Which of the following 1-C unit:carrier pairing is/are correct? a.biotin:C02 b.THF:-CH2- c.THF:CHO d.S-adenosylmethionine:-CH3
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Which of the following 1-C unit:carrier pairing is/are correct?
a.biotin:C02
b.THF:-CH2-
c.THF:CHO
d.S-adenosylmethionine:-CH3
Step by step
Solved in 2 steps
- Which of the following does cytosine pair with? a. guanine b. thymine c. adenine d. a pyrimidineSickle cell disease results from a point mutation of the ______. α-globin of guanine for glutamine β-globin of valine for glutamate β-globin of histidine for glycine γ-globin of proline for tyrosine γ-globin of glutamate for guanineThe study of the b-globin gene helped establish the one gene-one polypeptide relationship. Which of the following statements related to the b-globin gene study is true? a. all mutations in the b-globin gene lead to sickle cell disease b. some mutations in the b-globin gene lead to sickle cell disease c. all mutations in the b-globin gene altered the b chain in hemoglobin
- A researcher was studying red blood cells from a patient homozygous for the sickle cell mutation in the B-globlin gene (BE6V). She found that increasing the concentration of one of the following chemicals decreased the frequency of sickling by these cells. What chemical is this most likely to be and why? A. 2,3 BPG B. Fe2+ C. glucose D. histidine E. O2The figure below shows the structures of the blood group antigens O, A and B.List all nucleotide sugars and glycosyltransferase enzymes that are needed to construct blood group antigen A.Which of the following does cytosine pair with?a. guanineb. thyminec. adenined. a pyrimidine
- Which of the following statement(s) is/are FALSE for hemoglobin? A Demonstrates positive cooperativity and can bind up to four O2 molecule. B It exhibits the 4 levels of protein structure. C It is a trimer with 2 α-helices and 1 β-sheet. D It is an allosteric protein.S-adenosylmethionine is an activated carrier molecule that transfers which of the following groups? the carboxylic acid group (with one carbon) the phosphate group (with zero carbons) the glucose group (with six carbons) the methyl group (with one carbon) the acetyl group (with two carbons)In the deoxy state of HB, which of the following does not occur? a) An inter-chain salt bridge between Histidine 146 and Lys 40 b) An intra-chain salt bridge between Val 98 and Tyr 145. c) An intra-chain salt bridge between Histidine 146 and Aspartate 94 side chains d) A peptide bond between Tyr 145 and His 146.
- Which of the following is most likely to be an RNA nucleotide? a. Adenosine-5'-triphosphate b. Uridine-5'-monophosphate c. Deoxythymidine-5'-monophosphate d. Deoxyguanosine-5'-monophosphate e. DeoxyadenosineWhy can’t a G bind to T? How would the appearance of DNA change if A could bind to G, and T to C?The source of C8 in adenine is from A. Glycine B. Aspartate C. Glutamine D. Formate