Question

in a completed gram stain, gram - positive bacteria are purple. true false question 75 (1 point) bacteria come in 4 basic shapes. true false question 76 (1 point) spontaneous generation refers to living cells arising only from other living cells. true false question 77 (1 point) louis pasteur developed the germ theory of disease. true false

Explanation:

• In Gram - staining, gram - positive bacteria retain the crystal violet - iodine complex and appear purple, so the first statement is true.
• Bacteria have four basic shapes: coccus (spherical), bacillus (rod - shaped), spirillum (spiral - shaped), and vibrio (comma - shaped), so the second statement is true.
• Spontaneous generation is the incorrect idea that living organisms can arise from non - living matter, not that living cells arise only from other living cells (which is biogenesis), so the third statement is false.
• Louis Pasteur made significant contributions to the development of the germ theory of disease, so the fourth statement is true.

Answer:

• Question 74: A. True
• Question 75: A. True
• Question 76: B. False
• Question 77: A. True