What purpose is served by dna ligase?

a. to break hydrogen bonds in the dna structure

b. to seal single stranded breaks in the dna double helices

c. to seal double stranded breaks in the dna single helices

d. all of these

e. none of these?

Why do individuals who suffer from brainstem injuries have difficulty with their autonomic functions?

What is the effect of a rise in income tax on the labor supply market? A) It decreases aggregate supply and potential GDP. B) It increases aggregate supply and potential GDP. C) It decreases aggregate supply, but does not affect GDP.

Summarize the difference between structuralism and functionalism.

Which of the following elements are considered to be the MOST highly reactive? A. an element with two electrons missing from its outer shell B. an element with a complete outer shell C. an element with one electron missing from its outer shell D.

Why will scientific models continue to improve

What building should represent the nucleus and why

The tundra is characterized by extremely low temperatures as well as little precipitation, a rocky landscape, and permafrost.

The postpartum client and her husband are excited about their new baby. however, they are also concerned about getting pregnant again too soon and ask about using birth control.

The R locus determines flower color in a new plant species. Plants that are genotype RR have red flowers, and plants that are rr have white flowers. However, Rr plants have pink flowers.

What's the difference between meiosis 1 and meiosis 2