Which is the simplest of all levels of organization?

A. atom
B. cell
C. organ
D. organism
E. population


A. atom

Biology & Microbiology

You might also like to view...

Tetanus prevents the release of neurotransmitters from

A. muscle cells. B. excitatory neurons. C. inhibitory neurons. D. tetano cells.

Biology & Microbiology

Which reagent is used to test for the presence of starch?

a. I2KI b. Nile blue c. Ninhydrin d. Biuret

Biology & Microbiology

An allele is

a. the dominant form of a gene. b. an alternate form of a gene. c. always recessive. d. the main factor determining a trait. e. always one of a pair.

Biology & Microbiology

What evidence supports the idea that some nuclei are totipotent?

a. Nuclei taken from the cells of an embryonic frog can direct a frog egg to develop into a tadpole. b. Nuclei taken from the cells of a frog embryo can direct any amphibian egg to develop into a tadpole. c. Nuclei taken from a different species can direct a tadpole egg to develop into a normal tadpole. d. Some cells are capable of undergoing unlimited cell cycles.

e. Some cells are capable of arresting their cell cycle at will.

Biology & Microbiology