Biology: Life on Earth with Physiology (11th Edition)
11th Edition
ISBN: 9780133923001
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 3.5, Problem 1CSC
Puzzling Proteins
All cells use DNA as a blueprint for producing more cells, and viruses use either DNA or RNA. Before the discovery of prions, however, no infectious agent had ever been discovered that completely lacked genetic material composed of
In addition to lacking genetic material, prions also lack another component that all other infectious agents possess: a surrounding membrane. What kinds of molecules are involved in the construction of membranes?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
11. please fill in the blanks
O
O
O
A new virus is discovered. Its RNA genome encodes several proteins, including a reverse
transcriptase enzyme. What can you conclude about replication of this virus?
Its replication involves a double-stranded RNA intermediate
Its replication involves a DNA copy of its genome
Its replication depends entirely on cellular enzymes
Its replication is entirely independent of cellular enzymes
00
A deficiency in Base Excision Repair (BER) would primarily sensitize you to mutations
caused by
radiation, X-rays
O Chemicals in smoke, and UV radiation
O Unavoidable, spontaneously occurring DNA damage
You are studying a new retrovirus. The viral protein (X) appears to play a role in the export of the viral genomes to the
cytoplasm. Protein X brings viral DNA to the cytoplasm and returns back to the nucleus after genome export is complete.
Researchers have developed a new drug for the virus. Following treatment with the new drug, the viral protein stays in the
nucleus and cannot export the viral genomes. What is the most plausible and logical function of the drug? Use your
knowledge of nuclear transport to answer this question.
O A. The drug inhibits the binding of the viral protein and the viral genomes to the import receptor.
B. The drug inhibits the binding of Ran-GTP to the nuclear export receptor in nucleus.
C. The drug promotes the Ran GAP activity.
D. The drug blocks the NLS on the viral protein.
Chapter 3 Solutions
Biology: Life on Earth with Physiology (11th Edition)
Ch. 3.1 - define organic molecules and explain why carbon is...Ch. 3.1 - which of these is/are polar molecules? (you may...Ch. 3.1 - explain why functional groups are important in...Ch. 3.1 - name and describe the properties of seven...Ch. 3.2 - define organic molecules and explain why carbon is...Ch. 3.3 - describe the major types of carbohydrates?Ch. 3.3 - A 19-year old 6' 2' male weighing 297 pounds comes...Ch. 3.3 - Describe hydrolysis of this molecule.Ch. 3.3 - provide examples of each type of carbohydrate and...Ch. 3.4 - Infectious prions such as those that cause mad cow...
Ch. 3.4 - describe protein subunits and how proteins are...Ch. 3.4 - Look up the rest of the amino acids and. based on...Ch. 3.4 - explain the four levels of protein structure and...Ch. 3.4 - Why do many proteins, when heated excessively....Ch. 3.4 - list several functions of proteins and provide...Ch. 3.4 - describe the properties of Intrinsically...Ch. 3.5 - Puzzling Proteins All cells use DNA as a blueprint...Ch. 3.5 - describe the general structure of nucleotides?Ch. 3.5 - Why a Perm Is (Temporarily) Permanent?Ch. 3.5 - list three different functions of nucleotides?Ch. 3.5 - explain how nucleic acids are synthesized?Ch. 3.5 - give two examples of nucleic acids and their...Ch. 3.6 - Prob. 1CSRCh. 3.6 - FIGURE 3-22 Synthesis of a triglyceride...Ch. 3.6 - compare and contrast the structure and synthesis...Ch. 3.6 - An obese 55-year-old woman consults her physician...Ch. 3.6 - What kind of reaction breaks this molecule apart?Ch. 3.6 - why are steroid hormones able to diffuse through...Ch. 3.6 - describe the functions of fats, oils, and waxes?Ch. 3.6 - Why are steroid hormones able to diffuse through...Ch. 3.6 - Prob. 3CYLCh. 3 - Based on their structure, sketch and explain how...Ch. 3 - In organic molecules made of chains of subunits,...Ch. 3 - Polar molecules a. dissolve in lipids. b. are...Ch. 3 - Prob. 1RQCh. 3 - Prob. 2ACCh. 3 - Prob. 2FIBCh. 3 - Prob. 2MCCh. 3 - List the four principal classes of biological...Ch. 3 - Prob. 3ACCh. 3 - Prob. 3FIBCh. 3 - Prob. 3MCCh. 3 - Prob. 3RQCh. 3 - Prob. 4FIBCh. 3 - Which of the following is not composed of...Ch. 3 - Prob. 4RQCh. 3 - Fill in the following with the appropriate type of...Ch. 3 - Prob. 5MCCh. 3 - Prob. 5RQCh. 3 - Describe the synthesis of a protein from amino...Ch. 3 - Where in nature do we find cellulose? Where do we...
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
- MRSA has emerged as a serious infectious disease, with the first case of methicillin-resistant S. aureus being detected in 1961. Why are medical professionals so concerned when antibiotics exist that can kill MRSA? MRSA can transfer methicillin-resistance to other bacteria Patients are not treated with correct antibiotics rapidly enough to prevent serious illness MRSA could acquire additional antibiotic resistance genes from other bacteria to become a “super bug." All of the above.arrow_forwardWhich statement is true of viroids? They are single-stranded RNA particles They reproduce only outside of the cell They produce proteins They affect both plants and animals.arrow_forwardViruses display many of the characteristics of living organisms. In particular, they reproduce, creating new virus particles. During reproduction, viruses make copies of their genetic material, and some of the copies contain mutations that are beneficial to the virus. For example, HIV (human immunodeficiency virus), the virus that causes the disease AIDS (acquired immunodeficiency syndrome) mutates so often that its surface proteins change faster than we can develop antiviral drugs. New drug-resistant strains of HIV are appearing constantly. However, viruses can reproduce only after entering a living cell of an organism, because viruses hijack the cell’s machinery and use it to produce new viruses. Where does that combination of characteristics place viruses on the scale of nonlife to life? Are viruses living organisms? Nonliving? If neither of those categories fits the properties of viruses, how should they be classified?arrow_forward
- No explanation needed just the letter of correct answer 2. DNA in cells is damaged: a) Millions of times a day. b) By collisions with other molecules or by chemical accidents and radiation. c) Not very often¸ and by radiation only. d) a and b 3. For genes that code for proteins, which molecule conveys the information from the gene to the ribosome? a) DNA b) mRNA c) tRNA d) rRNA 4. Which of the molecules below is produced during replication? a) mRNA b) rRNA c) tRNA d) DNA 5. Why is there a difference between the synthesis of a lead strand and that of a discontinuous strand in DNA molecules? a) The origins of replication are found only at end 5' of the molecule. b) Helicase and protein factors act at the extremity of 5'. c) DNA polymerases can only add new nucleotides at the extremity 3' a strand in the process of synthesis. d) DNA ligase only works in the 3' ; direction towards 5'. 6. Which of the following statements does not apply to a codon? a) It is made up of three nucleotides. b)…arrow_forward1. What are the similarities and differences between Bacterial Chromosomes & Eukaryotic Chromosomes? 2. What types of Plasmids are there and what advantage does each provide for the organism they are in? 3. What is the Central Dogma of Biology / Genetics? Transcription and translation takes place simultaneously 4. What is DNA Replication? Taking DNA and making a copy DNA is not a component of central dogma 5. What are the key stages, components, & enzymes involved in DNA replication? (Make sure you can tell the story) 6. What do the following terms mean/refer to? Semiconservative, Antiparallel, 5’-3’ Polymerization, dNTP’s, Bi-Directional Replication, Leading Strand, Lagging Strand, Continuous Replication, Discontinuous Replication, Methylation, Origin of Replication, Okazaki Fragments 7. What are the key stages, components, & enzymes involved in Transcription? (Make sure you can tell the story)arrow_forwardThe 1918 influenza strain killed millions of people world-wide. After recovering the virus from preserved lung tissue and sequencing the genome, which of the scientific findings did NOT account for the viruses lethality in humans? The hemagglutination protein was associated with high lung damage. The virus came directly from birds, without first circulating in pigs. The virus was independent from a cellular protease for cell entry, and utilized neuraminidase instead. The virus came from bats.arrow_forward
- Which feature (antibiotic target) of bacteria seems to be the most resistant to antibiotics? Why might that be?arrow_forwardHelp mearrow_forward3) It is now 2085 and the world is experiencing another pandemic viral infection. The scientist that discovers the virus, purifies out the genetic information and learns that it has a sequence that is: 26% Cytosine 21% Adenine 28% Uracil and 25% Guanine What sort of genetic information does this new virus have? DNA or RNA? Single or Double Stranded? Explain how you know!arrow_forward
- A bacteriophage has inserted its DNA into a bacterial host and replicated as a part of the host’s genome for several generations as the host reproduces. For this virus to assemble more infectious viral particles, what must it do? Switch to the lysogenic cycle of replication Switch to the vicious cycle of replication Purposefully mutate its own genes Switch to the lytic cycle of replicationarrow_forwardThe DNA and RNA polymerases of viruses are typically more prone to making errors in the polymerization than are regular cellular polymerases. Why would be viruses be more tolerant of errors than are cells?arrow_forwardChapter 21 retrovirus Question - Multiple Choice Part A Do all viruses that contain RNA also have reverse transcriptase? Yes, all RNA viruses are retrovirus. No, some RNA viruses use the host machinery to make protein, but, no viral DNA is ever made. Yes, the only way to make replicate an RNA virus is to reverse transcribe the RNA into DNA. No, some RNA viruses also have DNA and do not need reverse transcriptase Yes, Reverse transcriptase is an enzyme in all viruses. Submit Request Answerarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Human Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage Learning
Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning
Biology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage Learning
Biology: The Unity and Diversity of Life (MindTap...BiologyISBN:9781337408332Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa StarrPublisher:Cengage Learning
Biology: The Unity and Diversity of Life (MindTap...BiologyISBN:9781305073951Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa StarrPublisher:Cengage Learning
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Human Heredity: Principles and Issues (MindTap Co...
Biology
ISBN:9781305251052
Author:Michael Cummings
Publisher:Cengage Learning
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning
Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Cengage Learning
Biology: The Unity and Diversity of Life (MindTap...
Biology
ISBN:9781337408332
Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:Cengage Learning
Biology: The Unity and Diversity of Life (MindTap...
Biology
ISBN:9781305073951
Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:Cengage Learning
genetic recombination strategies of bacteria CONJUGATION, TRANSDUCTION AND TRANSFORMATION; Author: Scientist Cindy;https://www.youtube.com/watch?v=_Va8FZJEl9A;License: Standard youtube license