★ DNA Structure, Replication, Proteins Quiz
What is the structure of DNA often compared to?
A. Ladder
B. Spiral staircase
C. Straight line
D. Circle
Select your answer:

Topics:
Skin Diseases Cell Division Fats and Coronary Heart Disease Head and Neck Anatomy Vitamin Eco Factors & Bacteria Shoulder Transportation Histology Histology: Cell & Epithelial Tissue Erythrocyte Disorders Diseases of Digestive System Corona CNA Introduction Macromolecules and EnzymesOther quiz:
Bacteriology › ViewAn organism has an optimal growth rate when the hydrogen ion concentration is very high. This organism is
A. osmotolerant
B. acidophile
C. nuetrophile
D. aerotolerant anaerobe
Digestive System › View
The human body needs a constant supply of protein to survive. The first organ of the digestive system that begins digesting protein chemically is the _____.
A. Duodenum
B. Esophagus
C. Stomach
D. Mouth