TLS Online TPP Program

#Question id: 613


Ethanol (CH3CH2OH) is the alcohol found in beverages. It is oxidized in the body to acetaldehyde by the enzyme alcohol dehydrogenase. Methanol (CH3OH), also known as wood alcohol, is converted to formaldehyde by the same enzyme. Acetaldehyde is toxic, but formaldehyde is far more toxic to humans, which is why the ingestion of relatively small amounts of methanol can cause blindness or death. One treatment for mild methanol poisoning is the administration of ethanol. Why might a doctor choose this treatment?

#SCPH05 I Biotechnology
  1. Ethanol must act as a competitive inhibitor for the alcohol dehydrogenase and therefore slows the formation of formaldehyde.

  2. Ethanol likely irreversibly binds to alcohol dehydrogenase which prevents the formation of formaldehyde.

  3. The ethanol is likely an uncompetitive inhibitor and binds to a site other than the active site of the enzyme.

  4. The doctor has given up on the patient and administers ethanol for sedation.

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TLS Online TPP Program

#Question id: 17076

#SCPH01 Biochemistry

The various advantages of serum-free media could be
1. Improved reproducibility of results from different laboratories
2. Easier downstream processing of products from cultured cells
3. Biassays are free from interference due to serum proteins
4. They permit selective culture of diffrentiated cell types from the heterogeneous cultures
Which of the statements are true?

TLS Online TPP Program

#Question id: 17076

#SCPH06 I Botany

The various advantages of serum-free media could be
1. Improved reproducibility of results from different laboratories
2. Easier downstream processing of products from cultured cells
3. Biassays are free from interference due to serum proteins
4. They permit selective culture of diffrentiated cell types from the heterogeneous cultures
Which of the statements are true?

TLS Online TPP Program

#Question id: 17076

#SCPH28 | Zoology

The various advantages of serum-free media could be
1. Improved reproducibility of results from different laboratories
2. Easier downstream processing of products from cultured cells
3. Biassays are free from interference due to serum proteins
4. They permit selective culture of diffrentiated cell types from the heterogeneous cultures
Which of the statements are true?

TLS Online TPP Program

#Question id: 17077

#SCPH01 Biochemistry

Cells lacking Thymidine kinase if introduced into HAT medium which pathways will continue for nucleotide synthesis

TLS Online TPP Program

#Question id: 17077

#SCPH06 I Botany

Cells lacking Thymidine kinase if introduced into HAT medium which pathways will continue for nucleotide synthesis

TLS Online TPP Program

#Question id: 17077

#SCPH28 | Zoology

Cells lacking Thymidine kinase if introduced into HAT medium which pathways will continue for nucleotide synthesis