Sharks differ from most other fish in that they lack ____.
A. gill slits
B. scales
C. bone
D. paired appendages
E. teeth
Answer: C
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The opening to the tracheal system (respiratory system) in insects is the
A. spiracle. B. trachea. C. bronchus. D. alveolus. E. stomata.
Woolly Spider Monkeys are Old World Monkeys found in Africa that exhibit ancestral features.
Indicate whether the statement is true or false.
Myocardial infarction, also called a heart attack,
A) is caused by excessive blood pressure in the heart. B) actually causes no permanent damage to the heart. C) is unrelated to cigarette smoking. D) is the damage or death of cardiac muscle tissue.
Nucleases are enzymes that degrade mRNA. In order for nuclease to overcome the inherent protections in mRNA that prevent its degradation, nucleases must use (Select all that apply.)A) 5' decapping enzymes.B) A and U sites that promote removal of the poly A tails.C) C and G recognition sites that activate removal of poly A tails.D) 3' end recognition sites that initiate quick degradation.E) 3' cap and poly A tail sites that activate degradation.
What will be an ideal response?