BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 18, Problem 6SA
By one hypothesis, clay________.
| a. facilitated assembly of early polypeptides |
| b. was present at hydrothermal vents |
| c. provided energy for early |
| d. served as an early genome |
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
The first forms of life on Earth were thought to be_________. a. single-celled plants b. prokaryotes c. insects d. large animals such as dinosaurs
What type of molecule contains the site where amino acids link together to make a polypeptide?
a. DNA
b. mRNA
c. rRNA
d. tRNA
An inborn error of metabolism is when a _____ causes a deficiency in a particular enzyme.
a. genetic change
b. protein deficiency
c. vitamin deficiency
d. viral disease
The fossil record shows how ________________
a. dead organisms were buried
b. organisms have changed over time and when organisms lived on Earth
c. parents of the offsprings
d. evolution occurred
Chapter 18 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 18 - An abundance of___________ in Earths early...Ch. 18 - The first interval of Earths existence is called...Ch. 18 - The prevalence of ironsulfur cofactors in...Ch. 18 - Miller and Urey created a reaction chamber that...Ch. 18 - RNA in ribosome catalyzes formation of peptide...Ch. 18 - By one hypothesis, clay________. a. facilitated...Ch. 18 - Photosynthesis carried out by one group of...Ch. 18 - Mitochondria are most closely related to...Ch. 18 - The presence of ozone in the upper atmosphere...Ch. 18 - A ribozyme consists of ___________. a. clay c. DNA...
Ch. 18 - A rise in oxygen in Earths air and seas set the...Ch. 18 - Which of the following was not present by the end...Ch. 18 - The first chloroplasts evolved from ___________....Ch. 18 - During the Precambrian, _______. a. atmospheric...Ch. 18 - Arrange these events in order of occurrence, with...Ch. 18 - Researchers looking for fossils of the earliest...Ch. 18 - Rickettsia bacteria always live as parasites...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- The first forms of life on Earth were ________. a. plants b. microorganisms c. birds d. dinosaursarrow_forwardLife first appeared on Earth ___________ of years ago.Choose one: A. billions B. hundreds of thousands C. thousands D. millionsarrow_forwardWhich statement about spontaneous generation is false? A. It addresses the formation of living cells from previously nonliving material. B. This was a common belief for during the Middle Ages. C. Pasteur demonstrated that it does not occur under normal laboratory conditions. D. It occurs every time a new species evolves from a preexisting species. E. It apparently occurred at least once – when life on Earth began.arrow_forward
- Which choice correctly shows the relative amounts of non-coding DNA? A. A human has a greater relative amount of non-coding DNA than an elephant. B. An elephant has a greater relative amount of non-coding DNA than a fruit fly. C. A fruit fly has a greater relative amount of non-coding DNA than a bacterium. D. A bacterium has a greater relative amount of non-coding DNA than an archaean,arrow_forwardWhich of the following was likely MOST important for life to begin existing on Earth? A. sunlight B. DNA C. a source of oxygen D. a source of energyarrow_forwardFind the connection among the words below and choose the letter of the word which is different.* 1. A. wells B. migration C. red D. tracking dye 2. A. protein B. DNA C. anode D. blackarrow_forward
- 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. fossiarrow_forwardThe image depicts the anatomical structure of the forelimb of a dolphin and a bat, both mammals. Which Hypothesis are consistent with the evolutionary relationship shown by this image? Select all that apply. A. Bats are more closely related to birds that to dolphins due to the similarity in flight B. Dolphins and bats share a common ancestor that is more recent than the one shared with birds C. Amino Acid sequences for the cytochrome C analysis of these two species will also be similar D. Embryological comparisons of these two species will show homologies with each other than bats have with birdsarrow_forwardWhich result from the Miller and Urey experiment provides evidence that the molecules of life could have spontaneously been produced in the ancient Earth environment? a After their experiment, they produced DNA from amino acids. b They showed how DNA can be produced from simple molecules that included water, oxygen, carbohydrates, and lipids. c Their experiment produced amino acids—the building blocks of life—from chemicals that existed in the environment of ancient Earth. d Miller and Urey's experiment provided evidence that showed that although oxygen was lacking in the environment of ancient Earth, it could be readily made from the decomposition of rocks and minerals.arrow_forward
- For items 6-15 choose the letter of the best answer. No need to write the explanations. 6. How does a cell wall functions as protection for the cell? A. It protects the cell from insects. B. It controls passage of substances C. It maintains cell shape during excess water in cells D. It contains genetic material 7. It is an organelle for assembling ribosomes with genes for rRNA synthesis. A. Chromosomes B. Mitochondria C. Nucleolus D. Ribosomes 8. Why do phospholipids tend to organize into a bilayer in an aqueous solution? A. it hides its tail from water B. It hides its tail like a dog C. It arranges itself like a comb D. Its saturated fatty acids are straight 9. Which of the following matches with a microtubule's function? A. Cellular respiration B. Digestion C. Movement D. Photosynthesis 10. Which structure clearly distinguishes a eukaryote from a prokaryote? A. Chloroplast B. Flagella C. Nucleolus D. Vacuole 11. Which organisms have the smallest size of cells? A. Animals B.…arrow_forwardWhat did the Miller-Urey experiment demonstrate? A. Life originated in outer space and was brought to Earth on a meteor. B. Complex molecules can be formed from water, carbon dioxide, methane, ammonia, and hydrogen gas in a reducing atmosphere. C. Eukaryotic cells evolved from prokaryotic cells following an endosymbiotic event. D. RNA was the genetic storage merial before DNA.arrow_forwardScorpions occupy every continent except Antarctica, and all scorpionsfluoresce under ultraviolet light. What do these observations mostlikely suggest about the origin of scorpion fluorescence?a. The common ancestor of scorpions fluoresced.b. Scorpion fluorescence evolved independently on each continent.c. Scorpion fluorescence is a vestigial characteristic.d. Scorpion fluorescence evolved recently.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
Microorganisms | Genetics | Biology | FuseSchool; Author: FuseSchool - Global Education;https://www.youtube.com/watch?v=YSitT0oOoyc;License: Standard youtube license