input: OPTIONS:
- their habitat
- predators
- competition and chaos
- the external environment Now, answer this question: Answer the following question given this paragraph: Cells share the same needs: the need to get energy from their environment, the need to respond to their environment, and the need to reproduce. Cells must also be able to separate their relatively stable interior from the ever-changing external environment. They do this by coordinating many processes that are carried out within organelles, or other cellular structures. Structures that are common to many different cells indicate the common history shared by cell-based life. Examples of these common structures include the components of both the cell (or plasma) membrane and the cytoskeleton, and other structures shown in Figure above . Q: Cells must also be able to separate their relatively stable interior from what? A:
A:
output: the external environment

Answer the following question given this paragraph: Q: Which plants sometimes colonize areas by disrupting interactions between native organisms? A:

OPTIONS:
- carnivorous exotic plants
- denser exotic plants
- bacteria exotic plants
- invasive exotic plants

Answer: invasive exotic plants

Problem: OPTIONS:
- neuron
- mucus
- cerebellum
- cytoplasm
Q: Answer the following question given this paragraph: Bacteria lack many of the structures that eukaryotic cells contain. For example, they don't have a nucleus. They also lack membrane-bound organelles, such as mitochondria or chloroplasts. The DNA of a bacterial cell is also different from a eukaryotic cell. Bacterial DNA is contained in one circular chromosome, located in the cytoplasm. Eukaryotes have several linear chromosomes. Bacteria also have two additional unique features: a cell wall and flagella. Q: Bacterial dna is contained in one circular chromosome, located where? A:
Answer: cytoplasm

Problem:OPTIONS:
- microvilli
- tentacles
- sporangia
- flagella

Answer the following question given this paragraph: Flagella ( flagellum , singular) are long, thin structures that protrude from the cell membrane. Both eukaryotic and prokaryotic cells can have flagella. Flagella help single-celled organisms move or swim towards food. The flagella of eukaryotic cells are normally used for movement too, such as in the movement of sperm cells, which have only a single flagellum. The flagella of either group are very different from each other. Prokaryotic flagella, shown in Figure below , are spiral-shaped and stiff. They spin around in a fixed base much like a screw does, which moves the cell in a tumbling fashion. Eukaryotic flagella are made of microtubules that bend and flex like a whip. Q: What are the long, thin structures that protrude from the cell membrane and help single-celled organisms move or swim towards food? A:
****
A: flagella

Answer the following question given this paragraph: The axes of rotation of the planets are mostly nearly perpendicular to the orbital plane. Q: How do planets usually rotate to their orbital planes? A:
OPTIONS:
- exactly perpendicular
- chaotic
- randomly
- nearly perpendicular
nearly perpendicular

Answer the following question given this paragraph: Decomposers release nutrients when they break down dead organisms. Q: What do decomposers release when they break down dead organisms? A:
OPTIONS:
- methane
- carbon dioxide
- acids
- nutrients

Answer:
nutrients