Answer with Explanation:
These species have different structural composition therefore they possess bacterial resistance towards disinfectants. As Bacillus megaterium belongs to spore producing family therefor it is said that they are most difficult to kill followed by Mycrobacterium bovis having a thick wall with waxy coating. While Pseudomonas aeruginosa is a gram-negative cell and staphylococcus aureus is a gram-positive bacteria.
By following order, you rank their susceptibility to disinfection:
Least Susceptible > Most Susceptible
Bacillus megaterium>Mycrobacterium bovis>Pseudomonas aeruginosa>staphylococcus aureus
Answer:
iAiA or iAi = Type A
Explanation:
Blood group in humans is controlled by a gene with multiple alleles. The alleles iA and iB are co-dominant over one another but dominant over allele i. In the blood type:
iAiA or iAi - type A
iBiB or iBi - type B
iAiB - type AB
ii - type O
According to this question, a man and a woman have a child together. The mother's blood type is type O (ii) and the child's blood type is type A (iAi). This means that the father's blood type must be a type A with genotype "iAiA or iAi".
Answer:
C. When the chest volume expands, air can now rush in through the puncture without filling the alveoli.
Explanation:
During inhalation, the contraction of the diaphragm and the external intercostals increase the volume of the chest cavity. As the chest cavity expands, the alveolar pressure become lower than the atmospheric pressure resulting in the flow of air into the lungs in response to the pressure gradient.
The chest cavity is an airtight chamber. This ensures that any changes in the volume of are chest cavity corresponds to the volume of the lungs. If a lung is punctured, the air would not fill the punctured lung but would escape through the hole. Therefore, the punctured lung would not be filled with air during inhalation.
Answer:
Explanation:
The surface of smooth endoplasmic reticulum that faces the cytoplasm lacks ribbon hence the name smooth endoplasmic reticulum.
The surface of the rough endoplasmic reticulum facing the cytoplasm is studded with ribosomes hence the name rough endoplasmic reticulum.
Both are part of the endomembrane system
The smooth ER functions in the detoxification of drugs.
The rough ER due to the fact that it is students with ribosomes also functions in protein synthesis
The smooth ER coupled with the detoxification of drugs or excess alcohol also help in the synthesis of lipids.
Answer:
Viroids are molecules of RNA are not classified as viruses
Explanation:
because they lack a protein coat. They have characteristics that are common to several viruses and are often called subviral agents. Viroids are important pathogens of plants.