The cessation of smoking may do all of the following EXCEPT
a. can reduce the risk of stillbirth.
b. reduces the chances of cancer.
c. reduces the chances of coronary disease.
d. improves lung functioning.
e. increase chances of sleep apnea.
E
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True or false: The sequence of amino acids in a protein is referred to as its primary structure
A. true B. false
As DNA is being replicated, new nucleotides are covalently bonded to the _____of the growing strand
1.free hydroxyl group on the deoxyribose of the 3' end 2.free hydroxyl group on the deoxyribose of the 5' end 3.nitrogenous base of the last nucleotide on the 3' end 4.nitrogenous base of the last nucleotide on the 5' end 5.free hydroxyl group on the ribose of the 3' end
A gene is
A) a stretch of DNA coding for a polypeptide chain (sequence of amino acids). B) a microscopic, threadlike body within a cell. C) any heritable behavioral, morphological, or physiological trait of an organism. D) all of the DNA in a cell.
Cells that are terminally differentiated ______________________
(a) will undergo apoptosis within a few days. (b) can no longer undergo cell division. (c) are unable to move. (d) no longer produce RNAs.