Biology: The Unity and Diversity of Life (MindTap Course List)
15th Edition
ISBN: 9781337408332
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Textbook Question
Chapter 19, Problem 2CT
The astronomer Carl Sagan once said, "We are made of .star stuff." Explain why this is true of all life on Earth.
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The astronomer Carl Sagan once said, “We are made ofstar stuff.” Explain why this is true of all life on Earth.
What do you call the smallest unit of particle in the universe?
a. Cell
b. Atom
c. Nucleus
d. Matter
The picture below shows the position of Earth and two stars.
Star 1 is 18 light years from Star 2 and 34 light years from Earth. If Star 2 explodes as a supernova, in how many years would the explosion be seen from Earth? (3 points)
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Chapter 19 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 19 - Antibiotic Effects on Mitochondria Tetracyclines...Ch. 19 - Antibiotic Effects on Mitochondria Tetracyclines...Ch. 19 - Antibiotic Effects on Mitochondria Tetracyclines...Ch. 19 - Antibiotic Effects on Mitochondria Tetracyclines...Ch. 19 - Which of the following is NOT true of conditions...Ch. 19 - An abundance of _______ in Earth's early...Ch. 19 - Stanley Miller's experiment demonstrated that...Ch. 19 - According to one hypothesis, negatively charged...Ch. 19 - The prevalence of _______ in living organisms is...Ch. 19 - Prob. 6SQ
Ch. 19 - Among prokaryotes, only the cyanobacteria _______....Ch. 19 - The evolution of _______ resulted in the eventual...Ch. 19 - Evolution of _______ increased the energy...Ch. 19 - Infoldings of the plasma membrane into the...Ch. 19 - The host cell in the endosymbiosis that produced...Ch. 19 - A stromatolite is a structure __________ . a....Ch. 19 - Prob. 13SQCh. 19 - Which of the following events did NOT occur during...Ch. 19 - Chronologically arrange the evolutionary events,...Ch. 19 - Researchers looking for fossils of the earliest...Ch. 19 - The astronomer Carl Sagan once said, "We are made...Ch. 19 - How did the evolution of oxygen-releasing...Ch. 19 - Just as all life shares a last universal common...
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- For a long time, it was believed that life originated from decaying matter. What is this theory known as? Name the scientist who experimentally disproved this theory.arrow_forwardImagine that scientists have found traces of liquid water on the surface of Mars. Could this discovery be indicative of the possible existence of life on the planet? Explain the role liquid water plays in sustaining life.arrow_forwardAre the atoms and basic molecules that compose living things different from the molecules that make up nonliving things? Where were the atoms in living things formed?arrow_forward
- According to Aristotle’s rules, which of the following objects would be suitable for scientific inquiry? a brightly colored snake with one head B. a stationary object with a density of 0 grams/cm3 a moving object with infinite velocity a brightly colored snake with two heads E. a distant star that burns eternallyarrow_forwardAs scientists continue exploring other planets and our solar system, they seek evidence to prove that life has existed. Which molecules should scientists look for?arrow_forwardAlchemists were medieval scholars and philosophers who were the forerunners of modern-day chemists. Many spent their lives trying to transform lead (atomic number 82) into gold (atomic number 79). Explain why they never succeeded.arrow_forward
- The following comments were overheard at the department holiday party. Which of them is NOT a scientific theory? A) Dr. Storm a meteorologist says " this will be an especially warm summer" B) Dr. Quark, an astrophysics says " the universe has been expanding for the past 13.8 billion years" C) Dr. Beaker, a chemist, said "all matter is made up of atoms" D) Dr. Rocks a geologist said "movement and collisions of plates over the earth's surface causes mountain ranges, earthquakes and volcanoes." E) dr.gene a biologist said " all living things are composed of cells"arrow_forwardAccording to the big bang theory, _______. a. the universe expanded out from a single point b. Earth and our sun formed simultaneously c. carbon and oxygen were the first elements to form d. all of the abovearrow_forwardAlchemists were the forerunners of modern-day chemists. Many of these medieval scholars and philosophers spent their lives trying to transform lead (atomic number 82) into gold (atomic number 79). Explain why they never succeeded.arrow_forward
- Stars are objects in space that produce their own heat and light. Where would the greatest number of stars be found?arrow_forwardIf atom is the unit of matter ,how come cell that is unit of life are linked?arrow_forwardAccording to Aristotle’s rules, which of the following objects would be suitable for scientific inquiry? a brightly colored snake with one head B. a stationary object with a density of 0 grams/cm3 a moving object with infinite velocity a brightly colored snake with two heads a distant star that burns eternallyarrow_forward
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