A closed or blocked reading frame is __________
a. one that can not be transcribed at all
b. a reading frame that is damaged and therefore can not be read
c. a reading frame that cannot be translated into protein because termination codons occur frequently
d. heterochromatin that can not be transcribed
e. None of the above
Ans: c
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the countercurrent heat exchanger that prevents the arterial blood from overheating the testes is__
Fill in the blank(s) with the appropriate word(s).
Which of the following is NOT an example of variation?
A) cats can have long or short fur B) both monocotyledons and dicotyledons perform the dark reaction C) a child does not have her mother's hair color D) giraffes have not been seen in an albino form E) lobsters can come in many colors including blue, read, and brown
Describe how the presence or absence of nucleosomes influences gene transcription
What will be an ideal response?
During your annual physical, a nurse takes your blood pressure by wrapping a sphygmomanometer cuff around your upper arm, which modulates the flow of blood through your brachial artery. The nurse then enters a reading of 115/70 in your medical chart. These numbers mean that the
A. pressure in your brachial artery during ventricular contraction is 115, while the pressure during ventricular relaxation is 70. B. nurse heard sounds through the stethoscope only when the pressure in your brachial artery was exactly 115 and again when it was exactly 70. C. diastolic pressure is 115 and the systolic pressure is 70. D. pressure in the ventricles of the heart is 115 when the ventricles are contracting and 70 when the ventricles are relaxing. E. pressure in your brachial artery during ventricular contraction is 115 while the pressure during atrial contraction is 70.