What cell doesn't have a cell wall?

A. Animal

B. Plant

Which phrase defines a community? Environment where nonliving things exist group of the same species that live together group of several populations living in an area environment where living and nonliving things interact

10. In the water cycle, liquid changes to gas by O precipitation O condensation evaporation O freezing

The genome of Drosophila melanogaster, a fruit fly, was sequenced in 2000. However, this sequence consisted mainly of euchromatin. The heterochromatin was not sequenced until 2007. Most completed genome sequences do not include heterochromatin.

When scientists raise newly hatched birds that have lost their parents, the scientists often use puppet-like devices to feed and care for the young birds. These puppet-like devices look like adult birds of the same species as the newly hatched birds.

What is the main feature that distinguishes bacteria cells from cells of other organisms?

Many mutations have been identified in the lac operon. A particular mutation prevents the repressor protein from binding to the operator under all circumstances.

What is the independent variable in this experiment? A) temperature B) Number of chirps C) Number of crickets D) Location of the laboratory

The parents of a client with a mental illness being cared for at home tell the nurse that they have been feeling overwhelmed lately. they say, "we need to get away for a few days to recharge ourselves.

Explain how the conversion of wetlands to farmland has impacted streams and rivers.

What type of bond links monomers together to form polymers? using the analogy of a train, if cars represent amino acids, what does the entire train represent?