Environmental Toxicology Assgn. 2 - Essay Example

Comments (0) Cite this document
The most important pathway is through the leaves, as with gaseous chemicals consisting principally the nitrogen oxides and sulphur, chlorine, fluoride, photochemical…
Download full paperFile format: .doc, available for editing
GRAB THE BEST PAPER96.7% of users find it useful
Environmental Toxicology Assgn. 2
Read TextPreview

Extract of sample "Environmental Toxicology Assgn. 2"

Environmental Toxicology Assignment 2 Question Answer is 29 Question 2 The ment is true Question 3
Plants can absorb toxicants either through the leaves, from the atmosphere or water through the roots. The most important pathway is through the leaves, as with gaseous chemicals consisting principally the nitrogen oxides and sulphur, chlorine, fluoride, photochemical pollutants, and ammonia (Kungolos 111).
Question 4
Answer True
Question 5
Principal pathway of chemical uptake terrestrial animals are related with those of humans the epithelial liner of the lungs, the skin and the digestive tract. The dermal and inhalation routes are mostly the first pathways of exposure to toxicants.
Question 6
A thin endothelial lining of vascular pathways, which exist between the pillar cells and are the location of gas swap, elimination of nitrogenous toxic and a few electrolyte exchanges. There is a trend and possibility for marine fishes to lose water to the atmosphere via the gill epithelium. Freshwater fishes actively manage salt concentrations regardless of the salt concentrations amount in the surroundings. The gills absorb salt from the surroundings through the use of mitochondria-rich cells (Kungolos 111). The liquid diffuses into the fish, and thus excretes hypotonic urine to remove all the surplus water. A marine fish has an inner osmotic concentration below that of the environment water, so there is the tendency to lose water and absorb salt.
Question 7
Answer 0.00
Question 8
Answer 0.64
Question 9
Answer 0.30
Question 10
Answer 1.20
Question 11
Answer 0.00
Question 12
Answer 0.03
Question 13
Answer 0.02
Question 14
Answer 0.02
Question 15
Answer 0.02
Question 16
Answer 0.00
Question 17
Answer 0.00
Question 18
Answer 0.01
Question 19
Answer EB4
Work Cited
Kungolos, A G. Environmental Toxilogy. Southampton [u.a.: WIT Press, 2006. Print. Read More
Cite this document
  • APA
  • MLA
(“Environmental Toxicology Assgn. 2 Essay Example | Topics and Well Written Essays - 250 words”, n.d.)
Retrieved from
(Environmental Toxicology Assgn. 2 Essay Example | Topics and Well Written Essays - 250 Words)
“Environmental Toxicology Assgn. 2 Essay Example | Topics and Well Written Essays - 250 Words”, n.d.
  • Cited: 0 times
Comments (0)
Click to create a comment or rate a document

CHECK THESE SAMPLES OF Environmental Toxicology Assgn. 2

Manage change task 2

8 Pages(2000 words)Research Paper


...?Excretion The body is an amazing and complex system of reactions all working towards maintaining homeostasis. Excretion is one such function of the body which works to remove excess wastes and toxins. Some of the major organs involved in various excretions are the lungs which help to remove built up carbon dioxide and moisture from the body. The skin also aids in removing excess water, salts and even urea through perspiration. One main organ which facilitates excretion is the kidneys. These are part of the excretory system which works to clean the blood and filter out cellular wastes, toxins, nutrients and excess minerals. The normal breakdown of tissue and the left over products from food and liquid intake deliver wastes... The body is an...
1 Pages(250 words)Essay


...?Methylation is the addition of a methyl group to a substrate or the substitution of an atom or a group of atoms by a methyl group. A methyl group, CH3, is an alkyl group derived from methane, CH4, by lost of one hydrogen. The methylation process converts inorganic (metal) mercury, Hg, to methyl mercury, CH3Hg+. As a positively charged ion, methyl mercury combines with anions, such as chloride (Cl-), nitrate (NO3-), hydroxide (OH-), and sulphur containing anions, such as thio groups (SH). Indeed, the thio group on the amino acid cysteine and hence in proteins containing cysteine has high affinity for methyl mercury forming a strong covalent bond. Methyl mercury can coordinate (bond) to more than one cysteine amino acid. Unlike... is the...
1 Pages(250 words)Research Paper

Environmental toxicology

...? Environmental Toxicology: Chernobyl Due Throughout history there have been many instances where manmadestructures and processes lead to accidents or, in some way, cause toxicants to be released into the air in amounts that can be truly dangerous to human beings, animals, and entire ecosystems. There is probably no other singular event that represents how awful these sorts of accidents can be is the story of Chernobyl. Most people have heard references to the Chernobyl and Nuclear plant accident that made it famous. However, most people today probably do not know the magnitude of the effects of these accidents and the horrifying side-effects that it has had and continues to cause. Understanding the...
3 Pages(750 words)Essay


...Toxicology Answer Organic phosphate or OP compounds are a of chemicals used in both domestic and industrial sectors. They are commonly used in agriculture, chemical warfare and public health eradication programs. Some of the commonly used OP compounds are insecticides like parathion, malathion, dichlorvos, ethion, chlorpyrivos, diazinon and fenthion; antihelminthic agents like trichlorfon, herbicides like tricresyl phosphate and nerve gases like sarin, soman and tabun (Katz and Brooks, 2010). Most of these compounds are either amides, esters or thiol derivatives of phosphonic acid (Kamanyire and Karalliedde, 2004). These compounds are notorious for their health hazards. Most of the health effects are due to inhibition... of the body...
8 Pages(2000 words)Essay


...Toxicology Unless otherwise d, multiple choice questions may have more than one correct answer. Indicate all that apply. Some of these questions came from student papers. 1. Which of the following would you be least worried about in terms of carcinogenicity? (one answer only) a) Rn b) CrO3 c) Mustard gas d) Cl2 2. Which of the following is the least toxic? (one answer only) a) Methylene chloride b) methyl alcohol c) ethylene d) ethane 3. Which of the following is the least toxic? (one answer only) a) styrene b) CH2=CH-CHO c) Butyl alcohol d) Pentachlorophenol 4. Skin exposure to which of the following would be of the least concern? (one answer only) a) CHCl3 b) CH3COOH c) CH3NH2 d) (CH3)2CHOH 5....
4 Pages(1000 words)Coursework

Environmental Toxicology. Homework

...Environmental Toxicology. Homework Question Expression of Efflux pumps, heat shock proteins, antibiotic resistant genes, metallothioneins , antioxidant enzymes and membrane modifying proteins Activation of general stress response genes, formation of vesicles loaded with toxic compounds or Spore formation Alteration of metabolic pathway or target site or production of antioxidants like glutathione Drug inactivation or modification and reduced drug accumulation Question 2 D. all of the above Question 3 Chronic toxicity is the deferred poisonous impact from exposure to a matter. Availability of Sulphates in the river and the availability of CaCO 3 salts with a concentration of 38.52 mg/l...
3 Pages(750 words)Essay

Environmental Toxicology. Oil Spills

...Long-Term Ecological Effects of Oil Spills Following the American Psychological Association Guidelines One of the largest witnessed oil spills in history happened in the Bay of Campeche of the Gulf of Mexico as a result of explosion on at the Ixtoc I platform in 1979. The disaster was caused by failure of blowout preventer functioning and subsequent fire, which resulted in crash of Sedco 135F drilling tower releasing gigantic quantities of oil into the water. The government-owned oil company Permex was trying to stop the leak for more than nine months using several methods and finally drilling two relief wells. Until that moment around140 million gallons of oil had gushed from the well into the water causing substantial changes... Ecological...
1 Pages(250 words)Essay

Environmental Toxicology. Homework 6

...Environment and Toxicology Which contaminant played a role in the origin of the "Madhatter" character in "Alice in Wonderland"? C. Mercury* 2. In terms of dose-response behaviour, selenium is an example of B. Macronutrient* 3. The increased concentration of an element in an aquatic organism relative to water it lives in, acquired over its life is called A. Bio concentration* 4. List six uses of lead that make cause exposure to humans. Used in paint and other protective coating Lead acid batteries industries Use of lead in cosmetics Lead used in hobbies and arts such as firing guns and making ammunition Lead in imported candies from Asia and Mexico Lead used in water pipes contaminates drinking...
1 Pages(250 words)Essay


... & Labor. Medication Sense. [Online] Available from: [Accessed 2 May 2014] Ebert, I., Bachmann, J., Kuhnen, U., Kuster, A., Kussatz, C., Maletzki, D. & Schluter, C. (2011). Toxicity of the fluoroquinolone antibiotics enrofloxacin and ciprofloxacin to photoautotrophic aquatic organisms. Environmental Toxicology and Chemistry 30 (12). [Online] Available from: [Accessed 10 May 2014] Etminan, M. et al. (2012). Oral Fluoroquinolones and the Risk of Retinal Detachment. JAMA. [Online] Available from: [Accessed 2 May 2014] Fish, D. (2001... (Miller...
8 Pages(2000 words)Essay
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.

Let us find you another Essay on topic Environmental Toxicology Assgn. 2 for FREE!

Contact Us