Select your answer:

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Trichology Human Eye and Colorful World Bacteria Cell Structure and Function Concept Bones, Joints and Muscles EMR - Trauma Respiratory Acidosis Eye in Color Vision Digestive System and Nutrition Disease & Immunity Biological Molecules Understanding Psychology Nervous System Lipid Metabolism Discovery of DNA Knee AnatomyOther quiz:
Life Processes › ViewLarge blood vessel that carries blood back to the heart.
A. Artery
B. Capillary
C. Vein
D. Aorta
Genetics: Viruses and Bacteria › View
Transformation occurs when ________________.
A. None of these.
B. a virus injects DNA into the bacterium.
C. a plasmid is transferred from one bacteria to another.
D. bacteria take up DNA from the environment.