which of the following statements accurately describes viruses?

answer choices Viruses can eat and metabolize food. f. CD40 ligand. Viruses are very diverse. - political or economic interest related to the hazard. Detoxification - Liver It may last a few seconds or a few hours. How would the affect the HIV infection cycle? d) Double-stranded RNA viruses A mutation in the gene encoding the integrase enzyme (the protein that inserts the dsDNA into a host cell's DNA) renders the protein non-functional. c. Both membranes consist of two concentric phospholipid bilayers, are selectively permeable, and have pores. 13-38 The mode of evolution responsible for the production of recombinant influenza viruses composed of a genome derived from two different influenza variants is called _____. b. respiratory syncytial virus c. receptor-mediated endocytosis. A piece of dialysis tubing has been filled with a cloudy white solution of 5 percent starch, 5 percent egg albumin (protein), and 5 percent glucose (a small sugar) dissolved in water to simulate a cell. a) Vertical transmission is transmission of a virus from a parent plant to its progeny, and horizontal transmission is one plant spreading the virus to another plant. Ospreys eat larger fish. d. phagocytosis. - Diet-related obesity can lead to illnesses such as diabetes and cardiovascular disease. The radish cells were hypertonic to the water in which they were soaking. a. is the place where a cell's genetic material is stored. b. fall below the CD8 T-cell count The idea that a small amount of radiation may stimulate DNA repair, whereas a large amount of radiation causes cancer, is an example of _____________________. c. varicella-zoster Editors select a small number of articles recently published in the journal that they believe will be particularly interesting to readers, or important in the respective research area. The plasma membrane of some white blood cells contain ________ that bind with proteins of cells such as bacteria that have invaded the human body. Large molecules are always excluded from crossing the membrane. True or false: Mortality refers to being ill, whereas morbidity refers to dying from a disease. c - Dose must be above a threshold level before anyone in the population shows a response which suggests the presence of some defense mechanism against the harmful effects of the toxin. When the toxic burden of organisms at a lower trophic level is accumulated and concentrated by a predator in a higher trophic level it is called ______. a. transport proteins c. They do not readily mix with the hydrophobic tails forming the core of the phospholipid bilayer; therefore, they must move across by facilitated diffusion. c. the ER lumen. Regulators struggle with how to set acceptable pollution levels based on the dose-response curve because ______. a. osmosis. d. Liposomes form from phospholipid bilayers and provide a barrier between an external environment and an internal environment; this creates an internal environment where specific chemical reactions needed to establish a living cell can occur separately from the external environment. Q. Students use a microscope to look for structures present in four different cells. You isolate an infectious substance that is capable of causing disease in plants, but you do not know whether the infectious agent is a bacterium, virus, or prion. a. CD18; produce cell adhesion molecules - personal ignorance about the hazard - Mutagens are agents such as chemicals or radiation that damage DNA. 13-41 Trypanosomes escape from adaptive immunity by altering the type of _____ expressed on the parasite surface. III. The Zika virus is most commonly transmitted by. d. The RBCs were hypertonic to the saline; this resulted in water osmosing through the RBC plasma membrane mostly into the cells. Lead was banned from gasoline and paint in the 1970s and health problems associated with its exposure have dropped significantly since then. Because organs such as your skin and liver make frequent repairs, they are also more likely to ______. c. the cytosol b. This is an example of a. classical; alternative pathways of complement Microbes acquire resistance to antibiotics through different processes that include random mutations and ______________ reproduction. d. Certain solutes move freely across the membrane by simple diffusion while others must be helped across by active or passive transport proteins; some substances are completely excluded from crossing the membrane. Which of the following statements accurately describes a difference between viruses and bacteria? b. the cytosol; escaping from the phagosome Question 1. Which of the statements below accurately captures the relationship between toxicity and potency? b. sorts proteins and lipids and sends them to their final destination. Your muscle cells need large amounts of ATP to function in the movement of your body. b. c. They are acellular. What do you expect to happen to the weight of the cell over time and what can you deduce from the color change? c. The water will mostly move from side "A" to side "B" because the water concentration is higher on side "B." a. mitochondria This study was reported . a. smooth ER c. lysosome - Pesticide residues are not necessarily harmful, for a substance produces a harmful effect only if it reaches within the body in a high enough dose. c. The saline you used was hypertonic to the RBCs; this resulted in water osmosing through the RBC plasma membrane mostly out of the cell. Both membranes are selectively permeable and have pores. You have four methods at your disposal that you can use to analyze the substance in order to determine the nature of the infectious agent. 1 litre or 1 centilitre. b. the chromosome b. Bacteria are much larger than viruses, and t View the full answer Transcribed image text: d. Listeria monocytogenes c) Vertical transmission is the spread of viruses from the upper leaves to the lower leaves of the plant, and horizontal transmission is the spread of a virus among leaves at the same general level. Which of the following statements accurately describes the natural history of a disease? How can a single sheet of Polaroid film be used to show that the sky is partially polarized? 4. The odds of being involved in a car accident are about 1 in 100 while the odds of being involved in an airplane accident are about 1 in 5,000. 13-16 All of the following are associated with superantigens except _____. At its 5 end, the RNA genome has a viral protein (VPg) instead of a 5 cap. The leading reasons for nonrational risk perception include ______. Its function most resembles d. neurons; MHC class I b. Prokaryotic cells must also carry out respiration but do not have mitochondria. Choose the statement that correctly describes HIV and HBV. 2.Consistently demonstrate (leads by example) LIFE . After soaking in the yellow iodine-water solution for one hour, the cell is once again weighed. d. RAG1 or RAG2 b. antigenic shift kill the host cell immediately, while bacteria maintain life within the . b. simple diffusion Ebola hemorrhage fever is caused by a ______, and was the source of an epidemic in western Africa in 2014. d) lytic phages 13-4 The serotypes of Streptococcus pneumoniae differ in their _____. a) bacteriophages Bisphenol A (BPA) - Used to produce plastic-coated items such as linings of cans and bottles, tooth-protecting sealants, and water pipes. b. Antigenic shift; antigenic drift The solution level on the left side of the figure would rise while the solution level on the right side of the figure would decrease. Stop drinking alcohol during pregnancy - Reduced risk of fetal alcohol syndrome. D. Viruses reproduce asexually while bacteria cells reproduce sexually. Radiation - UV rays. For groups of two or more, see our Patriot Lite Group Travel Medical Insurance SM plan. O The presence of an envelope influences viral entry and exit strategies. d. MHC class I; MHC class II molecules. a) interference with viral replication Response curve representing a constant rate of response with increasing doors - Line b Toxins - Lead c. innate; acquired immune responses a. Epstein-Barr virus A virus has a cell, a nucleus, and does not eat. c. semipermeable d. carrier proteins. b. MHC class II chain b. it founded the plymouth colony under a proprietary governor. C. HIV leads to AIDS, when about one third of the individual's T cell count is lost. e. Listeria monocytogenes I. - improved sanitation d. The host cell must provide the transcriptional and translational machinery in order for RNA and protein products to be made from proviruses. - that some minimal dose is necessary before any effect can be observed. C) A person with an illness cannot be considered healthy. Which of the following statements about global health trends are true? POPs, or ______________ _____________ ______________, are dangerous because they don't degrade quickly and cells readily take them up. Increased frequency:increased depth of penetration B. c. Epidemics; pandemics Check all that apply. The saline you used was isotonic to the RBCs; this resulted in water osmosing through the RBC plasma membrane into and out of the cells at an equal rate. d. Both membranes consist of two concentric phospholipid bilayers and neither is selectively permeable or has pores. Multiple Choice Viruses are typically a piece of genetic material encased in a protein capsule. What general cell type are you most likely observing? With the first bite, you notice their texture is not as crisp and crunchy as you like. 13-78 During infection with HIV, a person is said to undergo seroconversion when _____. The bacterial phage lambda can infect some bacteria and - Infectious diseases such as diarrhea are on the decline globally. They affect wildlife populations, such as bats and frogs. c. nuclear pore. a. they are recycled by endocytosis more quickly than the normal receptor a. impermeable So, the water osmosed across the plasma membranes into the radish cells decreasing the turgor pressure inside of the cells. d. Mycobacterium tuberculosis The measles virus causes brain and skin infections. 25 ppm - Ospreys. Each factor listed below plays a role in determining environmental toxicity. B.) d. T-cell receptor V chain. - Infectious diseases such as diarrhea are on the decline globally. If a bottle of perfume were spilled in the corner of a large lecture hall, the students sitting near that corner of the room would very quickly smell the perfume. Viruses contain organelles while bacteria cells do not Tags: Question 2 SURVEY 30 seconds Q. e) re-infection by the same herpesvirus strain, b) copies of the herpesvirus genome remaining as mini-chromosomes in some host cell nuclei. a. a) They can be spread via the plasmodesmata. True or false: Most people in industrialized nations have PFC residues (perflurooctanoic acid) in their blood. a. influenza virus They are often harmful even in extremely dilute concentrations Question 33. Significantly more people have HBV (hepatitis) than HIV, but they are less likely to be treated for it. Which of the following statements accurately describes a viral envelope? Which of the following groups of people is most likely to have an increased exposure to toxic chemicals because of their job responsibilities? d. integrase 13-18 Which of the following is not associated with bacterial infection due to a genetic defect in or pathogen-induced subversion of normal phagocytic processes? a. leukocyte adhesion deficiency In the following section, we describe this approach in detail. Outbreaks of health problems that have a psychological rather than a physical basis are referred to as ______. Your lab partner has also made a slide, but the RBCs on their slide do look like the ones in the lab manual; your lab partner used a more dilute solution of saline but the same vial of blood. Our goal is to let community members put their participance into new projects with confidence. answer choices. b. b. sodium ions (Na+), hydrogen ions (H+), sugars, and amino acids All of the answers given. Which of the following statements is true of chloroplasts? The boundary that surrounds the contents of the nucleus is the This is because the solution on the left side of the figure is hypertonic while the solution on the right side of the figure is hypotonic. D. HIV can pass easily from one person to the next through casual contact. d. local populations; global populations. Filter the substance to remove all elements smaller than what can be easily seen under a light microscope. b. impenetrable The color change indicates that the iodine molecules were small enough to diffuse across the membrane and react with the starch inside the cell. There is evidence that elephants communicate via infrasound, generating rumbling vocalizations as low as 14 Hz that can travel up to 10 km. A. Which of the following statements accurately describes plant virus infections? Culture the substance by itself on nutritive medium, away from any plant cells. The water will mostly move from side "B" to side "A" because the water concentration is higher on side "B." BIO182 Chapter 19 MasteringBiology Homework, David N. Shier, Jackie L. Butler, Ricki Lewis, John David Jackson, Patricia Meglich, Robert Mathis, Sean Valentine. d. T-cell and B-cell development Question 4 120 seconds Q. Asbestos exposure and smoking each increase lung cancer rates 20-fold. Cancer Viruses have a higher metabolism than bacteria cells. b. ribosomes Colony collapse disorder is a persistent epidemic that affects ___________________. The possibility of suffering harm or loss resulting from a given action is referred to as ______. * A. c. it gave the pilgrims their own charter. possibility of suffering harm or loss resulting from a given action, process of estimating the threat a particular hazard poses to human health. Over time, the students sitting in the far corner of the room would smell the perfume. Viruses can reproduce on their own at any time. c. phagocytosis. O The envelope is only found on RNA viruses. anti-HIV antibodies are detectable in their blood serum. The smooth endoplasmic reticulum b. a cell wall. Viruses contain DNA, so they are alive. c. The radish cells were hypertonic to the water in which they were soaking. c. Cold sores develop as a consequence of CD8 T-cell killing. - dramatically reducing frog populations in many areas The field that specifically deals with the interactions, transformation, fate, and effects of natural and synthetic chemicals in the biosphere, including individual organisms, populations, and whole ecosystems is ______. e. They induce suppression of the immune response by causing T cells to undergo apoptosis. Steps of Virus Infections. d. Transport proteins, channel proteins, and passive carrier proteins all help increase the selective permeability of a phospholipid bilayer membrane. Match the following causes of death with the lifetime chance of dying that way in the United States. X=111110201X. Members of a population vary in their level of sensitivity to a toxin. Your friend says you should refrigerate them in a bowl of water overnight. d. There will be no net movement of water because the solutions are isotonic. d. the proteasome cannot generate viral peptides for presentation by MHC class I molecules. b) They can be spread via the plasmodesmata. answer choices Organism that lives on the cell and causes it harm Something that causes harm to the cell Cell that the virus invades and takes over Question 3 120 seconds Q. e) envelope, It turns out that your evil roommate has a herpesvirus-mediated genital sore. 13-45 Which of the following is not a characteristic of staphylococcal enterotoxins? d. simple diffusion, You are a scientist observing a membrane through which water and some small hydrophobic molecules can freely pass along a concentration gradient from high to low. 20. C. Viruses contain organelles while bacteria cells do not. d. the use of antibiotics. b. the IL-12 receptor b) Viruses can replicate independently of their cellular hosts. Question 12. T-cell-dependent antibody responses; cell-mediated immune responses. The membranes of the mitochondria provide a place for enzymes needed for cellular respiration to anchor and function. You place a small drop of the blood on a slide, add a drop of strong saline (salt) solution, and then cover all of it with a coverslip. d. it made plymouth a royal colony c) I b. classical complement and blood-clotting pathways