Because of base pairing in DNA, the percentage of a. adenine molecules in DNA is about equal to the percentage
of guanine molecules.
b. thymine molecules in DNA is about equal to the percentage of adenine molecules
c. adenine molecules in DNA is much greater than the percentage of thymine molecules.
d. cytosine molecules in DNA is much greater than the percentage of guanine molecules.

Dr. bad has developed a way to damage the atp-binding cassette transporter (abc transporter) on a cell. the cell's abc transporter can no longer bind and use atp when it's transporting substances. which of the following statements best describes how this damage would effect the transport of substances in the affected cell? (choice a) substances at a low concentration outside the cell would be more rapidly transported into the cell, where there is a high concentration. (choice b) substances at a high concentration outside the cell would not be transported into the cell, where there is a low concentration. (choice c) equilibrium would be established between all substances inside and outside of the cell. (choice d) substances at a low concentration outside the cell would not be transported into the cell, where there is a high concentration.

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

Which spheres are involved when sedimentary rocks formed from parts of seashells at the bottom of the ocean? a.) biosphere, atmosphere, geosphereb.) geosphere, hydrosphere, biosphere c.) geosphere, exosphere, hydrosphered.) hydrosphere, biosphere, atmosphere