A naturalist is studying morphological patterns that are shared between species in two temperate rainforests that are located on different continents. This would be an example of which field of study?
a. biomorphology
b. comparative ecology
c. biological geology
d. comparative geography
e. biogeography
e
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Although lacking a TCA cycle and a respiratory chain, ________ can divide with a generation time of eight to ten minutes when growing in a human host.
A. Staphylococcus aureus B. Streptococcus pyogenes C. Clostridium perfringens D. Helicobacter pylori
Which of the following statements is TRUE?
A. Interphase chromosomes are loosely compacted, overlapping, and intertwined with each other within the nucleus. B. Interphase chromosomes are loosely compacted and do not associate with histones until the cell is preparing to divide. C. Interphase chromosomes are also known as euchromatin. Condensed, metaphase chromosomes are also known as heterochromatin. D. Radial loop domains are formed due to interactions between 30 nm fibers and intermediate filaments. E. None of these are TRUE
A TATA box is seen in __________ cells and is the site where __________
a. bacterial; RNA polymerase binds b. eukaryotic; DNA ligase cleaves introns c. eukaryotic; RNA polymerase binds d. both bacterial and eukaryotic; transcription factors bind e. bacterial; a repressor protein binds
Which hypothesis suggests that organic molecules formed near Earth's surface in pools of water?
a. clay hypothesis b. iron-clay hypothesis c. organic broth hypothesis d. prebiotic soup hypothesis e. iron-sulfur world hypothesis