Answer:
B: Large molecules often cross the plasma membrane while inside vesicles.
Fats and proteins or water and carbohydrates
Answer:
Gram-negative bacteria
Explanation:
When the bacteria took pink color (safranine), it means they are gram-negative bacteria. Gram-negative bacteria have thick cell walls it does not take crystal violet stain as its cell wall is thicked. It take-up counterstain safranine and seen pink in the microscope.
It could possibly be 1 or 4.
