★ Microbiology Quiz
What is the structure of purines in DNA nucleotides?
A. A single-ring structure with a six-carbon ring
B. A double-ring structure with a six-carbon ring fused to a five-carbon ring
C. A double-ring structure with two six-carbon rings
D. A single-ring structure with a five-carbon ring
Select your answer:
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Cell & Bond Homeostasis, Nutrition, Digestion & Absorption Eye or Nose Injuries Cell Cycle; Cancer Communicable Disease Musculoskeletal - Clinical Musculoskeletal Anatomy: Knee Nervous and Endocrine System A Treat For Mosquitoes Basics of Cardiology Psychology, Psychiatry, & Social Work Fluid and Electrolytes Integumentary and Musculoskeletal System Blood Donation Bacteria and Protist ReviewOther quiz:
Phlebotomy › ViewAn example of how clinical laboratory test results are used is
A. body mass index
B. cataract screening
C. monitoring cholesterol levels
D. measuring heart rate
Pathology of Respiratory System › View
Difficulty in breathing which progressively worsens over time usually due to Chronic Obstructive Pulmonary Disease (COPD)
A. influenza
B. pneumonia
C. dyspnea
D. tuberculosis