Which of the following is an accurate point that supports the idea that the earliest protocells relied first on RNA (not DNA) as inherited information? A. RNA is composed of lipids, and lipids were present on early Earth before the nucleotides that compose DNA were B. RNA is a monomer (unlike DNA), so it is simpler and more likely to have been used by these simple protocells C. DNA would have been too large to fit into the small protocells, but RNA was small enough to fit D. RNA can serve dual roles as both genetic information storage and an enzyme (but DNA cannot do both) ..

Which of the following is an accurate point that supports the idea that the earliest protocells relied first on RNA (not DNA) as inherited information? A. RNA is composed of lipids, and lipids were present on early Earth before the nucleotides that compose DNA were B. RNA is a monomer (unlike DNA), so it is simpler and more likely to have been used by these simple protocells C. DNA would have been too large to fit into the small protocells, but RNA was small enough to fit D. RNA can serve dual roles as both genetic information storage and an enzyme (but DNA cannot do both) ..

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter16: Evidence Of Evolution

Section: Chapter Questions

Problem 5SA: In which type of rock are you more likely to find a fossil? a. basalt, a dark, fine-grained volcanic...

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In 40 words or fewer, explain why we think that RNA, and not DNA, was the hereditary material in the first protocell.
In which type of rock are you more likely to find a fossil? a. basalt, a dark, fine-grained volcanic rock b. limestone, composed of calcium carbonate sediments c. slate, a volcanic melted and cooled shale d. granite, which forms by crystallization of molten rock below the surface of the Earth
What is a phylogeny a description of? a. mutations b. DNA c. evolutionary history d. organisms on Earth
In studying a species of fish, a structure is discovered that has no apparent function. If this is a vestigial structure, what would you find in at least some relatives of this fish? Why? * The structure should look different and also have no function. A similar structure should be present, but it would be larger and have a function. The structure should be present and also have no function. No answer The structure should be absent from fossils of ancestors of this species.
What are the two ways of finding the age of a fossil? Describe how relative dating works. What does absolute dating do? Why is the element carbon-14 important for paleontologists? . Developmental Biology - Embryology Many scientists use what an organism looks like as an embryo, or embryology, as evidence for evolution. The embryos of most vertebrates look very similar and have similar structures. For example, fish, bird, rabbit, and human embryos are similar in appearance in early stages. They all have gill slits and a tail with muscles to move it. Later as the embryos develop, they become less and less similar. What does the study of embryology show when comparing most vertebrates?
Organism A lived from 410 to 60 million years ago. Organism B lived from 200 to 100 million years ago. Which organism will be the better index fossil? (1)
Which statement portrays the concept of ontogeny in phylogenetics? option a.) scientist gathers physiological traits and genetic data about a group of endemic monkeys. option b.) Both chick and human embryos go through a stage where they have slits and arches in their necks that are identical to the gill slits and arches of fish. option c.) The progression of morphological forms observed in fossil record is consistent with inferences about the major branches of descent in the tree of life. option d.) Crocodiles have amniotic eggs while rodents and rabbits don't have.
What kind of fossils were formed out of dinosaur remains and activities? Why do you say so? (Give three)
What is the study of fossils called? Mention any three points how the fossils throw light on past life?
Choose the best below ? Which of these steps probably occurred first in the chemical andbiological evolution of life? a. The cell membrane of a protobiont formed.b. Formation of the first organic moleculesc. The genetic material was RNA.d. Simple organic monomers formed from inorganic materials.
Using the phylogeny, which statement best explains the evolutionary relationship of birds and bats? A. C is an example of divergent evolution shows a common ancestor. B. C is an example of convergent evolution does not show a common ancestor. C. A and B are examples of analogous structures derived from a common ancestor. D. A and B are examples of homologous structures that are not derived from a common ancestor.
What do scientists think the primitive Earth was like? Cite at most four pieces of evidence.