Alexander fleming was a biologist who was best known for his discovery of the antibiotic penicillin. during his research, dr. fleming noticed that there was no bacterial growth where there was mold growing on his petri dishes. he could have thrown out his plates, but instead he cultured the mold.
how did dr. fleming’s creativity lead to a scientific discovery?

he noticed that bacteria cells and mold coexisted well.

he observed that bacterial cells had become mold.

he concluded that the mold inhibited the growth of bacteria. he inferred that mold and bacteria share most of their dna.

An organism has the following traits multicellular cant photosynthesize has a skull. wht kingdom does this organism most likely belong too?

Consider the motion of the balloon and its air contents in terms of momentum. in step 1 above, the total momentum of the balloon and its contents was zero. recall that momentum = mv. both the balloon and the air inside it had a velocity of zero and therefore the total momentum was zero. now think about what happened when the air escaped from the balloon. a certain mass of air accelerated in one direction. in order to keep the total momentum of the system zero, the balloon itself (which has mass) had to accelerate in the opposite direction. use this scenario to you explain why the soda can rotates when the water squirts out of the escape holes. what was your hypothesis concerning the water-filled can? according to your data, do you think your hypothesis was correct? (be sure to refer to your data when answering this question.) summarize any difficulties or problems you had in performing the experiment that might have affected the results. describe how you might change the procedure to avoid these problems. give at least one more example of newton's third law in everyday life.

Which are characteristics of flukes? check all that apply. a they are free living. b they are a type of flatworm. c they reproduce sexually. d they have eyespots. e they are segmented.