To make copies of specific DNA sequences in the lab, scienti…

To make copies of specific DNA sequences in the lab, scientists use polymerase chain reaction (PCR). PCR mimics DNA replication in some ways but not in how the two strands are pulled apart. During PCR, DNA is “unzipped” by heating the molecule and breaking the hydrogen bonds that connect the two strands. How are the two strands of DNA unzipped during DNA replication in our cells?

Your 8 month-old infant daughter develops a body temperature…

Your 8 month-old infant daughter develops a body temperature of 40o C.  She won’t nurse or take any formula and is cranky and restless. Her last two diaper checks (over the last 2 hours) have had very little urine. Your pediatrician is concerned and orders a dose of Tylenol of 5.0 mg per kg of body weight.  Your infant weighs 35 pounds. Tylenol infant drops are supplied as 80 mg/ .8 ml.  Answer the following questions. Is your infant’s body temperature normal?  What is the issue? (2pts.) Two illnesses that can occur from elevated body temperatures are heat exhaustion and heat stroke. How are they different? (2 points) Dehydration can occur quickly in infants.  List and describe 2 functions of water in our body. (2 points) List one sign and one symptom of dehydration (specify which is which). (2 points) How many ml of Tylenol should you give your daughter? (4 points)

In December 2023, the U.S. Food and Drug Administration appr…

In December 2023, the U.S. Food and Drug Administration approved the first CRISPR-Cas9 treatment for sickle cell disease. Doctors remove blood stem cells from a patient, use CRISPR-Cas9 to edit a gene in those cells so they produce fetal hemoglobin (a form of hemoglobin that does not cause sickling), and then return the edited cells to the same patient. Genetic technology used to treat a disease in an individual is known as ________.

Porphyria is caused by an autosomal recessive allele. A woma…

Porphyria is caused by an autosomal recessive allele. A woman who does not have porphyria has a child with porphyria, but she is uncertain who the father is. One of the possible fathers has porphyria. The other possible father does not have the disease. Based on this information, the woman can identify which of these two men is her child’s father with 100% certainty. True or false?

Asthma is commonly treated with an inhaled corticosteroid (I…

Asthma is commonly treated with an inhaled corticosteroid (ICS) and long-acting β2-agonist (LABA), whereas COPD is often treated with a long-acting β2-agonist (LABA) and long-acting muscarinic antagonist (LAMA). Explain why the preferred maintenance treatment differs between these two obstructive lung diseases. Relate your answer to the underlying pathophysiology.