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Many infectious diseases are becoming difficult to treat because of bacterial resistance to antibiotics. Populations of bacteria can become resistant when they are exposed to an antibiotic. What is the best general explanation for how this occurs?
a) The antibiotic induces specific mutations in some of the bacteria that make them antibiotic-resistant.b) The antibiotic activates bacterial genes encoding enzymes that can destroy the antibiotic.c) The antibiotic increases the bacterial mutation rate, so that resistant mutant bacteria are more likely to arise.d) Antibiotic-resistant mutant bacteria already present in the population survive and reproduce in the presence of the antibiotic.
Characteristics of a malignant state include: 1) Dysregulation of the cell cycle and 2) Inhibition of apoptosis. These mechanisms are also hallmarks of a many viral infections? Why are these characteristics also beneficial to many viruses? Explain ho..
When a person exercises, muscle tissue produces both fixed acids (lactic acid) and volatile acids (CO2). In terms of the binding of oxygen to hemoglobin, how might this mild acidosis be beneficial to the person?
The resting potential of a neuron is approximately -60mV. Neurons maintain this electric potential by maintaining a balance of ions inside and outside the membrane. Which of the following is the most significant factor in determining this balance.
Type your question hereHow is the plasticity of the brain throughout life evident in recovery from brain damage? What are some factors that determine its extent and facilitate recovery? What limits are there in recovery from injury in children? In..
Which of the following statements are true.
Explain how photosynthesis and respiration are linked in order to provide you with energy from the food you eat.
Use Chargaff's rule to determine the base composition of the other strand.
What are the steps that the musculoskeletal system goes through fro childhood to adulthood to reach 206 bones?
Batch and continuous sterilisation
A diagnostic of phlebitis was made. What is Phlebitis and what more serious condition may result if proper healing doesn't occur? What is the treatment for this patient and what will be the likely outcome from this disease.
Galactosemia is an autosomal recessive human disease that is treated by restricting lactose and glucose in the diet. Susan Smithers and her husband are both heterozygous for the Galactosemia gene.
Explain why bacteria do not have apoptotic signaling pathways.
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