Which of the following statements is correct of BOTH haemoglobin and myoglobin? A. Acidic conditions increase the affinity for oxygen. B. The iron atom of the heme prosthetic group is bound to nitrogen atoms at five of six coordination sites. C. Four oxygen molecules bind to each subunit. D. Quaternary structure is found in both haemoglobin and myoglobin. E. Both haemoglobin and myoglobin show the same oxygen binding affinity at different oxygen partial pressures.

Biochemistry
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ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
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3. Which of the following statements is correct of BOTH haemoglobin and myoglobin?
A. Acidic conditions increase the affinity for oxygen.
B. The iron atom of the heme prosthetic group is bound to nitrogen atoms at five of six
coordination sites.
C. Four oxygen molecules bind to each subunit.
D. Quaternary structure is found in both haemoglobin and myoglobin.
E. Both haemoglobin and myoglobin show the same oxygen binding affinity at different
oxygen partial pressures.
4. The Shine Dalgarno sequence is
A. located in the 50S subunit of ribosome.
B. located on the 16S 1RNA component of the 30S subunit of ribosome.
C. a sequence upstream of the AUG initiation codon on mRNA.
D. a DNA consensus sequence in the promoter region of a gene.
E. a signal for transcription termination.
5. Which of the following molecules has RNA-dependent DNA polymerase activity?
A. DNA polymerase I
B. DNA polymerase III
C. RNA polymerase
D. Ligase
E. Telomerase
6. Paracrine signaling is characterized by ligands that are
A. produced by the cell itself
B. secreted by neighboring cells
C. secreted by distant cells
D. transported to distant cells
E. secreted in inactive form
7. Sickle cell disease results from a point mutation of the
A. a-globin of guanine for glutamine
B. B-globin of valine for glutamate
C. B-globin of histidine for glycine
D. y-globin of proline for tyrosine
E. y-globin of glutamate for guanine
8. SH2 domains in relay proteins specifically bind to
A. Ga-GTP
В. Са+ ions
С. САМР
D. glucagon
E. phosphorylated tyrosine residues in receptor tyrosine kinase
Transcribed Image Text:3. Which of the following statements is correct of BOTH haemoglobin and myoglobin? A. Acidic conditions increase the affinity for oxygen. B. The iron atom of the heme prosthetic group is bound to nitrogen atoms at five of six coordination sites. C. Four oxygen molecules bind to each subunit. D. Quaternary structure is found in both haemoglobin and myoglobin. E. Both haemoglobin and myoglobin show the same oxygen binding affinity at different oxygen partial pressures. 4. The Shine Dalgarno sequence is A. located in the 50S subunit of ribosome. B. located on the 16S 1RNA component of the 30S subunit of ribosome. C. a sequence upstream of the AUG initiation codon on mRNA. D. a DNA consensus sequence in the promoter region of a gene. E. a signal for transcription termination. 5. Which of the following molecules has RNA-dependent DNA polymerase activity? A. DNA polymerase I B. DNA polymerase III C. RNA polymerase D. Ligase E. Telomerase 6. Paracrine signaling is characterized by ligands that are A. produced by the cell itself B. secreted by neighboring cells C. secreted by distant cells D. transported to distant cells E. secreted in inactive form 7. Sickle cell disease results from a point mutation of the A. a-globin of guanine for glutamine B. B-globin of valine for glutamate C. B-globin of histidine for glycine D. y-globin of proline for tyrosine E. y-globin of glutamate for guanine 8. SH2 domains in relay proteins specifically bind to A. Ga-GTP В. Са+ ions С. САМР D. glucagon E. phosphorylated tyrosine residues in receptor tyrosine kinase
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