CHAPTER 1: The evolution

1.Which of the following lacks a true membrane-bound nucleus?

• Fungi

• B. Archaea
  

• Bacteria

• Protozoa

2.What is the typical size of a bacterial ribosome?

• 80S

• 60S

• 70S

• 90S

3.Which microbial group performs oxygenic photosynthesis and produces large amounts of oxygen?

• Algae

• Cyanobacteria

• Fungi

• Archaea

4.Which of the following domains includes organisms with peptidoglycan in their cell walls?

• A. Archaea
  

• Eukarya

• Bacteria

• Viruses

5.Which microbial cell type is usually larger and more complex morphologically?

• Bacteria

• Archaea

• Eukaryotes

• Viruses

6.Which acellular infectious agent is composed only of protein?

• Virus

• Viroid

• Prion

• Bacteriophage

7.Who was the first person to observe and accurately describe microorganisms?

• • Edward Jenner

• Louis Pasteur
• Antonie van Leeuwenhoek
• Robert Koch

8.What is the function of ribozymes according to the RNA world hypothesis?

• A. Transfer RNA to ribosomes
  

• B. Catalyze peptide bond formation
  

• C. Transcribe mRNA
  

• • D. Break down DNA

9.Which molecule is considered the precursor to both proteins and genetic material in the earliest life forms?

• DNA

• RNA

• proteins

• lipids

10.Which technique did Francesco Redi use to disprove spontaneous generation in maggots(con giòi)?

• A. Swan-neck flask
  

• B. Sealed meat jars
  (lọ thịt kín)

• C. Boiling broth
  

• 1. D. Petri dish culturing