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TLS Online TPP Program

#Question id: 10366

Cyanobacteria can fixes nitrogen in an anaerobic conditions. Which of the following statements about heterocyst which is specialized cell of blue-green algae is incorrect?

#Unit 6. System Physiology – Plant
  1. Anaerobic conditions are created in specialized cells called heterocysts, it appear to represent an adaptation for nitrogen fixation
  2. A heterocyst in a nonfilament of the nitrogen-fixing cyanobacterium Anabaena, which forms associations with the water fern Azolla
  3. Heterocysts are thick-walled cells that differentiate when filamentous cyanobacteria are deprived of NH4 +
  4. These cells lack photosystem II, the oxygen-producing photosystem of chloroplasts, so they do not generate oxygen
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TLS Online TPP Program

#Question id: 3003

#Unit 2. Cellular Organization

Which statement best characterizes the behavior of a bacterial culture during EXPONENTIAL GROWTH?
TLS Online TPP Program

#Question id: 3541

#Unit 8. Inheritance Biology

Blue follower is dominant over white flower and long pollen is dominant over short pollen. A plant with Blue flower and short pollen was cross with white flower and long pollen. All F1 offspring display blue flower and long pollen. What is the percent of F2 progeny showing blue flower and long pollen?
TLS Online TPP Program

#Question id: 19479

#Unit 12. Applied Biology

The Cry proteins are solubilized in which environment of insect midgut and are then proteolytically processed to yield a 60 kDa toxic core fragment?
TLS Online TPP Program

#Question id: 11969

#Unit 7. System Physiology – Animal

What is the importance of the mucus that are released by salivary glands?
TLS Online TPP Program

#Question id: 19198

#Unit 12. Applied Biology

Sensitivity of calorimetric biosensor can be increased by