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Bio Exam 3 > Module 6 Molecular Biology Pt 1 > Flashcards

Module 6 Molecular Biology Pt 1 Flashcards

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Biology 101 flashcards
1
Q

Which one of these nitrogenous bases is not a component of DNA?

A

Uracil

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2
Q

Which one of the nitrogenous bases is not a component of RNA?

A

Thymine

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3
Q

What is the pentose sugar component of DNA?

A

Deoxyribose

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4
Q

What is the pentose sugar component of RNA?

A

Ribose

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5
Q

The Sugar-Phosphate backbone of DNA is formed from which of the following bonds connecting the nucleotide polymer?

A

Phosphodiester Bond

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6
Q

The base pairing between nitrogenous bases of the DNA double strand is formed by which of the following bonds?

A

Hydrogen Bond

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7
Q

How many hydrogen bonds form between an Adenine and a Thymine in DNA?

A

2

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8
Q

How many hydrogen bonds form between a cytosine and guanine?

A

3

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9
Q

The model of DNA replication that allows a parent strand to base pair with the newly synthesized daughter strand is called

A

semi conservative

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10
Q

Which one of these enzymes during prokaryotic DNA replication unwinds the double stranded DNA helix?

A

Helicase

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11
Q

Which one of these enzymes during prokaryotic DNA replication seals the Okazaki fragments (lagging strand) to create one continuous strand?

A

Ligase

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12
Q

How many start codons are available in the genetic code?

A

1

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13
Q

How many stop codons are available in the genetic code?

A

3

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14
Q

Which one of these point mutations result an amino acid substitution?

A

Missense mutation

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15
Q

The Transcription Start Site of a protein coding gene is referred to as the

A

+1 site

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16
Q

what is the proper order of events for gene transcription.

A

Initiation, Elongation, and Termination

17
Q

What is the proper order of events for gene translation.

A

Initiation, Elongation, and Termination

18
Q

Polysome is the arrangement of

A

Multiple ribosomes simultaneously translating a single mRNA transcript

19
Q

Nucleolus is the site of

A

rRNA biosynthesis

20
Q

Protein coding genes are transcribed by

A

RNA Polymerase II

Bio Exam 3 (4 decks)

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