38.i Daniele discover a new microbe that can grow in the presence of oxygen and do not use it, then this microbe is

Select one:

a obligate aerobes

Ob facultative anaerobes

O caerotolerant anaerobes

Od microaerophiles

39.If Anastacia discover a microbe that can grow in the presence of oxygen, then this microbe must contain the

following enzyme or enzymes

Select one:

O a superoxide dismutase.

b. superoxide dismutase and catalase.

O c. catalase.

d. cytochrome oxidase.

e. glycolase.

40.Which of the following microorganism has the longest generation time?

Select one:

O a. Mycobacterium leprae

O b. Salmonella typhimurium

O c. Escherichia coli

d. Bacillus subtilis

oxygen = 21% of the atmosphere

nitrogen = 78%

carbon dioxide = 0.1%

argon =0.934%

the cost of mining is extremely low compared to the money earned from mining, creating income to improve the environment.

ans.

dna fingerprinting is defined as a process that determines the dna characteristics of an individual. these dna characteristics are unique among individuals as their fingerprints, so it is known as dna fingerprinting.

steps of dna fingerprinting includes extraction of dna from sample, amplification of dna, restriction digestion of amplified dna, and then analysis of dna by gel electrophoresis, respectively.

thus, the next step performed by the scientist is 'to cut the amplified dna (obtained by polymerase chain reaction) by restriction enzymes that cleave the dna into fragments and their analysis.'