What provides evidence that all life on iqs4s2eu;. r ,rr j gh+;tts9mEarth evolved from the same population og. 94rstqi;;2rh jts , +sremuf cells?

  Identify the correct row in the table regarding the formaxvm2 -4cqah.5k +eu(5 kcgzvv tion of vesicles.

  Whose experiments disproved spontaneous generatiz2 0n2fdns c6oon?

  Which type of isotopes are commonfgd uutu3 j51gq1m;c0 5senn*ly used in absolute dating of fossils?

  Which of the following statements are reasons tl:r6:krq yuzdygg)5.e.gh )j hat RNA is believed to be the first geneg)uy eg kr dg5qj.: l.h6)r:yztic material?
I. RNA can form spontaneously when nucleotides are present
II. RNA contains ribose as its sugar
III. Miller demonstrated that organic molecules could be produced from a mixture of gases under conditions that simulated early Earth

The diagram below shows tu, -xsxg)4lqqks+ c k9he apparatus used in the experiments conducted by Miller and u gqskkl,x+)-9x4sqc Urey.


Describe how this experiment showed that the origin of life was possible on early Earth.

  In the early 19th century, vitalism was a widely acc ggd3+g f6lmc8hf1v :cepted theory. This theory sugc 1f8vl +6:fgdc hm3gggested that organic compounds, those found in living organisms, could only be produced through a "vital force" present in living matter.

What was the role of urea in falsifying the theory of vitalism?

  Which of the following is f au 79plwu:akwp*97i not evidence to support that the last universal common ancestor (LUCA) could have emerged at hydrothermal p99 wfp a:a7* li7uwkuvents?

Researchers carried out a similar experiment to Louis Pa)o4t1ff + n gif1 qf*;lpyu0fmsteur’s famous experiment disproving spontaneous ge 1fff;ln4 i0y* 1mff+qogtpu)neration, using the set up below at 30°C.



1.Outline the theory of spontaneous generation.

2.1.State two variables that must be controlled in this experiment.

2.2.Explain why it is important to have controlled variables in this study.

3.1.State the letters of three flasks which would show signs of decomposition of broth.

3.2.Explain your answer to part (i).

4.Suggest, with reasons, how the results of the study would differ if the flasks were incubated at 4°C.

  Louis Pasteur's famous experiments disproving spontaneous generation were replimfo 1+ dy,irmm *++yldcated by placing borfiy y1+mld*d m ++m,roth into various flasks.

Which two flasks would show the presence of microorganisms in the results?

Below is a diagram of Euglena a photosynthetic protist. It is 3ue h6 06+xnp ujfc:jra living cell which can carry out all the functip6jrfxuj036h+c : n ueons of life.

1.1.State which function of life the flagellum is adapted for.

1.2.State which function of life is enabled by the contractile vacuole.

2.Outline why viruses are not regarded as living organisms.

3.State two main principles of the cell theory

4.Explain how the properties of phospholipids mean they naturally form vesicles when in aqueous solution.

5.Explain how the formation of vesicles was important in the evolution of cells.