Plants often use external signaling to attract animals, ofteninsects, to enhance their survival and / or reproductive success.Describe two distinct ways that a plant might use chemical cues toattract animals to benefit the plant’s survival. In oneexample, describe in detail how a plant might use a chemical signalthat recruits an […]

Question: Ribosomes found in bacterial cells consist of two subunits, a small subunit (30S) and a large subunit (50S). “S” stands for Svedberg units, which indicated the relative sedimentation rate in a centrifuge for a particle of a given size and shape. The small ribosomal subunit consists of a single 16S […]

An ASU student came down with severe diarrhea and vomiting after spring break at Cancun, Mexico. Laboratory tests of stool samples from the patient confirmed a gram negative bacterial pathogen as the cause of infection. Further analysis revealed the presence of facultative anaerobic, non-endospore forming, non-encapsulated, oxidase negative bacteria. Based […]

Ann is a healthy 26-year-old white female. Since the beginning of this current golf season, she has noted increased short­ness of breath and low levels of energy and enthusiasm. These seem worse during her menses. Today, while playing poorly in a golf tournament at a high, mountainous course, she became […]