Which of the following represent issues of great uncertainty regarding early Earth?Choose one or more:✓ A. whether early life forms were thermophiles or psychrophilesB. whether first life was prokaryotic or eukaryoticC. whether life evolved here or was of extraplanetary originD. whether first organisms were aerobes or anaerobesO E. role of methanogens and atmospheric methane

All of the above choices (A, B, C, D, and E) represent issues of great uncertainty regarding early…

Answered: Which of the following represent issues…

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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Similar questions

What is meant by the term fossil fuel? a. In order to obtain energy from these fuels, a technique known as fossilization must be used. b. The fuel was formed from ancient plant and animal life, representations of which are sometimes found as fossil imprints. C. The fuel itself must be taken from older rock samples that frequently contain embedded fossil remains. 7.
Which of the following statements about the current classification scheme for all life on this planet are true (note, there are more than one correct answer). O The closest relatives to the Animal Kingdom which includes humans are the Fungi OThe taxonomic system arranges organisms from the most primitive, like fungi and bacteria, to the most advanced, like humans O All life can best be separated into 3 Domains: Bacteria, Archaea and Eukarya O All life can best be separated into 5 main Kingdoms: Plants, Animals, Fungi, Bacteria and Protists O All life can best be separated into 6 main Kingdoms: Plants, Bacteria, Archaea, Animals, Fungi, Protists and Plants Show all Ailler Chapter 2.pdf 11:05 PM 1/17/2021 P Type here to search
If the evolution of life was placed on a 24 hour clock, when did humans arrive? a. At the 30 minute mark. b. 1 minute into the beginning c. Less than 1 secong to do ( to the end) d. Right at the ver start
A. How old is the Earth? B. How long did the longest eon (so far) last? C. How many years ago did the most recent epoch begin? D. How many mass extinction events has the Earth witnessed so far?
List three locations where the building blocks of Earth’s first lifemay have formed
Explain how archae are more closely related to Eukarya than to bacteria even though Archae are related. Explain fully a. both are bacteria b. both have cells c. both have nucelus d. both are prokaryotes
Life first appeared on Earth ___________ of years ago.Choose one: A. billions B. hundreds of thousands C. thousands D. millions
Which of the following events are possible sources of high levels of iridium in sediments? Write 'yes' or 'no' next to each of the four possibilities. There may be more than one 'yes' response. 4. An asteroid impact Rain Fossilized foraminifera A supernova
Scientists hypothesize that very simple cells could have arisen through four steps. Place thos 4 steps in the correct order 1 V [ Choose ] The abiotic synthesis of small organic molecules The origin of a self-replicating molecule that eventually made inheritance possible. 2 The joining of small molecules into polymers. The packaging of molecules into early cells with membranes maintained by an internal chemistry. 3 [ Choose ] [ Choose ]
Approximately when did life first appear on land A. 500 million years ago B. 2 billion years ago C. 700 million years D. 1.5 million years ago
27. Which term describes any ancient remains, impressions, or traces of an organism or traces of its activity that have been preserved in rocks or other mineral deposits in Earth's crust? a. analogous feature b. homologous feature c. mutation d. fossi
The Miller experiment consisted of various gases, believed to have been present in the early atmosphere of Earth, exposed to an electrical arc. This experiment resulted in a. nothing. b. carbon dioxide gas and water vapor. c. amino acids. d. rain.

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