Susie just squished a cockroach and its pale yellow hemolymph squirted out on the floor. If Susie analyzed the hemolymph, she would expect to find all of the following EXCEPT

Question

A.  sugars.
B.  water.
C.  ions.
D.  erythrocytes.
E.  amino acids.
F.  cells that protect against foreign microbes.

Clarify Question
What is the key concept addressed by the question?
What type of thinking is required?
 
Gather Content
What do you already know about hemolymph? What other information is related to the question?
 
Choose Answer
Given what you now know, what information 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?

Answer 1

D.  erythrocytes.


Clarify Question
What is the key concept addressed by the question?
        · This question is asking about the composition of hemoymph.
What type of thinking is required?
        · Apply level (sample phrases, or use your own):
            o You are being asked to take what you already know and use, or apply, it to the nature of hemolymph.
 
Gather Content
What do you already know about hemolymph? What other information is related to the question?
        · Hemolymph is a combination of fluid that circulates and extracellular fluid.
        · Extracellular fluid contains proteins, ions, various macromolecules, and water.
        · Insects have an open circulatory system that moves hemolymph to sinuses that allow the hemolymph and its contents to directly contact tissue.
 
Choose Answer
Given what you now know, what information is most likely to produce the correct answer?
        · Ions, sugar, water, and amino acids are materials that are found in and around cells. They are present in hemolymph.
        · Insects do have immune cells in their hemolymph.
        · Insects do not have red blood cells (or respiratory pigments), as they use their tracheal system (and not their open circulatory system) to transport oxygen and carbon dioxide directly to and from cells, respectively.
        · The absence of respiratory pigments results in the pale yellow color of the hemolymph.
 
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 Answering this question correctly depended on your ability to use the composition of hemolymph in a new situation. If you got an incorrect answer, did you remember that hemolymph is not used to transport oxygen, or that hemolymph contains the macromolecules that are characteristic of extracellular fluid? Did you have trouble extending hemolymph to determine the correct answer?