★ Microbiology Quiz
According to Watson and Crick’s model, what forms the “rungs” of the DNA helix ladder?
A. Sugar-phosphate backbones
B. Purines and pyrimidines
C. Major and minor grooves
D. Antiparallel strands
Select your answer:

Topics:
Food and Health & Bones and Muscles Infant Nutrition Pathogens Immunology and Serology Pathology of Respiratory System Environment Muscle Tissues Consciousness and Sleep Leaves Ear/Eye Medical Terms Principle of Health Science Bacteriology Lab Culture Media Dermatology Stem Cells & Cell Differentiation History of PsychologyOther quiz:
Energy and Metabolism › ViewWhat is the requirement of all metabolic processes?
A. Water
B. Energy
C. Protein
D. Vitamins
Urinary System › View
Which are the tubes that carry urine from the kidney to the bladder?
A. Adrenal tubes
B. Kidneys
C. Ureters
D. Urethras