Organisms that have their optimum growth pH between 0.0 and 5.5 are called ________.
Fill in the blank(s) with the appropriate word(s).
acidophiles
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Which group of terms refers to the microsporophyll, the male portion of a flower?
(a) ovary, stamens, pistil. (b) stigma, style, ovary. (c) anther, stamen, filament. (d) megasporangium, microsporangium, ovule.
One of the direct products of deamination is urea
____________________ Indicate whether the statement is true or false.
Explain what radioisotopes are, and describe how they can be used to monitor the uptake of a specific biochemical by a microbial culture.
What will be an ideal response?
Which of the following is not a general mechanism that cells use to maintain stable patterns of gene expression as cells divide?
(a) a positive feedback loop, mediated by a transcriptional regulator that activates transcription of its own gene in addition to other cell-type-specific genes (b) faithful propagation of condensed chromatin structures as cells divide (c) inheritance of DNA methylation patterns when cells divide (d) proper segregation of housekeeping proteins when cells divide