On a phylogenetic tree, what do the branch lengths represent?

The age of the organisms

amount of genetic change since divergence

amount of genetic change since convergence

The age of divergence

Suppose a scientist has found a new type of cell. The scientist notes that the cell has a membrane, a nucleus, cytoplasm, and ribosomes. Is this new type of cell prokaryotic or eukaryotic? How do you know?

Explain the functions of electrons, hydrogen ions, and oxygen in the electron transport chain.

Which instrument is related to the modern trombone?

Which type of cnidarian does not have a nervous system? a. Corals c. Jellyfish b. Sponges d. Anemones

How was viscosity measured in the "Viscosity" lab? A: indirectly by measuring the volume of honey B: indirectly by measuring the distance a liquid flowed in a given time C: directly with a spring scale D: directly with a viscosity meter

During transcription in eukaryotes, a type of RNA polymerase called RNA polymerase II moves along the template strand of the DNA in the 3'→5' direction.

A plant species live in an area with limited sunlight

Which statement is true of the nucleus of a cell

Until about 200 million years ago, Earth's continents were joined as a single land mass called A. Asia Minor. B. Pangaea. C. Glossopteris. D. Cynognathus.

How many cells does a fish have? Do they maintain homeostasis?