4. what type of charge does a
proton have?

Positive charge of 1

Explanation: This is because it is believed that it is from the charge of the quarks that make up the nucleons which are protons and neutrons.

+1

Explanation: A proton has a positive charge of one, an electron has a negative charge of one, and a neutron, like the name implies, has a neutral charge.

You can remember that the proton is positive because proton and positive both start with p.

the answer is b.) hydrogen bonds between bases.

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.