What is the unit for frequency?

When was the last epoch in which organisms could start walking across the Bering Strait and Panama Canal? Pliocene Pleistocene Holocene Eocene

Muscle cells differ from nerve cells mainly because they Muscle cells differ from nerve cells mainly because they contain different genes. express different genes. have different chromosomes. have unique ribosomes. use different genetic codes.

The primary structure of a protein involves: a. hydrogen bonds only b. "R" group interactions c. hydrophobic forces d. peptide bonds only e. disulfide bonds only

Which organelle can be compared to a security guard who decides whom may enter a building and whom may not

What is a non vascular plant or a seedless plant

Which property of argon makes it useful for potassium-argon dating? It decays into potassium. It is an unstable element. It remains trapped in rock. It is useful only for dating newer roc

Trace the path of groundwater from soil to the ocean, using either a written description

How are highly folded membranes an advantage for the functions of cellular parts? Name an organelle that has highly folded membranes.

What is the unit for frequency?

Things in an experiment that may influence your data