Question

In: Biology

22. The cell walls of plants, fungi, bacteria and archaeans are composed of different polymers yet...

22. The cell walls of plants, fungi, bacteria and archaeans are composed of different polymers yet serve the same function (support and protection). What does this signify about their evolution? (2)

23. Binary fission in bacteria produces a(an)

a. identical copy (clone) of the original cell

b. new combinations of genes in the ‘offspring’

24. The process of a bacterium taking up DNA from its environment is called

25. The process of ‘bacterial sex’ (DNA transferred from one bacterium to another via a pilus) is called

26. The process of genes being transferred between bacteria via a virus is called

27. Why might sexual reproduction in bacteria be important? (2)

28. An organism that produces its own food using energy obtained from the sun is called a

a. photoautotroph

b. heterotroph

c. mixotroph

d. chemoautotroph

29. An organism that must eat other organisms to obtain food/energy is called a

a. photoautotroph

b. heterotroph

c. mixotroph

d. chemoautotroph

30. A protist that can photosynthesize and/or consume another organism is called a

a. photoautotroph

b. heterotroph

c. mixotroph

d. chemoautotroph

31. A prokaryote that can use oxygen if it is present, but can also live in the absence of oxygen is called a(an)

a. facultative anaerobe

b. obligate aerobe

c. obligate anaerobe

32. What is a biofilm? Give an example.

33. Why was Kingdom Protista abandoned (or disbanded) in the early 1990’s?

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Expert Solution

gladiator answered 1 year ago
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