When they ferment glucose, members of the genus Streptococcus produce lactic acid, but no gas.
Answer the following statement true (T) or false (F)
True
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When the nontemplate strand of a gene is transcribed into RNA, what is likely to result?
A) A complementary sRNA will bind to it and form a functional ribozyme with secondary structure. B) It will complementary bind to the gene sequence, form a hairpin loop, and transcriptionally repress the gene. C) The complementary mRNA also transcribed from the template strand will bind to it and halt its translation. D) A global regulator will identify this as a stress, respond by inducing ribonuclease production, and it will degraded.
In animal cells, microtubules grow from
A. the plasma membrane. B. the outer membrane of the nuclear envelope. C. centrosomes containing centrioles. D. dimerization centers located throughout the cytosol. E. the tips of the chromosomes.
Amy just gave birth by cesarean section to a beautiful baby girl. All through her pregnancy, her mammary glands enlarged to prepare for milk production
However, in the day or two following the birth of her baby, Amy cannot eject a drop of the milk that is so obviously present in her breasts. What hormone is probably missing? A) oxytocin B) estrogen C) prolactin D) progesterone
At the beginning of a research project on egg laying in seagulls, a researcher noted that the birds laid an average of 7-9 eggs per clutch. After studying the population for 15 generations, the researcher noted that the birds were now laying 3-4 eggs per clutch. What type of natural selection is occurring in the population of gulls?
A. directional B. stabilizing C. disruptive D. There is no selection occurring in this population.