Problem: OPTIONS:
- periosteum
- chlorophyll
- mitochondria
- mesophyll
Q: Q: What consists mainly of parenchymal cells with chloroplasts? A:
Answer: mesophyll
Problem: OPTIONS:
- actins
- hormones
- keratins
- titins
Q: Q: What are the largest known proteins? A:
Answer: titins
Problem: OPTIONS:
- strengthen
- weaken
- repel
- attract
Q: Q: What do opposite charges do to one another? A:
Answer:
attract