MIC542 - L1

The following are eukaryotic cells except:

• fungi

• yeast

• algae

• bacteria

Which of the following structure able to regulate the movement of materials including enzymes?

• cell wall

• cell membrane

• pilus

• slime layer

The following are Gram-positive bacteria, except:

• Bacillus cereus

• Streptococcus mutans

• Salmonella typhimurium

• Staphylococcus aureus

Which of the following solutions are used to counter stain the bacterial cell?

• Alcohol

• Safranin

• Iodine

• Crystal violet

What is function of bacterial cell wall?

• act as selective permeable to control movement of compounds

• provide shape and structural support.

• space for porin aattachment

• allow the transportation of any molecules

The cell wall of Gram-positive bacteria consists of the following except:

• thick peptidoglycan

• porins

• periplasm

• outer layer membrane

Water moves down its concentration gradient until osmolarity is equal. The following statement is the best refer to_______

• osmosis

• hypertonic

• hypotonic

• isotonic

The bacterial cell will burst if placed in the _____________ solution.

• hypotonic

• hypertonic

• isotonic

____________ region is an area that loves water.

• hydrophobic

• hydrophilic

the bacterial cell will shrink if they are placed in _______ solution

• 0.85% NaCl

• distilled water

• 1.5% NaCl