1st Year Biology Chapter 6 Test06. Prokaryotes

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

1. Thermoacidophiles thrive in which conditions?
   1. Cold and basic
   2. Hot and acidic
   3. Salty and dry
   4. Cold and saline
2. What is a significant difference between bacterial membranes and eukaryotic cell membranes?
   1. Bacterial membranes do not contain cholesterol.
   2. Eukaryotic membranes have peptidoglycan layers
   3. Bacterial membranes have a phospholipid bilayer
   4. Eukaryotic membranes lack membrane proteins
3. The cell wall of bacteria is composed mainly of:
   1. Cellulose
   2. Pectin
   3. Chitin
   4. Peptidoglycan
4. The cell wall is absent in which bacterial group?
   1. Bacillus
   2. Mycoplasma
   3. Streptococcus
   4. Vibrio
5. Antiseptics are used on:
   1. Non-living surfaces
   2. Living tissues
   3. Instruments
   4. Furniture
6. How do chemosynthetic bacteria obtain energy for growth and metabolism?
   1. Through photosynthesis
   2. By oxidizing inorganic compounds.
   3. By consuming organic matter
   4. From sunlight
7. The main pigment in purple bacteria is:
   1. Bacteriochlorophyll
   2. Chlorophyll-a
   3. Chlorophyll-b
   4. Phycoerythrin
8. Staphylococcus aureus normally lives in the:
   1. Intestine
   2. Mouth
   3. Colon
   4. Nose and skin
9. The kingdom Monera included which type of organisms?
   1. Eukaryotic organisms
   2. Multicellular organisms
   3. Prokaryotic organisms
   4. Photosynthetic organisms
10. The early microorganisms that lived in extreme heat were probably:
    1. Psychrophiles
    2. Mesophiles
    3. Hyperthermophiles
    4. Halophiles