Which of the following phases of the cardiac cycle follows immediately after the beginning of the QRS wave?

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#Question id: 2808

#Unit 2. Cellular Organization

A microsatellite is a type of polymorphism that

a. results from the change of a single nucleotide.

b. changes the recognition sequence for a restriction enzyme.

c. results from a variable number of repetitive sequences.

d. results from a chromosomal inversion.

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#Question id: 1424

#Unit 4. Cell Communication and Cell Signaling

Gain-of-function mutations in which of the following genes typify colorectal carcinomas?

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#Question id: 4251

#Unit 3. Fundamental Processes

Which of the following statements correctly describes the effect a nonsense mutation would have on a gene?

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#Question id: 800

#Unit 1. Molecules and their Interaction Relevant to Biology

Following table lists the two major forms of DNA duplexes, conformation of base attached to the sugar and the nature of major and minor grooves.

DNA duplex	Properties
(A)  A form	(i) Syn conformation of the base to sugar
(B)  B form	(ii) Anti conformation of the base to sugar
	(iii) Wide major groove
	(iv) Narrow major groove
	(v) Wide minor groove
	(vi) Narrow minor groove
	(vii) C-3’ endo sugar puckering
	(viii) C-2’ endo sugar puckering

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#Question id: 33476

#Unit 2. Cellular Organization

Find true and false statements

A. The structures of eukaryotic genes show extensive variation. 

B. Some eukaryotic genes are uninterrupted and their sequences are colinear with those of the corresponding mRNAs. 

C. Most multicellular eukaryotic genes are interrupted, but the introns vary enormously in both number and size.