A type of cell which contains genetic material within the confines of a membrane-enclosed nucleus

Twenty-three is the haploid number of chromosomes in humans. True False

Sunlight is a form of energy called electromagnetic energy nuclear energy hydroenergy magnetic energy

A student wants to answer the question "Does adding calcium powder to soil make pea plants grow faster?" She adds calcium powder to the soil of 12 plants and does not add it to the soil of a second group of 12 plants.

How do animals and plants depend on each other?

If a strand of DNA that is not a replicon enters a bacterial cell: A. it will be replicated as a separate piece of DNA by DNA Polymerase B. it will circularize and form a plasmid to remain a stable functional DNA C.

What organic compound makes up the major portion of the cell membrane? A. protein B. lipid C. carbohydrate

What would you hypothesize about changes in albedo as a result of the loss of mosses and lichen and gain in cyanobacteria?

What are three meathods of CO2 transport in the blood?

Does the sun heat the earth's surface evenly? explain your answer

What structure modifies proteins and packages them for distribution from the cell