Answered: The following statements concern…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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16) The following statements concern organisms called stromatolites. Which statements are true and which are false? Correct the false statements.

The oldest fossil stromatolites are between 3.5 and 3.9 billion years old.

No stromatolites are alive today.

Ancient stromatolites were composed of microbial mats layered with sediments.

The first stromatolites could fix CO₂, but they did not produce O₂.

Stromatolites form around deep sea vents.

Another name for stromatolites is “banded iron formations”.

17) Multicellularity is an important evolutionary innovation in the history of life on Earth. For the following statements, designate which is true (T) and which is false (F). Correct the false.

Multicellularity has evolved independently a few times in the history of life.

Multicellular members of domain Eukarya arose through the process of endosymbiosis.

Multicellular organisms have cells specialized for different functions, with each cell type having a unique genetic sequence.

Cell differentiation occurs in unicellular organisms but not in multicellular organisms.

Multicellular organisms are absent from the domain Archaea.

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