Which is true of intercellular organisms signals do not go through direct connections between cells, such as gap junctions (a. they either match up with a receptor molecule on the surface of the cell or enter the cell through the membrane) (b. the carbohydrate tag is interpreted in the ribosomes, and the signal is passed on to the nucleus of the cell) (c. they connect with another cell partm such as the golgi apparatus, where hormones interpret the signal) (d. they connect with an adjacent cell where an ion linked receptor carries them into the nucleus)

When does dna replication(make a copy of itself)?

Witch type of microscope is used to view very small cell components like proteins and dna?

Humans are believed to have evolved in coastal regions in east africa. the region had an abundant supply of fish for early humanoids to eat. when scientists analyze the fads gene they see an interesting pattern. people whose families have lived in this area of east africa for generation show a high level of diversity in alleles for the fads gene. conversely, people whose families had migrated inland a moderate distance from sources of fish showed a much lower diversity for fads gene alleles. additionally, the fads alleles found in people whose family has lived inland for generation are almost all gene alleles which produce fads proteins with a high level of function and activity. how do anthropologists explain this?