Refer to the following diagram in answering the questions for this section on origin of life, in particular, the origin of eukaryotes (LECA = Last Eukaryotic Common Ancestor). Time Estimate Range Bacteria Archaea Calibration Point Range LECA | 1173 (718-1455) | 1100-1200 Red Algae 1006 (631-1279) Opisthokonta 430-450 646 (410-863) Embryophytes 329 (224-349) 310-370 250-260 (Ag-Dm) (Gg-Hs) Bilateria Fungi Red Algae Bryophyta Angiosperms 10. Where do humans map to on this diagram? B) ẩungi C) bryophyta A) bilateria D) opisthokonta 11. Are humans more related to fungi or plants? B) plants C) neither, or both equally A) fungi 12. Are humans more related to the bryophyta or angiosperms? A) fungi C) neither, or both equally B) plants ATP Roles of nucleotides FAD flavin adenine dinucleotide coenzyme nicotinamide adenine dinucleotide s-adenosyl mothinnine .. 13. Above image shows some of the diverse roles that nucleotide-derived compounds play in the cel. This has been used to argue for an RNA-world hypothesis for the origin of life. Is this a credible claim, and if so or not, why or what not? A) Yes. Because the nucleotides code for genetic information in the cell, so one would expect that these molecules would find their way into being incorporated widely throughout biochemistry of life B) Yes. The very early biochemistry of life likely involved nucleotides, acting as information and energy currency, and these compounds were incorporated into other diverse compounds over millions of years. c) Yes. Nucleotides have the greatest molecular fitness, so they occur widely. D) No. There are merely too many nucleotides in the cell, and many of them weasel their way into biochemical reactions they have no business partaking in. E) No. None of these compounds are naturally occurring.

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter13: Diversity Of Microbes, Fungi, And Protists

Section: Chapter Questions

Problem 8RQ: What event is thought to have contributed to the evolution of eukaryotes? a. global warming b....

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I'm very confused about these diagrams. Can anyone tell me how to understand them? Or where to look to find the answers?

ATP
Roles of nucleotides
FAD
flavin adenine
dinucleotide
coenzyme
nicotinamide
adenine
dinucleotide
s-adenosyl
mothinnine ..
13. Above image shows some of the diverse roles that nucleotide-derived compounds play in the cel.
This has been used to argue for an RNA-world hypothesis for the origin of life. Is this a credible claim,
and if so or not, why or what not?
A) Yes. Because the nucleotides code for genetic information in the cell, so one would expect that
these molecules would find their way into being incorporated widely throughout biochemistry of life
B) Yes. The very early biochemistry of life likely involved nucleotides, acting as information and
energy currency, and these compounds were incorporated into other diverse compounds over millions
of years.
c) Yes. Nucleotides have the greatest molecular fitness, so they occur widely.
D) No. There are merely too many nucleotides in the cell, and many of them weasel their way into
biochemical reactions they have no business partaking in.
E) No. None of these compounds are naturally occurring.

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All living organisms have a common source of origin. This has been proven by the theory of evolution.

Evolution has been a slow and gradual process. This equilibrium situation has been attained after millions of years.

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