Answer:
you didn't post a picture of the question
Answer:
The correct answer is: Actinobacteria
Explanation:
Actinobacteria is a phylum of the Gram-positive aquatic or terrestrial bacteria that have high concentrations of guanine and cytosine in their DNA.
These bacteria are economically important to the human beings as they produce bioactive metabolites used in producing medicines and are also responsible for the <u>decomposition of organic matter of dead organisms in the soil.</u>
<u>Therefore, Actinobacteria will be the best bacteria to be used in the laboratory.</u>
1. Passage of a sperm through the corona radiata of the oocyte.
2. Penetration of the zona pellucida.
3.Fusion of the plasma cell membranes of the oocyte and sperm. after fusion the sperm head and tail enters the oocyte but plasma membrane of sperm doesn't.
4. Completion of the second meiotic division of the oocyte. this creates female pronucleus and polar body 2.
5. Formation of the male pronucleus (nucleus of sperm enlarges)
6. Breakdown of the pronuclear membranes and restoration of diploid number of chromosomes.
Answer:
Li, Na, K, Rb
Explanation:
Los números atómicos de la tabla periódica:
Li - 3
Na - 11
K - 19
Rb - 37
Answer:
to minimize the amount of oxygen introduced to the contents of the tube.
