Q:

MPG extension refers usually to what kind of file?

A) MS Office document	B) Image file
C) Word Perfect Document file	D) Animation/movie file

Answer & Explanation Answer: D) Animation/movie file

Explanation:

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Q:

Which protocol does ping use?

A) ICMP	B) TCP
C) BootP	D) ARP

Answer & Explanation Answer: A) ICMP

Explanation:

ICMP means Internet Control Message Protocol and is always coupled with the IP protocol (There are 2 ICMP variants one for IPv4 and one for IPv6.) echo request and echo response are the two operation codes of ICMP used to implement ping.

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Q:

The Nobel Prize for chemistry for the year 2011 has been awarded to

A) Saul Perlmutter,Brain P. Schmid & Adam G. Riess	B) Bruce A.Beutler,Jules A. Hoffmann
C) Christopher A. Sims & Thomas J. Sargent	D) Dan Schechtman

Answer & Explanation Answer: D) Dan Schechtman

Explanation:

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Q:

Amino acids can be distinguished from one another by

A) type of bond between the R group and the rest of the molecule	B) the number of R groups found on the amino acid molecules
C) the chemical properties of their R groups	D) the chemical properties of the amino and carboxyl groups

Answer & Explanation Answer: C) the chemical properties of their R groups

Explanation:

Amino acids are organic compounds containing amine (-NH2) and carboxyl (-COOH) functional groups, along with a side chain (R group) specific to each amino acid.

Depending on the nature of the side chain groups, three classes of aminoacids can e distinguished:

1. Amino acids with H ond donor and acceptor groups.

Histidine, lysine, aspartic acid, threonine,...

2. Amino acids with donor grups only.

Arginine, tryptophan and cysteine.

3. Amino acids with acceptor groups only.

Asparagine and glutamine.

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Q:

Which describes the correct pairing of DNA bases?

A) guanine - cytosine	B) adenine - cytosine
C) guanine - thymine	D) thymine - cytosine

Answer & Explanation Answer: A) guanine - cytosine

Explanation:

The correct pairing of DNA bases among the given options is guanine - cytosine.

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Q:

A symbol that represents a speech sound

A) Phonemes	B) Grapheme
C) Phonics	D) None of the above

Answer & Explanation Answer: B) Grapheme

Explanation:

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Q:

What is the strength of the signal transmitted by powerful cell phones?

Answer

the powerful cell phones can transmit a signal of 3 watts.

Workspace

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Subject: Hardware

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Q:

In which year ' Human Rrights Resolution ' was adopted by the U.N

A) 1945	B) 1946
C) 1947	D) 1948

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