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Anatomy - Muscle Contraction and Growth Respiratory and Urinary Movement and Locomotion Bacteria Organic Compounds, Minerals and Enzymes Biopsychology - Neuroplasticity and Functional Recovery Cellular Respiration Nervous & Endocrine Systems Diabetes Mellitus Gene Cloning The Nervous System and The Senses Macromolecules & Nutrients Levels of Organization Energy and Metabolism Nail Enhancement

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Cell & Bond › View

Radiolabelled DNA was allowed to replicate twice in a nonradioactive environment. Which of the following is true?

A. All the strands will have radioactivity

B. Half of the DNA will have no radioactivity

C. No strands will have radioactivity

D. Three–fourth of the DNA replicated will have radioactivity.

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Mechanical Digestion › View

where did the process of mechanical digestion occurs?

A. occurs in stomach

B. occurs in the mouth (teeth) through a process mastication

C. occurs in alimentary canal

D. occurs in chemical breakdown

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