Is 2$ a month. Why does it say I will be billed 24$

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.

the answers are as following:

1. c. double helix, nucleosome, coil, supercoil, chromosome

2. b. g2 phase, preparation for mitosis

3. d. interphase consists of the g1, s, and g2 phases

4. c. metaphase

5. a. chromosomes are duplicated before cell division so that each new daughter cell has a complete set

it's diluted or concentrated

in a diluted solution, you can add a lot more solute but in concentrated only a little more can be added

examples of nucleic acids are deoxyribonucleic acid (dna) and ribonucleic acid (rna).