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The sexually transmittable disease gonorrhea has become increasingly resistant to treatment with antibiotics. What is the most likely scientific explanation?
A) The gonorrhea bacteria changed their genes when they sensed antibiotics
B) Antibiotic sensitive gonorrhea bacteria died out, but antibiotic-resistant gonorrhea bacteria have flourished and persisted
C) The antibiotic increased the mutation rate in the gonorrhea bacteria
Explain the process of skeletal muscle contraction, starting from the efferent motor neuron's action potential, and ending with the relaxation of the muscle.
A patient has esophageal cancer and should have a feeding tube inserted. The nurse tells the patient that the tube will be inserted surgically into the duodenum. The wife asks why the tube will not be inserted into the stomach directly.
A karyotype reveals that an individual is XYY
When a yellow female Labrador retriever was mated with a brown male, half of puppies were brown and half were yellow. The same female, when mated to a brown male produced all brown puppies.
A man and woman are both of normal pigmentation and have a one child out of three who is albino (without melanin pigmentation). Albinism is an autosomal (not sex-linked) recessive trait. What are the genotypes of albino's parents.
if you're interested in designing new antibiotics targeting bacteria aside from peptidoglycan, what are two other bacterial components you could target without necessarily causing harm to humans?
Why is it that gazelles are more likely to stot in response to coursing predators than to stalking predators (african wild dogs vs cheeahs)? I thought it would make sense that it would be profitable to stot in reponse to a stalking predator.
What is the difference between a root and a rhizoid? What are the "two hallmarks" (p. 574) of alternation of generations? What two stages alternate, and when do mitosis and meiosis happen?
describe in a one paragraph. Contrast the functions of the pulmonary vs. the systemic circuits.
Endergonic and Exergonic Reactons, you studied a figure with a comparison of combustion and cell respiration. Do you think it's possible that our bodies sometimes release energy.
Discuss the five main types of histone proteins, and describe what role each of them plays in the nucleosome. Based on what you know about them,
Write a case study which detailing a scenario of a patient being investigated in the Haematology laboratory.
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