A scientist develops a new medication that is a protein compound and that must be administered by injection. Which of the following would be the most effective and safest means of preparing a sterile solution of the new medication?
A) autoclaving
B) filtration
C) dilution with alcohol
D) lyophilization
E) ultraviolet irradiation
B
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Where is the site of elongation of long bones?
A. in the diaphysis. B. in the growth plate epiphysis. C. as part of the articular cartilage. D. lining the bone marrow cavity.
The table shows the distribution of traits (A-E) in six extant species (1-6). A "0" indicates the ancestral condition, while "1" indicates the derived condition. Based on this data, which species would be considered the outgroup?
A. 1
B. 2
C. 3
D. 4
E. 5
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 cladistics?
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?
A drug called ouabain specifically inhibits the sodium-potassium pump present in neuron cells. Over time, what would this action of ouabain cause?
A) the inside of the neuron to become more negative B) repolarization C) elimination of a concentration gradient D) more potassium to be transported into the neuron
Which of the following is not part of blood plasma?
A. metabolites and wastes B. proteins C. salts and ions D. hemoglobin