Can anyone me with this biology question? living systems are made of complex molecules including carbohydrates, fats, proteins, and nucleic acids. even though there are more than 100 elements known to exist, these molecules are comprised of only a few elements. what are these elements? *a. sodium, potassium, calcium, nitrogen, phosphorus, sulfurb. carbon, hydrogen, oxygen, nitrogen, sulfur and phosphorusc. carbon, hydrogen, oxygen, fluorine, chlorine, iodined. fluorine, chlorine, iodine, nitrogen, phosphorus, sulfur

Growth of chest hair, deepening of the voice, and muscle growth are secondary sex characteristics. which most likely affects the development of these traits? testes ovaries prostate gland vulva

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.

The distant ancestors of tigers may have had bodies without stripes. use the theory of natural selection to explain how tigers may have evolved to have stripes.