Cyanogenic glycosides, which break down into cyanide, are toxic to cells because they inhibit the function of which organelle(s)?
A. Golgi apparatus
B. Ribosome
C. Nucleolus
D. Mitochondria
E. Endoplasmic reticulum
Clarify Question
· What is the key concept addressed by the question?
· What type of thinking is required?
· What key words does the question contain and what do they mean?
Gather Content
· What do you already know about about cyanide toxicity? How does it relate to the question?
Consider Possibilities
· What other information is related to the question? Which information is most useful?
Choose Answer
· Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?
Reflect on Process
· Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
D. Mitochondria
Clarify Question
· What is the key concept addressed by the question?
o This question is asking you to identify the organelles that are affected by cyanide.
· What type of thinking is required?
o You are being asked to take what you already know and apply it to the effects of cyanide to plant cells.
· What key words does the question contain and what do they mean?
o Cyanogenic, which refers to a chemical that gives rise to cyanide.
o Cyanide, which is a toxin that inhibits the electron transport chain in cellular respiration.
o Organelle, which is a subcellular structure with a specific function.
Gather Content
· What do you already know about about cyanide toxicity? How does it relate to the question?
o The electron transport chain occurs in the mitochondria in plant cells.
Consider Possibilities
· What other information is related to the question? Which information is most useful?
o While the Golgi, ER, ribosomes, and nucleoli are sites of specialized function, they do not play a direct role in the electron transport chain or in cellular respiration.
Choose Answer
· Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?
o The mitochondria are the only organelles involved in cellular respiration. If cellular respiration is inhibited, mitochondrial activity will also be inhibited.
Reflect on Process
· Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
· Apply level:
o This question asked you to determine the impact of cyanide on plant cells. Answering this question correctly depended on your ability to use the effect of cyanide in a new situation. If you got the correct answer, great job! If you got an incorrect answer, where did the process break down? Did you remember that cyanide inhibits the electron transport chain, or that the electron transport chain occurs in the mitochondria of plant cells? Did you have trouble extending the effect of cyanide to determine the correct answer?
You might also like to view...
Midocean ridges form:
a. anywhere in the middle of the ocean. b. in subduction zones. c. where oceanic crust is cracked and magma is emerging. d. in deep ocean trenches.
As you look through the microscope, you observe a liver cell just beginning to enter mitosis. Identify the steps of mitosis that are listed in correct order.
A. prophase, B. metaphase, C. anaphase, D. telophase E. all of the above
Fill in the blanks to complete the following statements
A ________________ is a group of microbes growing in a nutrient-rich environment. ? Fill in the blank(s) with correct word
The pattern of wet years and dry years shown will probably move the population toward
A. maintaining abundant variation in beak depth. B. having two, distinct populations. C. having intermediate size beaks. D. all having larger beaks. E. all having smaller beaks.