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BCH 5413 Exam Questions and Answers: DNA Structure and Function, Exams of Advanced Education

Iowa State University (ISU)Advanced Education

A set of questions and answers related to dna structure and function, covering key concepts such as the discovery of dna, its structure, and its role in gene expression. It includes questions about the differences between ribose and deoxyribose, the number of carbons in purines and pyrimidines, the characteristics of different dna forms (a-dna, b-dna, z-dna), and the role of histones in dna packaging. Useful for students studying biochemistry or molecular biology.

Typology: Exams

2024/2025

Available from 04/16/2025

Smartsolutions
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BCH 5413 1-4 EXAM QUESTIONS AND CORRECT ANSWERS!!
What did Avery, McLeod, and McCartney do? - ANSWER They showed that if DNA is
present, the non-pathogenic R-strain bacteria would transform into an S-strain.
What did Wilkins and Franklin do? - ANSWER Using xray crystallography, they examined
the structure of DNA.
One turn of a DNA helix is ____ angstroms. - ANSWER 34
Ribose differs from deoxyribose by a single
a) C
b) H
c) OH
d) P - ANSWER c)
How many carbons are in purines and pyrimidines? - ANSWER 9 and 6
Covalent bonds are found in ____ and hydrogen bonds in ____. - ANSWER sugar
phosphate backbone, complimentary base pairing
How many hydrogen bonds are between thymine and adenine? - ANSWER 2
Name 3 characteristics of B-DNA - ANSWER * Right-handed helix
* 10bp per helical turn
* Major groove wide and deep
pf3

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Download BCH 5413 Exam Questions and Answers: DNA Structure and Function and more Exams Advanced Education in PDF only on Docsity!

BCH 5413 1 - 4 EXAM QUESTIONS AND CORRECT ANSWERS!!

What did Avery, McLeod, and McCartney do? - ANSWER They showed that if DNA ispresent, the non-pathogenic R-strain bacteria would transform into an S-strain.

What did Wilkins and Franklin do? - ANSWER Using xray crystallography, they examinedthe structure of DNA.

One turn of a DNA helix is ____ angstroms. - ANSWER 34 Ribose differs from deoxyribose by a single a) C b) Hc) OH d) P - ANSWER c) How many carbons are in purines and pyrimidines? - ANSWER 9 and 6 Covalent bonds are found in ____ and hydrogen bonds in ____. - ANSWER sugarphosphate backbone, complimentary base pairing

How many hydrogen bonds are between thymine and adenine? - ANSWER 2 Name 3 characteristics of B-DNA - ANSWER * Right-handed helix* 10bp per helical turn

  • Major groove wide and deep

Name 3 characteristics of A-DNA - ANSWER * Right-handed helix

  • 11bp per helical turn* Major groove narrow and deep

Name 3 characteristic of Z-DNA - ANSWER * Left-handed helix

  • 12bp per helical turn
  • Major groove flattened, nearly gone Fragile DNA is associated with - ANSWER AT-rich cruciform To increase the melting temperature of DNA, you need to increase which two? a) basesb) salt c) phosphate d) ATe) coiling f) GC - ANSWER b) and f) What does the genome consist of? - ANSWER Chromosomes (linear DNA molecules withmany genes)

Exon and intron function - ANSWER Exons are coding regions of the gene Introns hold functional RNAs and micro RNAs True or False? Alternative splicing can yield different proteins. - ANSWER True