Prokaryotic Cells

Question 1

what are the seven characteristics of cells?

Answer 1

movement, respiration, sensitivity, growth, reproduction, excretion, nutrition

Question 2

what are the 3 main principles of the cell theory?

Answer 2

• all life forms are made from one (unicellular) or more (multicellular) cells.
• cells only arise from pre-exisiting cells
• the cell is the smallest independent form of life.

Question 3

what are prokaryotic cells?

Answer 3

prokaryotic cells are simple and small (1-10 um) cells that have no membrane bound organelles, no real nucleus and contain circular chromosomes.

Question 4

prokaryotic cells / cell wall:

Answer 4

provides protection to for the cell

Question 5

prokaryotic cells / cell membrane:

Answer 5

control the exit/entry of substances

Question 6

prokaryotic cells / flagellum:

Answer 6

whip-like movement

Question 7

prokaryotic cells / pili:

Answer 7

movement or attachment to surfaces

Question 8

prokaryotic cells / nucleoid:

Answer 8

location of the circular DNA for inheritance

Question 9

prokaryotic cells / cytoplasm:

Answer 9

place for chemical reactions

Question 10

prokaryotic cells / ribosomes:

Answer 10

location of protein synthesis

Question 11

prokaryotic cells / plasmid:

Answer 11

seperate circular DNA, helping defence