Do prokaryotic cells have a nucleus covered by membranes?

A model of cell division is shown here. A student evaluates the model and makes the claim that the cell division increases genetic variation in the daughter cells.

In what process do bacteria break nitrogen gas down into a usable form for plants? A. fission B. decomposition C. conjugation D. nitro fixation

A farmer applies excess fertilizer to one of her fields just before a rainstorm. What kind of pollution is this most likely to lead to?

What is the composition of the most abundant mineral compounds on earth? A) Oxalates, oxygen, and one or more organic compounds B) Oxygen, sulfates, and one or more nonmetals C) Carbonates, oxyen, and one or more organic compounds D) Silicon,

All of the following are a source of carbon in the carbon cycle except: the sun sediment animals fossil fuels

A birthing couple informs the nurse that they would like to have the placenta after the baby is born. what is the nurse's best response?

Descriptive relativism necessarily implies metaethical relativism. a. True b. False

Identify the products in this reaction: 6HO+6CO+CHO+6O

Define metabolism and explain why cells need to synthesize new organic components

Astronomers believe distant planet could be 'more hospitable' than earth. true or false