What properties of a chemical contribute to its potential to bioaccumulate in the top predators of...
- What properties of a chemical contribute to its potential to bioaccumulate in the top predators of an ecosystem? Provide an example of such a chemical.
Homework Answers
Bio-accumulation refers to the gradual accumulation of chemicals or pesticides in an organism. The main cause of the same is when an organism absorbs a chemical faster than it excretes or catabolize it. Thus, greater the half life of a chemical, the greater is the risk of its poisoning.
Example: tetra -ethyl lead compounds are fat soluble compounds and get stored in body's fat. When these tissues are used to release energy, the toxins are also released and cause Poisoning.
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What properties of a chemical contribute to its potential to
bioaccumulate in the top predators of...
The properties of a specific polymer depend only on the chemical structure of its repeat unit...
The properties of a specific polymer depend only on the chemical structure of its repeat unit and its molecular weight. True or false? And explaination.
Properties and Changes of Matter propenses both and properties and can undergo physical or chemical changes...
Properties and Changes of Matter propenses both and properties and can undergo physical or chemical changes Physica properties are those that a substanoe displays without changing ts but not its compositon. are evident only during a chemical change (also called a chemical reaction) in contrast when physical change, it may change appearano, Part A Cassity each of changes as a physical change or a Drag each item to the appropriate bin.
cullert. 5. The G-series nerve agents are based on the chemical properties of what common chemical(s)?...
cullert. 5. The G-series nerve agents are based on the chemical properties of what common chemical(s)? Discuss the mode of action of the nerve agents in general. 7. Does the dose rate of a nerve agent affect the body's response? Explain. What is the effect of daily exposure to small doses of a nerve agent over several days? 3. Explain "persistence" of a chemical weapons agent, in terms of its reactions with air, microorganisms, sunlight, and so on. Which
for the Normal Isotope properties of Technetium-99 answer the following: i. Where is the “Normal” isotope...
for the Normal Isotope properties of Technetium-99 answer the following: i. Where is the “Normal” isotope located on periodic table (for example, top right, bottom left, center)? ii. Is “Normal” Isotope Metallic, Non-Metallic, or Metalloid? What does it mean to have this characteristic? iii. What is “Normal” Isotope’s Atomic size and Ionization Energy? Describe how the “Normal” Isotope’s Atomic size and Ionization Energy affect its chemical properties?
#3) Describe the difference between chemical and physical properties and changes of matter? How do these...
#3) Describe the difference between chemical and physical properties and changes of matter? How do these physical and chemical properties relate to intrinsic and extrinsic properties? How are these properties related to the different states of matter? Lastly, how might one classify these different types of matter? Make sure to provide examples of each.
2) (3 pts) What is the change in the chemical potential of sucrose when its concentration...
2) (3 pts) What is the change in the chemical potential of sucrose when its concentration in water at 25.0°C is changed from 0.150 mol dm-3 to 1.00 mol dm ? Given R= 8.3145 J K-mor!
CONCEPT CHECK 1. What evidence is there that predators can control the abundance of prey? 2. How ...
Ecology Chapter 14 Predation and Herbivory
Concept Checks
CONCEPT CHECK 1. What evidence is there that predators can control the abundance of prey? 2. How has the reduction of top predators had unintended consequences on the abundance of prey? 3. What evidence is there that herbivores can control the abundance of plants? CONCEPT CHECK 1. How does a prey population's ability to disperse allow the prey to persist in the presence of predators? 2. Based on the predator-prey population equations,...
2. a. In infrared spectroscopy, what property or properties of a chemical bond determine the frequency...
2. a. In infrared spectroscopy, what property or properties of a chemical bond determine the frequency (i.e. the wavenumber) of a peak in the IR spectrum of a molecule? b. In infrared spectroscopy, what property or properties of a chemical bond determine the intensity of absorption (i.e. the size) of a peak in the IR spectrum of a molecule?
Using what you know about the transfer of energy among trophic levels
Using what you know about the transfer of energy among trophic levels, explain why there are so few top predators compared to the organisms in the other trophic groups (e.g. producers, primary consumers, secondary consumers) within a given ecosystem?
A mass of 5kg is on top of a building of height 10m. Calculate its potential...
A mass of 5kg is on top of a building of height 10m. Calculate its potential energy. The mass then falls at a speed of 8 m/s in 4 sec, find its KE and momentum p. What is the Force and impulse the mass transfers to the ground?
Properties and Changes of Matter propenses both and properties and can undergo physical or chemical changes Physica properties are those that a substanoe displays without changing ts but not its compositon. are evident only during a chemical change (also called a chemical reaction) in contrast when physical change, it may change appearano, Part A Cassity each of changes as a physical change or a Drag each item to the appropriate bin.
cullert. 5. The G-series nerve agents are based on the chemical properties of what common chemical(s)? Discuss the mode of action of the nerve agents in general. 7. Does the dose rate of a nerve agent affect the body's response? Explain. What is the effect of daily exposure to small doses of a nerve agent over several days? 3. Explain "persistence" of a chemical weapons agent, in terms of its reactions with air, microorganisms, sunlight, and so on. Which
2) (3 pts) What is the change in the chemical potential of sucrose when its concentration in water at 25.0°C is changed from 0.150 mol dm-3 to 1.00 mol dm ? Given R= 8.3145 J K-mor!
Ecology Chapter 14 Predation and Herbivory
Concept Checks
CONCEPT CHECK 1. What evidence is there that predators can control the abundance of prey? 2. How has the reduction of top predators had unintended consequences on the abundance of prey? 3. What evidence is there that herbivores can control the abundance of plants? CONCEPT CHECK 1. How does a prey population's ability to disperse allow the prey to persist in the presence of predators? 2. Based on the predator-prey population equations,...
2. a. In infrared spectroscopy, what property or properties of a chemical bond determine the frequency (i.e. the wavenumber) of a peak in the IR spectrum of a molecule? b. In infrared spectroscopy, what property or properties of a chemical bond determine the intensity of absorption (i.e. the size) of a peak in the IR spectrum of a molecule?
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