Q: Q: Which organ system defends the body from pathogens and other causes of disease? A:

OPTIONS:
- digestion system
- nervous system
- respiratory system
- immune system

A: immune system

input: OPTIONS:
- nutrients
- area
- parasites
- species Now, answer this question: Q: Many organisms look very similar to other organisms because they may be from the same what? A:
A:
output: species

Q: Chloroplasts, chromoplasts, and leucoplasts are all plastids, organelles found in what kind of cells? A:

OPTIONS:
- animal cells
- lung cells
- heart cells
- plant cells

Answer: plant cells

Problem: OPTIONS:
- volume
- height
- circumference
- area
Q: Q: The length of a rectangular surface multiplied by its width is equal to what? A:
Answer: area

Problem:OPTIONS:
- done limit
- crippling limit
- such limit
- no limit

Q: All alkanes are composed of carbon and hydrogen atoms, and have similar bonds, structures, and formulas; noncyclic alkanes all have a formula of cnh2n+2. the number of carbon atoms present in an alkane has what? A:
****
A: no limit

Problem:OPTIONS:
- protein
- digestion
- chlorophyll
- dna

Q: What mechanism is used by living organisms to pass along genes? A:
****
A:
dna