Do pesticides even at a non-toxic dose bioaccumulate in animal and plant tissue? Also do metabolite...

Do pesticides even at a non-toxic dose bioaccumulate in animal and plant tissue?

Also do metabolite changes in plants for herbivore defense causes similar fluctations in p450 expression? the sub-lethal stress (ie parasites, pathogens and habitat loss) may change expression. Does exposure to this growing list of factors detract from pesticide defense by p450?

Expert Solution

Bioaccumulation can occur even at a non toxic dose and depends on the half life of the chemical contained within the pesticide. It happens when the rate of accumulation is greater than rate of catabolism.

The metabolite changes in plants lead to changes in cytochrome p450 expression as the enzyme catalysses a series of reactions and contribute to the chemical defense of plants. The fluctuations of p450 again depends on multiple factors like concentration of toxic or non toxic compunds, substrates which needs to be converted into metabolites. If the concentration of toxic compounds increases, p450 expression increases and the enzymatic activity will be channeled more towards catalysing those compunds into less harmful ones.

The ability to balance the pesticide defense against many other abiotic/biotic factors would reduce the ability of fight against the harmful effects of pesticide. Ultimately, the decision needs to be taken by the plant as to which needs to be taken care more. Harmful effects of pesticide will be more potent than other factors. If the metabolic pathway shifts towards reducing the effect of other factors, ability to fight against pesticide may go down.

gladiator answered 2 years ago

Choose any one plant tissue. Compare and contrast that tissue to animal epithelial tissue. The answer...

Choose any one plant tissue. Compare and contrast that tissue to animal epithelial tissue. The answer should include the makeup of each, considering structure, function, and interactions (or lack of interactions) between cells; it should also address how different organisms can build different tissue to address similar issues, so choose the tissue carefully.

For non-carcinogenic effects which of the two chemicals (for the same dose) is more toxic and...

For non-carcinogenic effects which of the two chemicals (for the same dose) is more toxic and why? a) Chlorine b) Chloroform

compare and contrast a plant tissue to animal epithelial tissue. compare and contrast using structure, function...

compare and contrast a plant tissue to animal epithelial tissue. compare and contrast using structure, function and interactions/lack of interactions between cells. Also address how different organisms can build different tissue to address similar issues please

What are the first two tissue layers that form in an animal, what do they become,...

What are the first two tissue layers that form in an animal, what do they become, and why are they important? Would you expect these tissue layers to be different in terrestrial vs. aquatic organisms.

Topic: Animal Internal Transport Systems Compare a plant: would you describe the overall vascular tissue as...

Topic: Animal Internal Transport Systems Compare a plant: would you describe the overall vascular tissue as an open or closed system? Xylem and Phloem? What molecules are moved in an animal’s circulatory system? Compare and contrast animals and plants for molecules transported internally. Describe the different types of force used to move fluids in plant internal transport systems and animal internal transport systems.

Comparing plant cells and animal cells Plant cells and animal cells share many of the same structures, but each type of cell also has unique structures.

Part A - Comparing plant cells and animal cells Plant cells and animal cells share many of the same structures, but each type of cell also has unique structures. In this activity, you will indicate which cell structures are found only in plant cells, only in animal cells, or in both plant and animal cells. Drag each cell structure to the appropriate bin. If a structure is found in both plant cells and animal cells, drag it to the "both"...

a- Do you believe in animal testing, even with the specific guidelines that are required to...

a- Do you believe in animal testing, even with the specific guidelines that are required to be followed? b-If you were to participate in a scientific research study as a subject, what, if anything, would cause you to decide to opt out? Why?

Why do you suppose an animal virus grown in (and then isolated from) tissue culture might...

Why do you suppose an animal virus grown in (and then isolated from) tissue culture might be more susceptible to inactivation by antibody than a similar virus propagated (and then isolated from) in an animal? Assume you do the assay by isolating the viruses grown in these two different environments from antibody and then seek to compare in a controlled environment, which virus particle is inactivated more readily by the presence of appropriate antibody.

How do plant and animal cells differ? What type of fluid movement do each have?

Experiment is do slugs prefer plant based foods or animal protein? Think about an experiment you...

Experiment is do slugs prefer plant based foods or animal protein? Think about an experiment you could run to test your hypothesis. What would be the variable(s) in your particular experiment? For each variable that you identify, say whether it would be considered an independent- or dependent variable. Also, say whether it would be considered a quantitative- or qualitative variable. Explain your reasoning for assigning each variable as quantitative or qualitative. Hint: See pp. 2-3 for help on identifying variables....

Question