Cells are organized into tissues that perform specialized tasks and tissues, in turn, are grouped together to form whole organs. a. true b. false

Which plant has a visible leaf modification that will it conserve water in extremely dry environments?

Which of the following statements about archaea and bacteria is true? a. neither is single-celled. b. they both have nuclear membranes. c. neither reproduces by binary fission. d. they both lack a nuclear membrane.

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes