What is an important characteristic of the plant cell wall?
a. it is fluid.
b. it is rigid.
c. it is alive.
d. it stretches. user: what is the function of the cholesterol molecules in a cell membrane?
a. they make it thicker.
b. they make it porous.
c. they make it more fluid.
d. they make it less flexible.

Twind is considered to be an abiotic factor because it.?

Plz genetic engineering can be applied to many fields including medicine and agriculture. which of the following is a medical application of genetic engineering? a. giving crop plants recombinant dna so that they would be resistant to herbicides. b. examining a persons pedigree to determine whether they can carry a gene for a genetic disease. c. analyzing a persons dna to see how closely they are related to another person. d. certain genes into bacteria so that they will produce a needed medicine.

Donde se encuentra el adn nuclear en un organismo eucariota?