Prokaryotic lack which of the following?
Ribosome
Cytoplasm
Nucleus
Cell Membrane

Which property is used to identify the origin of an igneous rock? color density hardness crystal size

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 is an important function of normal flora? a. aid with bone marrow production. b. crowd out pathogenic bacteria. c. destroy digestive track pathogens. d. manufacture iron in the bloodstream.