What provides evidence that all life on Earth evol23grrp -y:k0oviou 1oved from the same population of cepv0rogoki2 ur o31: -ylls?

  Identify the correct row in the table regarding the formation of vesfuiy2 4 /szlt4icles.

  Whose experiments disproved spontaneous gen7biwgva )+s8yr k4mhq+ci)5 seration?

  Which type of isotopes are commonly used in absofvqm d-nxnl* i75w:p8lute dating of fossils?

  Which of the following j- 0suxj4ah3bstatements are reasons that RNA is believed to be the first genetic materiajs0hjua3-4 b xl?
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 the apparatus used in the experiments conducted )ko k9ba rc01qby Miller a1kb 9c0 oraqk)nd 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 acczrz2dk*2l k:b09w s 6 j(ea, tabjt;zmepted theory. This theory suggested that organic compounds, those found in living organisms, could only be produced through a "vital fd6tbk2tr a,zkj2 ael *9(0jw z sbm;:zorce" present in living matter.

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

  Which of the following is not evidence to sup**za;)i 5ymxk;-iclk ga *s gfport that the last universal common ancestor (LU* xiy *azi-fkgk ;a*)cg5s;mlCA) could have emerged at hydrothermal vents?

Researchers carried out a similar experiment tpsyjykvv7x x 0 n04/z7;rd-zio Louis Pasteur’s famous experiment disproving spontaneous generation, using the set up belowr ydpi7z kxv7 /0yvzj 0x-n4s; 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 generatisnf/pti(c r u53,u1 jzon were replicated by placins3czi(ju 1t/upr fn5,g broth 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 a living cel-jp /h 02tpg8ng,oja+a s)fhhl which can carry out all n +gj f-pas/ho8tj0ph), ha2gthe functions 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.