What helps substances cross the cell membrane during facilitated diffusion? Choose 1
Cholesterol
B
Carbohydrates
Proteins
D
Water

What is the term for the two sets of chromatids formed in the parent cell a.haploid b.diploid c.gamete d.tetrad

Jason adds the antibiotic penicillin to a bacterial culture. the bacteria develop genetic modifications in their genome, which gives them resistance to the antibiotic penicillin. what caused this genetic modification?

If a strand of dna has 35% thymine. what is the percentage of cytosine, adenine, guanine?