2. Deuterium is an isotope of hydrogen. It has a mass number of two. Which describes a deuterium atom? a nucleus of one proton and one neutron, which is orbited by one electron b. a nucleus of one proton, which is orbited by one neutron and one electron c. nucleus of one neutron, which is orbited by one electron d. a nucleus of two neutrons which is orbited by two electrons

Differentiation of cells changes the nucleic information. true false

The finches on the galapagos island were similar in form except for variations of their beaks. darwin observed that these variations were useful for: attracting a mate defending territory building nests gathering food

Which statements about the fluid mosaic structure of a membrane are correct? select the three correct statements.which statements about the fluid mosaic structure of a membrane are correct? select the three correct statements.the framework of a membrane is a bilayer of phospholipids with their hydrophilic heads facing the aqueous environment inside and outside of the cell and their hydrophobic tails clustered in the center.because membranes are fluid, membrane proteins and phospholipids can drift about in the membrane.the diverse proteins found in and attached to membranes perform many important functions.the kinky tails of some proteins keep the membrane fluid by preventing the component molecules from packing solidly together.membranes include a mosaic, or mix, of carbohydrates embedded in a phospholipid bilayer.