HELP A cell needs to take up K+ ions, the concentration of Na+ outside the cell is 100 ppm, and inside the cell it is 75 ppm. Which type of transport will it use?
A. Active Transport
B. Particle Transport
C. Phospholipid Regulated Transport
D. Passive Transport

All living organisms are composed of a. only one cell. b. at least 100 cells. c. at least three cells. d. one or more cells.

Y’all i need answers plss people are saying me and my brother look alike although we’re two different ages. one year apart i’m a girl, btw i’m thinking we could be fraternal twins idk my parents and my friends think we look alike

Dna has unique properties that allow it to accurately retain genetic information, even after multiple rounds of replication. one aspect of dna that allows it to accurately store genetic information is the base pairing from chargaff\'s first rule of the four nucleotide bases. if the c content of a dna molecule is 22%, what are the percentages of the remaining bases?