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TLS Online TPP Program

#Question id: 37992

Gynogenesis is considered a significant alternative to androgenesis (anther culture) specifically in cases where: 

#Plant Biotechnology
  1. The plant produces too much pollen. 
  2. Anther culture is unsuccessful or produces albino plants (e.g., Gerbera). 
  3. The plant is dioecious.
  4. High ploidy levels are required
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TLS Online TPP Program

#Question id: 40184

#Applied Microbiology

Choose the correct option regarding the bacterial cell wall.

Assertion (A): N-acetylmuramic acid (NAM) is a crucial component of the bacterial cell wall found in both Gram-positive and Gram-negative bacteria.

Reason (R): NAM residues serve as the attachment point for the peptide chains that cross-link the peptidoglycan layers. 
TLS Online TPP Program

#Question id: 40185

#Applied Microbiology

Read the following statements regarding the bacterial cell envelope:

Statement I: The outer membrane of Gram-negative bacteria contains Lipopolysaccharides (LPS), which consists of Lipid A, Core polysaccharide, and O-antigen.

Statement II: Lysozyme breaks down the bacterial cell wall by cleaving the glycosidic bond between Lipid A and the Core polysaccharide. 
TLS Online TPP Program

#Question id: 40186

#Applied Microbiology

Which of the following are TRUE regarding the difference between Gram-positive and Gram-negative cell walls?

(A) Gram-positive walls have a thick peptidoglycan layer.

(B) Gram-negative walls contain Porin proteins.

(C) Gram-positive walls contain a Periplasmic space.

(D) Gram-negative walls lack Teichoic acids. 

Choose the correct combination:

TLS Online TPP Program

#Question id: 40187

#Applied Microbiology

During which phase of the microbial growth cycle are cells most metabolically active and dividing at a constant maximum rate?
TLS Online TPP Program

#Question id: 40188

#Applied Microbiology

Match the growth phase in Column A with its correct characteristic in Column B.

Column A (Phase)Column B (Characteristic)
1. Lag PhaseA. Exponential decrease in the number of living cells.
2. Log PhaseB. Adaptation to new environment; synthesis of enzymes.
3. Stationary PhaseC. Nutrient depletion leads to equal rates of growth and death.
4. Death PhaseD. Uniform and rapid cell division; population doubles.
TLS Online TPP Program

#Question id: 40189

#Applied Microbiology

Read the following statements regarding the bacterial growth curve and choose the correct option.

Statement I: In the Lag phase, there is an immediate increase in the cell number as bacteria start dividing instantly.

Statement II: Secondary metabolites (like antibiotics) are predominantly produced during the Stationary phase.