What Phenomenon Accounts for the Appearance of Chloroplasts in Some

question 3

Multiple Choice

What phenomenon accounts for the appearance of chloroplasts in some unicellular phototrophic eukaryotes?

• A) endosymbiosis
• B) secondary endosymbiosis
• C) sequencing of chloroplasts' SSU genes
• D) horizontal gene transfer

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Definitions:

Fecal Occult Blood Tests

Medical tests used to detect hidden (occult) blood in the stool, an indicator of possible gastrointestinal bleeding.

Otoscope

A medical instrument designed for examining the ear canal and eardrum.

Stethoscope

An instrument used in auscultation to convey to the ear the sounds produced by the body.

Spirometer

A device used to measure the amount of air inhaled and exhaled from the lungs, commonly used in pulmonary function tests.