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Use this information for the next three questions. Researchers studying a small milkweed population note that some plants produce a toxin and other plants do not. The dominant allele (T) codes for an enzyme that makes the toxin, and the recessive allele (t) codes for a nonfunctional enzyme that cannot produce the toxin. Heterozygotes produce an intermediate amount of toxin. The frequency of the TT genotype is 0.56.   What would be the expected frequency of the heterozygotes?

A 3-year-old child is unrespnsive. not breathing, and pulseless.  High-quality CPR is in progress.  A cardiac monitor is applied, and the rhythm below is noted. ekg vt.png  What is the next appropriate intervention?

Determine the type of sampling used: A student interviews classmates in his algebra class to determine how many pairs of jeans a student owns, on average.

In your words, what does the mean of a data represent? Give me a practical example/use when one would use the mean to describe a data set.

A 2-week-old infant presents with irritability and a history of poor feeding.  Blood pressure is 55/40 mm Hg.  What term describes this infant’s blood pressure?

“Enzyme Y” is most likely ________.

A 15-year-old boy presents with acute onset of severe respiratory distress, with retractions and an oxygen saturation of 85%.  His trachea is deviated to the right, and there are no breath sounds on the left.  His heart rate is 140/min., his blood pressure is 84/60 mm Hg, and his capillary refill time is 3 seconds.  What is the most appropriate intervention?

Which of the following is not part of the cell theory?

Use this information for the next five questions:   Scientists hypothesize that in order for DNA replication to occur the gene for a protein called Rb must be inhibited. Thus, they predicted that cellular levels of this protein would decrease during the early part of replication.  A fluorescent antibody was prepared as an indicator to detect the level of Rb in cells.  The table below describes the various samples tested and the amount of fluorescence measured in each after incubation with the antibody. Fluorescence Intensity Group Condition mean standard deviation n A Cells in early G1 phase 27.3 4.8 9 B Cells in early S phase 17.5 5.6 9 C Cells in early G2 phase 29.8 4.1 9 D Cells injected with purified Rb 55.2 9.2 9  

A 3-year-old child was recently diagnosed with leukemia and has been treated with chemotherapy.  The child presents with lethargy and a high fever.  Heart rate is 195/min, respiratory rate is 36/min., blood pressure 85/40 mm Hg and the capillary refill time is less tha 2 seconds.  What is the child’s most likely condition?