★ Biology Quiz
What type of bonds are present in this diagram?
A. metallic
B. concurrent
C. ionic
D. covalent
Select your answer:

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Cell Cycle › ViewWhy is it crucial that living things are able to replicate their DNA?
A. Each cell must have its own DNA
B. Less copies of DNA are needed when a new cell is created
C. A cell needs multiple copies of DNA
D. Only muscle cells need DNA
Communicable Diseases and Immune Response (OCR) › View
Which type of microorganism causes Black Sigatoka?
A. Bacteria
B. Fungus
C. Virus
D. Protoctista