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TLS Online TPP Program

#Question id: 277

Which statement is not true about histones?

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. They are positively charged at biological pH.

  2. They only occur in eukaryotes.

  3. Most species that have histones contain five different types.

  4. There is wide variation in the amino acid sequences of histones among species.

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TLS Online TPP Program

#Question id: 28281

#Unit 5. Developmental Biology

Fusion is an active process, often mediated by
TLS Online TPP Program

#Question id: 28282

#Unit 5. Developmental Biology

In sea urchins, which of the following protein plays a second role as a  fusogenic protein? 
TLS Online TPP Program

#Question id: 28283

#Unit 5. Developmental Biology

Following statements are related to fast block to polyspermy, which statement is incorrect?
TLS Online TPP Program

#Question id: 28284

#Unit 5. Developmental Biology

In the Fast block to polyspermy, after the binding of the first sperm, the membrane potential shifts from
TLS Online TPP Program

#Question id: 28285

#Unit 5. Developmental Biology

If the egg cell membrane potential is positive resting potential, then_____
TLS Online TPP Program

#Question id: 28286

#Unit 5. Developmental Biology

Which of the following statement is correct about mechanical block to polyspermy?