What provides evidence that all life on Earth evolved vze9 aodt4- 0ifrom the same population of celo4zve i0 -9dtals?

  Identify the correct row in the table regarding ggpbn52t t+u8 qj m.-qthe formation of vesicles.

  Whose experiments disa87ab f ms -.cioy:v2aproved spontaneous generation?

  Which type of isotopes are commonly used in absolute datinye 2 d udf8x exn,; tb(l/pt/5dkjis:9g of fossils?

  Which of the following statements are reasons that RNA is believez;j ,cudwi l6kyjr;* :d to be the first genetic material?i;*rzw6:,yjdk;j u lc
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 usezgjy6s2 7ernriasw + nlz ::,:) i+xred in the experiments conducted by Miller and erx+ iy gwri:z:6,2): n+nzl7rae jss 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 accepted theory. Thisu-(km b/v (qps theory suggested that organic compounds, those found in living organisms, could o-(qbm vs/p uk(nly 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 not evidence to s/rpmn ty 9c)k9upport that the last universal common ancestor (LUCA) could have emrtym99 /c p)nkerged at hydrothermal vents?

Researchers carried out a similar experiment to Louis Pasteur’s famous experime :(.ntau9 jtq-5wfxv znt disproving spontaneous generation, using the set up below atfw-t. 5 nu zxv9j:t(qa 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 replic)jn o(mo rt-l,ated by placing bro mr n-)j,tol(oth into various flasks.

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

Below is a diagram of Eu sr* r kxubrp;,j6k93/f.zmfzglena a photosynthetic protist. It is a living cell which cau63fmkz9 ,x prk rfrz;*bjs./n carry out all the 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.