternal-effect genes, segment-polarity genes, gap genes D. maternal-effect genes, segment-polarity genes, pair-rule genes, gap genes E. gap genes, pair-rule genes, segmentpolarity genes, maternal-effect genes
Plants generally must use which of the following methods of phosphorus uptake?
A. nonenergy transport B. transport control by soil moisture C. passive uptake D. ATP proton cotransport E. None of these are true
Which of the following is true of transposable elements (TEs)?
a. Humans are one of a few organisms that do not contain TE DNA in their genomes. b. All TEs make a copy of themselves that inserts into a new location (copy and paste). c. All TEs are removed from one location before moving to another (cut and paste). d. TEs can be mutagenic. e. The site into which a TE inserts itself is homologous to the TE itself.
Normal cell division requires
A) inactivated proto-oncogenes and activated tumor suppressor genes. B) inactivated proto-oncogenes and inactivated tumor suppressor genes. C) activated proto-oncogenes and activated tumor suppressor genes. D) activated proto-oncogenes and inactivated tumor suppressor genes.