Problem: OPTIONS:
- euglenozoa
- sporozoans
- mycetozoa
- alveolates
Q: Q: What are a group of protists whose monophyly is well supported by molecular systematics? A:
Answer: alveolates

Problem:OPTIONS:
- calcium
- plasma
- potassium
- hemoglobin

Q: Despite its small size, an erythrocyte contains about 250 million molecules of what? A:
****
A: hemoglobin

Q: With codominance, both alleles are expressed equally in what? A:
OPTIONS:
- homozygotes
- prokaryotes
- gametes
- heterozygotes
heterozygotes

Q: What are the newest, outer layers of secondary xylem called? A:
OPTIONS:
- bark
- fibrous
- vascular
- sapwood

Answer: sapwood

Question: Q: Silk and cotton are examples of what type of fibers? A:
OPTIONS:
- mechanical
- artificial
- coral
- natural
Answer: natural

input: OPTIONS:
- protons
- electrons
- molecules
- neutrons Now, answer this question: Q: Heavier isotopes of plutonium are also produced when lighter plutonium nuclei capture what? A:
A:
output:
neutrons