GBS 707 Week 4 Questions and Correct Answers the Latest Update
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Course
GBS 707
Institution
GBS 707
Which of the following is a TRUE statement?
A. Uracil is the same as thymine except for a single amine group
B. Adenine and guanine are pyrimidines
C. The glycosidic bond links a nitrogen and a carbon atom
D. Deoxynucleosides lack 3' hydroxyl groups
C. The glycosidic bond links a nitrogen and...
Which best describes a plausible mechanism for ADA mutations causing Severe
Combined Immunodeficiency?
A. Immune cells die due to blockage of pyrimidine biosynthetic pathways
B. Adenine buildup in immune cells inhibits ribonucleotide reductase
C. Dihydrofolate reductase is inhibited in immune cells leading to
underproduction of thymine
D. Fluorinated compounds are introduced into DNA killing immune cells
✓ B. Adenine buildup in immune cells inhibits ribonucleotide reductase
Which chemical designation for the following purines is CORRECT?
A. 6 oxy-purine is Guanine
B. 6 amino-purine is Guanine
C. 2 amino-6 oxytocin's purine is Guanine
D. 2 oxy-purine is Guanine
✓ C. 2 amino-6 oxytocin's purine is Guanine
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