24. The earliest RNA probably functioned in A) catalysis. B) self-replication. C) neither catalysis nor self-replication D) both catalysis and self-replication.
24. The earliest RNA probably functioned in A) catalysis. B) self-replication. C) neither catalysis nor self-replication D) both catalysis and self-replication.
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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Question
Transcribed Image Text:24. The earliest RNA probably functioned in
A) catalysis.
B) self-replication.
C) neither catalysis nor self-replication
D) both catalysis and self-replication.
25. LUCA refers to
A) the ancestral cell before the divergence into Eukaryotes and Prokaryotes
B) the ancestral cell before the divergence into Archaea and Prokaryotes
C) the ancestral cell before the divergence into Archaea and Bacteria
D) the ancestral cell before the divergence into Eukaryotes and Bacteria
26. Endosymbiosis between bacterial and archaea
A) Allowed
the evolution of eukaryotic cells with organelles
B) Allowed for the accumulation of ozone in the early atmosphere
C) Occurred after multicellularity evolved
D) Occurred after 3.8 but before 2.5 bya
27. In the sub-surface hypothesis the origination of cellular life on earth occurred in stages.
Which of the following represents conditions likely in the first (oldest) stage:
A) Energetic reactions coupled to molecular replication in mineral compartments
B) Nutrients in hot hydrothermal water
C) Lipid bilayers replace mineral compartients.
D) Mineral pores form first biological compartments.
28. In the sub-surface hypothesis the origination of cellular life on earth occurred in stages.
Which of the following represents conditions likely in the last (most recent) stage:
A) Energetic reactions coupled to molecular replication in mineral compartments.
B) Nutrients in hot hydrothermal water
C) Lipid bilayers replace mineral compartments.
D) Mineral pores form first biological compartments.
29. Chlamyida and Rickettsia are bacterial genera that share the following trait(s).
A) Both are gram positive
B) Both are thermophiles
C) Both are intracellular parasites
D) All of the above
30. The causal agent of Lyme disease is a tick-borne alpha-proteobacteria
A) True
B) False
31. The term Bt Corn refers to the incorporation of the genes from Bacteriodetes
in corn crops
A) True
mai
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