In DNA, complementary nitrogen bases are held together by
A. nitrogen bonds.
B. hydrogen bonds.
C. hydrophobic bonds.
D. peptide bonds.
E. phosphodiester bonds.
B. hydrogen bonds.
You might also like to view...
Which disease test will show a false positive when immunized with the BCG attenuated virus?
A) tuberculosis B) whooping cough C) diphtheria D) pneumococcal pneumonia
As part of the inflammatory response, _____ engulf and destroy invading bacteria
a. histamines b. dead skin cells c. mast cells d. macrophages e. antibodies
More than 60% of all prescribed drugs target ____, due to their wide physiological impact
a. receptor tyrosine kinases b. hormone receptors c. guanylyl cyclase d. ligand-gated ion channels e. G-protein-coupled receptors
In the root apical meristem, __________ supports division of undifferentiated meristem cells, and cytokinin signals
the cells to differentiate. Fill in the blank(s) with the appropriate word(s).