Ans:
C. Autotroph
E. Heterotroph
C. Autotroph
E. Heterotroph
Select the terms that describe an organism's carbon source.
A. Lithotroph
B. Chemotroph
C. Autotroph
D. Organotroph
E. Heterotroph
Biology & Microbiology
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What region of a steroid is hydrophilic?
A) the methyl (-CH3) groups B) the terminal hydroxyl group C) the ring structures D) the long hydrocarbon chain
Biology & Microbiology
Certain traits will have been lost from the gene pool forever. Some may be obvious, like people with red hair or double jointed thumbs. Others will be less obvious, like the ability to process cholesterol or being allergic to peanuts. This loss of diversity in a reduced population is called ________.
A) gene flow B) genetic drift C) bottleneck effect D) founder effect
Biology & Microbiology
Under the "business as usual" model of climate change, will temperatures change uniformly across the globe?
Examine Figure 48.7 in your text and compare the projected change in temperature in central South America and central Africa at the equator (draw an imaginary line across the globe at its widest point and examine a spot in the middle of each continent along that line). Which of the following best describes the predicted changes? A. Central South America will warm by an average of 7–8 degrees; central Africa will warm by around 3–4 degrees. B. Central South America will warm by an average of more than 8 degrees; central Africa will warm by 1–2 degrees. C. Central South America will remain about the same; central Africa will warm by 7–8 degrees. D. Central South America will warm by 2–3 degrees; central Africa will not change. E. Both central South America and central Africa will warm by 4–5 degrees.
Biology & Microbiology
Which of the following is NOT true about conjugation in Archaea?
a. Some strains have plasmids that mediate conjugation between cells, similar to Bacteria. b. Some Archaea form specialized structures for genetic exchange between cells, which does not involve a fertility plasmid. c. Thermococcus produces nanotubes that allow for bidirectional DNA transfer. d. Conjugative plasmids in Archaea encode most of the same tra genes found in Bacteria, thus the mechanism of conjugation is similar.
Biology & Microbiology