The Evolution of Eukaryotic Cells Most Likely Involved ________

question 27

Multiple Choice

The evolution of eukaryotic cells most likely involved ________.

• A) endosymbiosis of an oxygen-using bacterium in a larger bacterial host cell-the endosymbiont evolved into chloroplasts
• B) endosymbiosis of a photosynthetic archaeal cell in a larger bacterial host cell to escape toxic oxygen-the anaerobic archaea evolved into chloroplasts
• C) endosymbiosis of an oxygen-using bacterium in a larger bacterial host cell-the endosymbiont evolved into mitochondria
• D) evolution of an endomembrane system and subsequent evolution of mitochondria from a portion of the smooth endoplasmic reticulum

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Definitions:

Whole Grains

Grains that contain all essential parts and naturally-occurring nutrients of the entire grain seed, including the bran, germ, and endosperm.

Bran

The outer layer of cereal grains removed during the milling process, rich in fiber and nutrients.

Germ

A microorganism, especially one that causes disease; commonly used to refer to pathogens or microbes.

Endosperm

The part of a seed that acts as a food store for the developing plant embryo, usually containing starch with protein and other nutrients.