Plant cell Animal cell
2. Have a cell membrane. 2. Have no chloroplasts.
3. Have cytoplasm. 3. Have only small vacuoles.
4. Have a nucleus. 4. Often irregular in shape.
5. Often have chloroplasts containing chlorophyll. 5. Do not contain plastids.
Answer:
secondary structure ... hydrogen bonds...
Explanation: Some regions of a polypeptide may coil or fold back on themselves. This is called secondary structure, and the coils or folds are held in place by hydrogen bonds.
A pap test is a screening test that can detect pre-cancerous and cancerous cells and processes in an important part of the female reproductive system, the cervix. It is at the secondary level of preventative care, because it screens asymptomatic individuals to detect as soon as possible a serious disease.
