Problem:OPTIONS:
- prokaryotes
- algae
- arthropods
- protists

Q: What produces almost one-half of the earth's oxygen through photosynthesis? A:
****
A: protists

Q: Another unit of energy, used widely in the health professions and everyday life, is _______? A:
OPTIONS:
- carbs
- body index
- biomass ( cal )
- calorie ( cal )
calorie ( cal )

Q: What are all of the digits that can be known with certainty in a measurement plus an estimatied last digit called? A:
OPTIONS:
- determined figures
- important figures
- miniature figures
- significant figures

Answer: significant figures

Question: Q: The transmission electron micrograph shows the cell walls where two cells do what? A:
OPTIONS:
- split apart
- reproduce
- disappear
- come together
Answer: come together

input with options: Q: What occurs when hot magma transforms rock that it contacts? A:
OPTIONS:
- existence metamorphism
- form metamorphism
- changing metamorphism
- contact metamorphism
output: contact metamorphism

Problem: OPTIONS:
- the lungs
- the heart
- the kidneys
- the brain stem
Q: Q: What monitors the level of carbon dioxide in the blood? A:
Answer:
the brain stem