Which enzyme in

e. coli is responsible for relieving the tension ahead of the fork that results when the dna unwinds to form the replication "bubble" or "eye"?

Which statement is not part of the cell theory a - cells may vary in size but have the same shape b-all organisms are made of cells c - all cells carry their own life activities d - new cells arise only from other living cells

The overall population of a species decreased. What could have occurred to make this happen?

Lichens are among the slowest-growing organisms, but their tolerance of environmental extremes enables them to colonize habitats where few other macroscopic organisms can grow.

Where are chlorophyll molecules located within the chloroplasts?

What are motor proteins? Give 2 examples and describe how they contribute to: 1) directed movement of vesicles in protein transport 2) muscle contraction of skeletal muscle

How is parenting a lifelong job? Explain.

Frontal precipitation is most characteristic of the middle latitudes. frontal precipitation is most characteristic of the middle latitudes. a. True b. False

The offspring of two koalas develops a genetic disease. When scientists studied the parents' DNA, they found that both parents carried harmful recessive genes passed down from the exact same lineage.

On which of the following objects, all sitting on the ground together, does Earth exert a greater gravitational pull than a baseball? Check all that apply. A. A pencil B. An inflatable beach ball C. A truck D. A bicycle E. A camel

A patient with a personality disorder has unreasonable fears of abandonment, criticism, and rejection. what central issue of personality is distorted in this patient?