At times we lack the medicines with which to treat them, as some emergent diseases are caused by drug-resistant strains of a pathogen. c. Immune responses against S. pneumoniae are serotype-specific and protect only against strains that possess the same capsular polysaccharide antigens. You are a microbiologist working with a species of bacteria that can perform photosynthesis. d. Typically just a piece of genetic material encased in proteins, viruses are small, non-cellular infectious agents that are only capable of reproducing when inside a living cell such as those of plants, animals, fungi, protozoans, or bacteria. a. Toxoplasma gondii - Acute exposure involves a single contact with a toxic chemical. b. proteins. Which of the following statements most accurately describes a selectively permeable membrane? Poisons that are produced naturally are called ____________ substances. b. channel proteins This could be best used as a simple model for d. the blueprints for making the product, b. a worker in a factory who places labels on products and then packs them into a shipping box. Why do these antibiotics not work to kill viruses and cure people of viral infections? Which of the following would be likely to move through a plasma membrane by simple diffusion? Regulators struggle with how to set acceptable pollution levels based on the dose-response curve because ______. Choose ALL that apply. This cell is weighed and then placed in a beaker of 3 percent iodine dissolved in water. Which of the following is not a concern of environmental toxicology? f. provoke vomiting and diarrhea when ingested. O Enveloped viruses do not have protein spikes. a. is the site where lipids destined for other cellular compartments are manufactured. III. a) Double-stranded DNA viruses b) Formation of the provirus would be stopped. Asbestos workers who smoke, however, have a 400-fold increase in cancer rates. A solid waste (garbage) transfer facility that sorts and breaks down garbage into recyclables and waste to be thrown away in the landfill would be a suitable analogy for which cellular organelle? Determine the average shear stress on the wetted perimeter of this channel. 13-33 Patients who lack _____ are very susceptible to infections with intracellular bacteria, including the ubiquitous nontuberculous strains of mycobacteria. a. They are often harmful even in extremely dilute concentrations Dose (amount of experience) - Horizontal (x) axis Ribosomes are very small non-membranous organelles that can either exist freely in the cytoplasm or be embedded in the endoplasmic reticulum of a cell; they are associated with the synthesis of answer choices they need genetic material They need a host cell They need bacteria They need insulin b) They can be controlled by the use of antibiotics. O Enveloped viruses do not have protein spikes. You buy a bunch of small, round, red radishes at the grocery store; they are on sale because they have been sitting in the produce aisle for a while. - must be handled carefully in large doses, but they can be rendered relatively innocuous by dilution, neutralization, or other physical treatment, draws from many disciplines, including biology, biochemistry, pharmacology, among others. Which of the following statements accurately describes a difference between viruses and bacteria? Cell W. d. inhibition of peptide transport by transporter associated with antigen processing (TAP) a. impermeable These changes, called cytopathic effects, can change cell functions or even destroy the cell. Many of these materials can be rendered relatively innocuous by dilution, neutralization, or other physical treatment. When you get home you remove the stems and clean them. 13-32 A deficiency in _____ causes a condition that closely resembles X-linked severe combined immunodeficiency and is characterized by inefficient cytokine signaling. - Chronic conditions such as cardiovascular disease and diabetes are increasing and spreading to poorer populations. e. None of the above is mismatched. DDT is a well-known case of biomagnification in the environment. Viral genomes consist of what type of nucleic acid molecules? Which of the following are true about the effects of exposure to carcinogens? d. The cell should gain weight over time because it is isotonic to the beaker environment and water will be drawn into the cell because of the albumin. c. Most deficiency syndromes are caused by dominant gene defects. Your friend says you should refrigerate them in a bowl of water overnight. From what substance do liposomes spontaneously form and why are they important? Urban flooding has become one of the most common natural hazards threatening people's lives and assets globally due to climate change and rapid urbanization. - Immunological status affects susceptibility to toxins. - Data on which chemicals are endocrine disrupters are not definitive. e. thymic development. B. a) interference with viral replication d. reverse transcriptase. 30 seconds. Which of the following statements accurately describes plant virus infections? C. HIV leads to AIDS, when about one third of the individual's T cell count is lost. a. they are recycled by endocytosis more quickly than the normal receptor c. the expression of MHC class I and class II molecules A) A disease is traditionally diagnosed and treated by a nurse. Viruses are very diverse. The leading reasons for nonrational risk perception include ______. Zooplankton consume DDT 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. a. X-linked agammaglobulinemia The measles virus causes mouth and gum infections. a. In which leaf tissues would you expect to find the highest density of chloroplasts? c) They are rarely spread by insects. The selective absorption and storage of a great variety of molecules inside cells and tissues at levels that are higher than in the environment is called ______. The nuclear envelope consists of two concentric phospholipid bilayers while the plasma membrane is only one phospholipid bilayer. Which of the following virus types inserts a double-stranded DNA copy of its genome into the host cell's genome? b) removal of viral mRNAs Virus inject the nucleic acid into the host cell, and the nucleic acid integrates into the host cell DNA, and stay dormant for a long time. 13-35 Protective antibodies generated in response to influenza virus bind to _____ of the viral envelope. - LD50 is the dose of the toxin that is lethal to half the population. 13-9 Which of the following statements regarding herpes simplex virus is false? c. phagocytosis. Members of a population vary in their level of sensitivity to a toxin. . 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. d. I would expect to find the photosynthetic enzymes associated with the ER of the bacteria. Traditional reliability design methods describe the dispersion degree of soil parameters with their point variance without considering the influence of correlation distance. c. TAP1 or TAP2 The ________________ principle is being used to regulate toxins by requiring manufacturers to prove that substances are safe rather than requiring regulators to show that they are dangerous. c. lymphoproliferative syndrome caused by deficiency of SH2D1A stable, they do not degrade easily and have become extremely widespread in the environment. b) IV You observe layers of cells that have a definite, rigid, rectangular shape; there appears to be a nucleus in all of the cells and there are many oval-shaped green structures that seem to be moving around inside of the cells in an orderly fashion. d. Both membranes consist of two concentric phospholipid bilayers and neither is selectively permeable or has pores. stable chemicals are resistant to degradation and can cause problems long after application and far from the sites where they were originally used. e. Janus 3 kinase (Jak3) e. A cDNA intermediate is required in order to produce a provirus. This specifically makes alcohol a ______. Potential routes of exposure to toxins in the environment. b. receptor proteins d. carbon dioxide (CO2), b. sodium ions (Na+), hydrogen ions (H+), sugars, and amino acids. They are much less sensitive to ______ than regular rats, so studies using them are highly suspect. They bind to MHC class I molecules and T-cell receptors. County employees are subject . The palisade mesophyll layer is responsible for most of the photosynthesis that occurs while the spongy mesophyll layer underneath it aids in the exchange of gases (CO2 and O2) and water vapor. b) copies of the herpesvirus genome remaining as mini-chromosomes in some host cell nuclei Viruses contain organelles while bacteria cells do not Tags: Question 2 SURVEY 30 seconds Q. Job offers for selected candidates will be made the week of May 1, 2023. b) Formation of the provirus would be stopped. Which of the following statements accurately describes the properties of gases? d. Chdiak-Higashi syndrome caused by deficiency of CHS1 b. For additional recruiting questions, please contact Isaac.Phelps@state.co.us. Which of the following help increase the selective permeability of a phospholipid bilayer membrane? - better nutrition c) Cutting and assembling the capsid would be halted. Viruses are acellular, obligative parasites that contain a protein coat . a) The gp120 glycoprotein would no longer be able to bind to the CCR5 receptor. is an emerging discipline that seeks to understand how environmental changes threaten our health and the environment itself. The boundary that surrounds the contents of the nucleus is the b. immune individuals; susceptible individuals The following data are taken from measurements on Indian Fork Creek: A=26m2A=26 \mathrm{m}^{2}A=26m2, P = 16 m, and S0=0.02m/62mS_{0}=0.02 \mathrm{m} / 62 \mathrm{m}S0=0.02m/62m. The measles virus causes nasal and lung infections. 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. About Us: If your goal is to build a career that makes a difference, consider joining the dedicated people of the Colorado Department of Human Services(CDHS). A. A protein molecule, transferrin, embedded in the plasma membrane recognizes iron molecules and causes the plasma membrane to fold in around the iron and take it into the cell. Which of the following statements helps to explain why RNA viruses tend to have unusually high rates of mutation? d. superantigens c. semipermeable e. agammaglobulinemia caused by deficiency of Bruton's tyrosine kinase Each factor listed below plays a role in determining environmental toxicity. Using this kind of framing camera to diagnose the internal hot spot causes the light emitted from the same point in the target to appear at different positions on different frames, resulting in framing images that cannot accurately judge the evolution process of implosion, which seriously affects the accuracy of the measurements. Which of the following statements accurately describes how viruses reproduce? 4. b. NADPH oxidase; produce superoxide radical (-) nonspecific activation 2-20% of body's CD8 T cells. d. factor D e. CD18. d) II. f. It is able to render target cells responsive even if they express only one functional allele of IFNR1. Filter the substance to remove all elements smaller than what can be easily seen under a light microscope. 13-44 Listeria monocytogenes replicates in _____ of macrophages after _____. The plasma membrane of some white blood cells contain ________ that bind with proteins of cells such as bacteria that have invaded the human body. d) viroid 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. d. Transport proteins, channel proteins, and passive carrier proteins all help increase the selective permeability of a phospholipid bilayer membrane. Proton therapy accurately targets very specific locations, which may result in less damage to surrounding .