Bacteria - GS questions based on daily current affairs

1)   Consider the following statements

1. The "smell of rain" is caused by a bacteria called actinomycetes.
2. Ribosomes are absent in bacteria.

Which of the above statements is/are correct?

a. Only 1
b. Only 2
c. Both
d. None

2)   Consider the following statements

1. Researchers have developed biocapsules which are made of a polymer with size less than one millimeter.
2. These capsules are filled with insulin or antibiotics. Doctor places them on the infection site, and gives micro-shock waves through a handheld machine.
3. These shockwaves kill Staphylococcus bacteria and facilitate in drug-release from capsule.
4. It will replace the Injections.

Which of the above statements are true?

a. 1,3,4
b. 1,2,4
c. 2,3,4
d. All the above

3)   Which of the following statement is wrong?

a. Widespread use of penicillin and other anti-biotic made the bacteria resistant to the drug
b. Bacteria are broadly classified into two groups called Gram-negative and Gram-positive.
c. Gram-positive have outer membrane present
d. Mixing silver with antibiotics will causes bacteria to produce extremely toxic substances called reactive oxygen species. These go on to cause damage inside the cell, harming the DNA, proteins and even the membranes that surround cells.