Biology: Life on Earth
10th Edition
ISBN: 9780321729712
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: Benjamin Cummings
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Textbook Question
Chapter 1, Problem 2AC
How would this textbook's definition of life need to be changed to allow viruses to qualify as life-forms? For prions to be considered alive?
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According to the seven characteristics of life (1- composed of one or more cells, 2- compelx and organized, 3- respond to environment, 4- grow, develop, and reproduce, 5- obtain and use energy, 6- mainatin homeostasis, 7- allow for evolutionary adaptation), are viruses alive?
All the followings are biological acellular entities except: a) Bacteriophages b) Bacteria c)
Viroid d) Virions e) Prions
Which of the following is inconsistent with the central dogma?
a) An RNA molecule that can self-replicate
b) A chromosome that is duplicated before cell division
c) A protein that converts its own amino acid sequence into a DNA sequence
d) A retrovirus (e.g. HIV) that transcribes its RNA genome into DNA inside its
host
e) A gene being translated into a protein
Chapter 1 Solutions
Biology: Life on Earth
Ch. 1 - 1. Organisms respond to _______. Organisms acquire...Ch. 1 - Prob. 2FTBCh. 1 - Prob. 3FTBCh. 1 - An important scientific theory that explains why...Ch. 1 - 5. The molecule that guides the construction and...Ch. 1 - What properties are shared by all forms of life?Ch. 1 - Why do organisms require energy? Where does the...Ch. 1 - Define evolution, and explain the three natural...Ch. 1 - Prob. 4RQCh. 1 - 5. What are some differences between prokaryotic...
Ch. 1 - 6. What basic principles underlie scientific...Ch. 1 - Which kingdom(s) are heterotrophic? Which are...Ch. 1 - What is the difference between a scientific theory...Ch. 1 - 8. What factors did Rudi control for in his open...Ch. 1 - Prob. 10RQCh. 1 - List the steps in the scientific method with a...Ch. 1 - What properties of life does your computer...Ch. 1 - 2. How would this textbook's definition of life...Ch. 1 - 3. Review Alexander Fleming's experiment that led...Ch. 1 - 4. Explain an instance in which your own...Ch. 1 - Provide an example (different from that in the...
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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
- Select all the following statements that are TRUE regarding viruses: □ All viruses are potentially dangerous to humans because any virus can infect any host. □ Viruses are fastidious pathogens that require complex growth media. □ Viruses are noncellular particles that take over the metabolism of a cell to generate more virus particles. □ Viruses are genomes made of RNA and DNA that lack many protein. □ Viruses can infect all other known life forms on earth, from Archaea to humans.arrow_forward(if anyone please help me with all these questions) 2. As eukaryotic cells become more specialized, the nucleus is NOT important as the site of a) DNA synthesis, b) changes in the regulation of genes, c) protein synthesis, d) the transcription of mRNA for protein synthesis, e) DNA mutation. 3. In the evolution of the eukaryotic cell, these cells have key changes that include which of the following: a) These cells reproduce by copying their DNA perfectly each generation. b) They have their DNA in the nucleoid area. c) have adapted the mesosome membrane system of the prokaryote to form a nucleus and an endoplasmic reticulum. d) each new type on new eukaryote cell has its own mesosomes e) none of these are true. 4. The evolution/development of the skeletal system found in the Deuterostomes, is made up of two molecules, Ca+2PO4-2 and collagen These molecules are produced released from by a specialized type of stem cell. Therefore, one would expect that these stem cells perform which…arrow_forwardContrary to human cells, most bacteria and viruses both have which of the following? A) Presence of a cell wall B) Presence of a nucleus C) Higher rate of genetic mutations D) Absence of replication capacitiesarrow_forward
- When Wimmer and coworkers announced that they had synthesized the poliovirus, they created considerable controversy. Some people feared that deadly and highly contagious viruses might be synthesized by bioterrorists. The researchers responded that they were merely applying current knowledge and techniques to demonstrate the principle that viruses are basically chemical entities that can be synthesized in the laboratory. Do you think scientists should synthesize viruses or other agents that can cause infectious disease? What are the implications of forbidding such research?arrow_forwardWhich of the following is inconsistent with the central dogma? a) An RNA molecule that can self-replicate O b) A chromosome that is duplicated before cell division Oc) A protein that converts its own amino acid sequence into a DNA sequence O d) A retrovirus (e.g. HIV) that transcribes its RNA genome into DNA inside its host O e) A gene being translated into a proteinarrow_forwardWhich of the following statements about viruses is true?a) They contain DNAb) They contain RNAc) They contain proteind) They are susceptible to lipid solventsarrow_forward
- Which of the following highly contagious viruses is a single-stranded ribonucleic acid (RNA) virus with a helical capsid and envelope and is transmitted by coming in contact with respiratory secretions? "This is a highly contagious respiratory illness transmitted when an infected person coughs or sneezes virus particles into the air," the health department said in a written statement. "It's so contagious that if one person is sick and spreading measles, nine out of 10 people around them who aren't immune will get it, too." Group of answer choices a. Measles b. Parvovirus c. Coxsackie virus A d. Rhinovirusarrow_forward1) Evolution describes the change of the genetic makeup of __________ A)a population. B)an individual. C)a species. D)a cell 2) Which of the following would not be classified as a eukaryote? A)bacteria B)protista C)animals D) fungi E)plants 3) Which of the following is not a domain of life? A)Animalia B)Bacteria C)Archaea D)Eukaryaarrow_forwardgained notoriety when they were implicated in brain infections, such as what is popularly known as mad cow disease. A) O Prions B) O Viroids C) O Viruses D) O Bacteria E) O Virionsarrow_forward
- 9) Identify most mistaken (wrong) choice: a) Bioremediation is the process by which microorganisms can be used to clean up toxic wastes. Ob) Some bacteria can survive very low temperatures. c) Both prokaryotes and eukaryotes have ways of protecting themselves against free radicals. d) Viruses can easily replicate in chemically defined mediaarrow_forwardConjugation differs from reproduction because conjugation: O A) replicates DNA B) transfers DNA vertically, to new cells O C) transfers DNA horizontally, to cells in the same generation D) transcribes DNA to RNAarrow_forwardWhich of the following is not a domain in the three-domain system?Question 1 options: a) Archaea b) Eukaryotes c) Fungi d) Bacteriaarrow_forward
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What Is A Virus ? ; Author: Peekaboo Kidz;https://www.youtube.com/watch?v=YS7vsBgWszI;License: Standard YouTube License, CC-BY