The probability of rolling one die and obtaining a four. To calculate the probability of rolling a die twice and obtaining 2 fours, What is the probability of rolling a four on both is?

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#Question id: 1711

#Unit 4. Cell Communication and Cell Signaling

On entering a germinal center, the primary B-blasts grow exponentially to form which cell type in the dark zone?

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#Question id: 1334

#Unit 4. Cell Communication and Cell Signaling

Flattened, two-dimensional protrusion of membrane, supported by a meshwork of actin filaments, that is extended from the leading edge of crawling epithelial cells, fibroblasts, and some neurons is known as

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#Question id: 12840

#General Aptitude

If D, E and F are the mid–points of the sides of an equilateral triangle ABC, then the ratio of the area of triangle DEF and DCF is :

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#Question id: 2439

#Unit 2. Cellular Organization

α- and β-tubulin

a. are highly conserved.                                 

b. bind GTP.

c. hydrolyze GTP to GDP.                 

d. are found in all eukaryotes.

e. are related to the bacterial protein FtsZ.

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#Question id: 3014

#Unit 2. Cellular Organization

Regarding prokaryotic reproduction, which statement is correct?