Select the feature that best describes cell membranes helps cell move through fluid habitats
b.
physically separates an external environment from an internal one
c.
contains ribosomes
d.
involved in binding to signaling molecules

List the advantages and disadavantages of the switch from persistent chlorinated hydrocarbon pesticides (such as ddt) to nonpersistent organophosphate pesicides. have the benefits of the switch outweighed the disadvantages? explain.

When proteins are being produced by a cell, scientist say that the genes are question 2 options: activated turned off replicated deactivated

What is genetic variation? -(a) each individual in a population has slightly different genes. -(b) some individuals in a population have more genes than others. -(c) each population of a species has slightly different genes. -(d)some populations of a species have more genes than others.