The most reliable source of vitamin b12 for the vegan would be

The four organisms illustrated are all capable of various forms of asexual reproduction. What processes, involving DNA and RNA, are necessary for all four of these organisms to successfully make replicas of themselves? a.

Which of the following includes all the others inside it? a. plasmid c. foreign gene b. transformed bacterium d. recombinant DNA

Explain the effect salinity and temperature have on water density.

During translation a peptide bond forms between the R group of a. the first amino acid and the carboxyl group of the second amino acid. b. the central B-carbon of the first amino acid and the amino group of the second amino acid. c.

What is the cellular process that begins with the breakdown of organic compounds (such as glucose) and continues with turning the resulting pyruvic acid into a waste product and two molecules of ATP

Which of the following pairs are isotopes of the same element

A farmer cut a branch from his favorite, mature fruit tree, planted it in the soil, and it grew to be a new tree. The farmer's method of growing a new plant is a type of A) pollination. B) seed production. C) sexual reproduction.

is the net movement of molecules or ions from a region of higher concentration to a region of lower concentration brought about by the energy of the molecules

Which is closer to the Earth? the Sun or the outer planets?

Which term means a red blood cell? Erythrocyte leukocyte microcyte phagocyte?