Answer:
b and idk how to explain it sorry i just know the answer my aunt is a doctor
Explanation:
Answer:
Forms of passage of substances across the blood–brain barrier. (A) Passive diffusion: fat-soluble substances dissolve in the cell membrane and cross the barrier (e.g., alcohol, nicotine and caffeine). Water-soluble substances such as penicillin have difficulty in getting through.
Answer:
22 homologous
Explanation:
a normal human male would have 22 homologous
1. Vocational
2. physical
3. Social