Exam (elaborations)
Chem 464 Ch. 6 HWK Questions answers latest update
- Course
- CHEM 464
- Institution
- California State University - Northridge
Chem 464 Ch. 6 HWK Questions answers latest update
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Chem 464 Ch. 6 HWKA nucleotide can be called a nucleoside-5'-phosphate T/F - True
The sugar pucker is___ in the ___form.
A) C2'-endo; A-DNA
B) C3'-endo; B-DNA
C) C2'-endo for pyrimidines and C3'-endo for purines:Z-DNA
D) C2'-endo for purines and C3'-endo for pyrimidines:B-DNA - C) C2'-endo for
pyrimidines and C3'-endo for purines:Z-DNA
The linkage between individual nucleotides in a polymer of DNA is known as a
phosphodiester bond. T/F - True
What group is attached to the pyrimidine ring in thymine and is NOT present in
uracil?
A) NH2
B) CH3
C) ribose
D) deoxyribose - -CH3 (methyl)
, Which of the following statements is NOT a feature of the Watson-Crick model of
DNA.
A) two strands of DNA are parallel
B) Two strands of DNA each form a right-handed helix
C) bases occupy the core of the helix
D) surface of the double helix contains two grooves of unequal width: the major
and minor grooves - A) two strands of DNA are parallel
How did Avery, Maclead, and McCarthy demonstrate that DNA carries genetic
info in 1944?
A) they developed a method to determine the sequence of DNA
B) They cloned genes and expressed them in vitro
C) They showed that extracted DNA from a pathogenic bacterial strain could
transform a nonpathogenic strain into a pathogenic one
D) they cloned genes and expressed them in a bacterial hose - C) They showed
that extracted DNA from a pathogenic bacterial strain could transform a
nonpathogenic strain into a pathogenic one
Heat-denatured DNA exhibits____UV absorbance, which is called the _______.
A) increased; hyperchromic effect
B) increased; hypochromic effect
C) decreased; hyperchromic effect
D) decreased; hypochromic effect - A) increased; hyperchromic effect
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