A recombinant DNA molecules is produced by

a) by cutting DNA from two source

b) Joining of two or more DNA fragments from different organism 

c) Joining of two or more DNA fragments originating from different organisms

#Question id: 11231

#Unit 9. Evolution & Diversity of Life Forms

Which of these is the most common compound in the cell walls of gram-positive bacteria?

#Question id: 11232

#Unit 9. Evolution & Diversity of Life Forms

Penicillin is an antibiotic that inhibits enzymes from catalyzing the synthesis of peptidoglycan, so which prokaryotes should be most vulnerable to inhibition by penicillin?

#Question id: 11233

#Unit 9. Evolution & Diversity of Life Forms

Jams, jellies, preserves, honey, and other foodstuffs with a high sugar content hardly ever become contaminated by bacteria, even when the food containers are left open at room temperature. This is because bacteria that encounter such an environment

#Question id: 11234

#Unit 9. Evolution & Diversity of Life Forms

The typical prokaryotic flagellum features

#Question id: 11235

#Unit 9. Evolution & Diversity of Life Forms

In a bacterium that possesses antibiotic resistance and the potential to persist through very adverse conditions, such as freezing, drying, or high temperatures, DNA should be located within, or be part of, which structures?

1.  nucleoid region

2.  flagellum

3.  endospore

4.  fimbriae

5.  plasmids

#Question id: 11236

#Unit 9. Evolution & Diversity of Life Forms

Which two structures play direct roles in permitting bacteria to adhere to each other, or to other surfaces?

1.  capsules

2.  endospores

3.  fimbriae

4.  plasmids

5.  flagella