41. The attractant is placed on the object near the trap and a urine scent sprayed to the object. 42. This species is a strong bee attractant and also serves as a host plant for Variable Checkerspot larvae. 43. Once there, she emits a chemical attractant , letting males know she is ready to hit the beach. 44. The holy grail in reproductive biology has been to find the sperm attractant and to understand how it works. 45. It is produced in small amounts by most plants and it acts as an attractant to many predatory insects. 46. Quite interestingly, the same guidance cue can act as an attractant or a repellent, depending on context. 47. The complexity of his compositions is cited by some fellow band members as an attractant to play his music. 48. In a decreasing attractant gradient, there is an increase in bacterial tumbling, produced by a clockwise flagellar rotation. 49. This change in direction allows for alternation between smooth swimming and tumbling which biases the bacterial random walk towards attractant . 50. The researchers are studying pheromones, or sex-attractant chemicals, and the function of the male's antennae.
