Normal and sickle-cell hemoglobin molecules differ
A) in the number of amino acids in each molecule.
B) by a single DNA point mutation that leads to the substitution of one amino acid for another.
C) in the number and orientation of the amino acid chains attached to the heme portion of each molecule.
D) in the number of oxygen molecules that can be carried by each molecule.
E) by the type of bone marrow that produces them.
B
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Which process in the diagram would occur the most after eating a fatty meal of french fries and ice cream?
A. II
B. I
C. III
D. II and III equally
E. I and II equally
Clarify Question
· What is the key concept addressed by the question?
· What type of thinking is required?
Gather Content
· What do you know about the digestion of fats? 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?
Disulfide bonds are often found to stabilize which of the following levels of protein structure?
A) primary B) secondary C) tertiary D) primary, secondary, and tertiary E) None of these structures involve disulfide bonds.
The archaea known as halophiles
A) require temperatures above 45?C to survive. B) require salt concentrations of 9% or greater to survive. C) are members of the phylum Euryarchaeota. D) are members of the Euryarchaeota and require temperatures above 45?C. E) are members of the Euryarchaeota and require salt concentrations above 9%.
Which of the following is produced during the process of cellular respiration?
A carbon dioxide B sodium chloride C oxygen D sugar