Choose the sentence with the correct grammatical structure, paying attention to the often confused uses of 'ser vs. estar' and 'por vs. para'. 1. Fernando me regaló un boleto por el partido de fútbol, pero el estadio está lejos de la ciudad y no puedo viajar por tren. 2. Fernando me regaló un boleto para el partido de fútbol, pero el estadio es lejos de la ciudad y no puedo viajar por tren. 3. Fernando me regaló un boleto para el partido de fútbol, pero el estadio está lejos de la ciudad y no puedo viajar por tren. 4. Fernando me regaló un boleto por el partido de fútbol, pero el estadio es lejos de la ciudad y no puedo viajar para tren.
3 is correct. para/está/por These difficult concepts would require conversational teaching and cannot be adequately explained in a written answer.
Briefly explain the theory behind the development of antibiotic resistance. What is the initiative in medicine to combat this trend?
We use antibiotics in medicine to treat people with bacterial infections. Antibiotics are designed to kill the bacteria, spare our own cells and resolve the infection. However, the bacteria causing a certain infection are not all identical -- some have ways to evade the antibiotic drug and are not eliminated. These 'resistant bacteria' survive and proliferate, passing on their particular mechanism of overcoming the antibiotic. The next time the drug is used against this population of bacteria, more bacteria will survive, resulting in a potentially complicated and serious infection. Antibiotic stewardship is the practice of limiting antibiotic use to treatable bacterial infections and choosing antibiotics that target the particular infectious agent most specifically. Misuse of antibiotics by healthcare providers (using antibiotics when the infectious agent is a virus or using overly broad-spectrum antibiotics for the causative infection) has contributed significantly to the development of antibiotic resistance, and improved antibiotic stewardship will reduce the amount of resistant bacteria that develop.
Your father and your maternal grandfather have an autosomal recessive condition but your mother does not express the condition. What is the likelihood you inherit the condition? What is the likelihood you are a genetic carrier?
1/2, 1/2. Your father must have two recessive alleles to express the condition and will therefore pass one recessive allele to you. Your mother is heterozygous (containing one dominant and one recessive allele) since her father has the condition and gave a recessive allele to her. You can draw out a 2x2 Punnett Square to illustrate that in two genetic scenarios you will inherit your mother's dominant allele and in two others you inherit her recessive one. Thus, you have a 50% chance of inheriting the condition and a 50% chance of being a heterozygous carrier.