Question:
Genetically modified plants with new characteristics have been produced through genetic engineering methods. What impacts have resulted from the use of genetically modified plants?
OPTIONS:
- decreases in farm production
- decreases in corn, soybean, cottonseed, and canola oils
- increases in time required to plant, grow, and harvest crops
- increases in resistance to herbicides, insects, and viral diseases
Answer:
increases in resistance to herbicides, insects, and viral diseases
Question:
A group of students found metamorphic rocks near a campsite. The presence of metamorphic rocks is most likely evidence of
OPTIONS:
- dinosaur activity
- sediment deposition
- high pressure
- wind-borne sand
Answer:
high pressure
Question:
Which of the following is formed when two elements combine chemically?
OPTIONS:
- an atom
- a compound
- an electron
- a mixture
Answer:
a compound
Question:
A single prokaryotic cell can divide several times in an hour. Few eukaryotic cells can divide as quickly. Which of the following statements best explains this difference?
OPTIONS:
- Eukaryotic cells are smaller than prokaryotic cells.
- Eukaryotic cells have less DNA than prokaryotic cells.
- Eukaryotic cells have more cell walls than prokaryotic cells.
- Eukaryotic cells are more structurally complex than prokaryotic cells.
Answer:
Eukaryotic cells are more structurally complex than prokaryotic cells.