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TLS Online TPP Program

#Question id: 5567

The cortical reaction of sea urchin eggs functions directly in ________.

#XL - T Zoology

  1. the formation of a fertilization envelope

  2. the production of a fast block to polyspermy

  3. the release of hydrolytic enzymes from the sperm

  4. the generation of an electrical impulse by the egg

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TLS Online TPP Program

#Question id: 27339

#XL - T Zoology

The number of base pair in a single turn of B-form DNA about the axis of the molecule is_____?
TLS Online TPP Program

#Question id: 27340

#XL - T Zoology

The distance spanned by one turn of B form DNA is____?
TLS Online TPP Program

#Question id: 27347

#XL - T Zoology

The width (helical diameter) of the double helix in B-form DNA in nm is______?
TLS Online TPP Program

#Question id: 27349

#XL - T Zoology

Why do bacteria have CRISPR? Check all that apply.
TLS Online TPP Program

#Question id: 27350

#XL - T Zoology

CRISPR can edit DNA. What organisms naturally has CRISPR?
TLS Online TPP Program

#Question id: 27351

#XL - T Zoology

CRISPR-Cas9 is a type of __ system found in bacteria