Biology, 18.08.2019 22:30, suewignall
Which of the following statements best represents how genetics supports the theory of evolution? a. organisms best suited to their enviroment will survive. b. organisms have almost identical dna sequences. c. organisms in the early stages of embryology look almost identical d. organisms that have similiar anatomical structures can share a common ancestor.
Answers: 1
Biology, 22.06.2019 03:50, FoxGirl1971
2. how does the miller-urey experiment fall short of demonstrating that life can arise from inorganic molecules? explain. a. it doesn't show a leap between a collection of amino acids and a single-celled organism. b. it recreates the conditions that existed at the earth's beginning, but no molecules form as a result. c. it doesn't provide evidence of the formation of amino acids. d. it doesn't show how multicellular organisms developed from unicellular organisms
Answers: 2
Biology, 22.06.2019 13:00, christianfielding336
Astudent from one of the research labs is having trouble preparing a slide for examination and photographing. the bacterial slide that he has brought to you was prepared using a commercially purchased stain. he has asked for your in determining what he is doing wrong so that he can change the lab protocols and continue on with his project. after examining the slide under oil immersion, you determine that no bacteria are present even though the student is able to show you the culture he used to make that slide that has visible growth in the liquid medium. which of the following statements does not explain the fact that there are no bacteria present on the student’s slide? by not allowing a glass slide to completely air dry before heat fixation, the flame will cause the surrounding water to boil and this will damage the bacterial cell. overheating during the fixation step boiled the water within the bacterial cells and resulted in the cells bursting. insufficient heating of the slide did not drive out the thin layer of water and this resulted in minimal bonding between the bacteria and the glass slide. rinsing with alcohol during the washing step stripped the bacteria off the glass slide. rinsing with alcohol during the washing step stripped the bacteria off the glass slide.
Answers: 1
Biology, 22.06.2019 15:30, gamer67respress
What are potential sources of error in marta’s experiment
Answers: 1
Which of the following statements best represents how genetics supports the theory of evolution? a....
Arts, 24.10.2019 17:43
Mathematics, 24.10.2019 17:43
English, 24.10.2019 17:43
Mathematics, 24.10.2019 17:43
English, 24.10.2019 17:43
Biology, 24.10.2019 17:43