Itai-Itai Disease Resulted from Contamination of the Zintzu River Basin

question 15

Multiple Choice

Itai-Itai disease resulted from contamination of the Zintzu River basin with what types of mine wastes?

• A)cyanide
• B)gold and silver
• C)lead, zinc, and cadmium
• D)acid mine drainage

Interpret gene trees, especially focusing on the evolutionary relationships indicated by rRNA gene sequences.

Examine the role of sex independent from reproduction in protists.

Design experiments to investigate characteristics of photosynthetic protists.

Discuss adaptations and implications of various protists’ features for locomotion, flotation, and effects on ecosystems.

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Definitions:

Nitrogens

A rephrasing of "Nitrogens" would be: Chemical elements with the symbol N, essential for all living organisms as a constituent of proteins and nucleic acids.

HCN Bond Angle

The angle between the hydrogen, carbon, and nitrogen atoms in hydrogen cyanide, typically close to 180 degrees due to its linear molecular shape.

Hydrogen Cyanide

A highly toxic and volatile chemical compound with the formula HCN, characterized by a distinctive bitter almond odor.

Hybridization

The concept in chemistry where atomic orbitals mix to form new hybrid orbitals, which are suitable for the pairing of electrons to form chemical bonds in molecular compounds.