BIOLOGY (LL)
11th Edition
ISBN: 9781260451122
Author: Raven
Publisher: MCG
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Textbook Question
Chapter 1, Problem 1S
Exobiology is the study of life on other planets. In recent years, scientists have sent various spacecraft out into the galaxy in search for extraterrestrial life. Assuming that all life shares common properties, what should exobiologists be looking for as they explore other worlds?
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Which of the following was likely MOST important for life to begin existing on Earth?
A.
sunlight
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DNA
C.
a source of oxygen
D.
a source of energy
Which of the following is the last step in the Oparin-Haldane Model for the beginning of life?
a.
Membranes form around the first cells
b.
Simple molecules assembled into building blocks
c.
Polymers assembled from simple building blocks
d.
Asteroids and meteors provide building blocks for life on earth
Which of the following steps has not yet been accomplished byscientists studying the origin of life?(A) synthesis of small RNA polymers by ribozymes(B) formation of molecular aggregates with selectivelypermeable membranes(C) formation of protocells that use DNA to direct thepolymerization of amino acids(D) abiotic synthesis of organic molecules
Chapter 1 Solutions
BIOLOGY (LL)
Ch. 1 - Prob. 1UCh. 1 - Prob. 2UCh. 1 - A hypothesis in biology is best described as a. a...Ch. 1 - Prob. 4UCh. 1 - The cell theory states that a. cells are small. b....Ch. 1 - The molecule DNA is important to biological...Ch. 1 - The organization of living systems is a. linear...Ch. 1 - The idea of evolution a. was original to Darwin....Ch. 1 - What is the significance of Pasteurs experiment to...Ch. 1 - Which of the following is NOT an example of...
Ch. 1 - How is the process of natural selection different...Ch. 1 - If you found a fossil for a modem organism next to...Ch. 1 - The theory of evolution by natural selection is a...Ch. 1 - In which domain of life would you find only...Ch. 1 - Evolutionary conservation occurs when a...Ch. 1 - Exobiology is the study of life on other planets....Ch. 1 - The classic experiment by Pasteur (figure 1.4)...
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