Answer the following question given this paragraph: Abscisic acid is misnamed because it was once believed to play a role in abscission (the dropping of leaves, fruits, and flowers), but we now know abscission is caused by ethylene. The actual role of abscisic acid is to close the stomata, the tiny openings in leaves that allow substances to enter and leave, and to maintain dormancy. When a plant is stressed due to lack of water, abscisic acid tells the stomata to close. This prevents water loss through the stomata. Q: What is the scientific term for the dropping of leaves, fruits, and flowers, which led to the naming of an acid thought to play a role in the process? Choices: - ascorbition - affixation - ablation - abscission A:
abscission
Answer the following question given this paragraph: "Neon" signs are familiar examples of gas discharge tubes. However, only signs that glow with the red-orange color seen in the figure are actually filled with neon. Signs of other colors contain different gases or mixtures of gases. Q: What colors in a neon sign represent real neon? Choices: - purple, blue - blue, green - yellow, white - red, orange A:
red, orange
Q: Answer the following question given this paragraph: Magma that cools underground forms intrusions ( Figure below ). Intrusions become land formations if they are exposed at the surface by erosion. Q: What does magma that cools underground form? Choices: - chambers - new crust - fluctuations - instrusions A:
A: instrusions
Question: Answer the following question given this paragraph: Gene expression is regulated primarily at the transcriptional level. Q: Gene expression is regulated primarily at the what level? Choices: - manufacturing - translational - binding - transcriptional A:
Answer: transcriptional
*Question*
Answer the following question given this paragraph: Polar climates include polar and alpine tundra. Polar Tundra in Northern Alaska (70 N latitude), Alpine Tundra in the Colorado Rockies (40 N latitude). Q: Polar climates include polar and which other kind of tundra? Choices: - mountains - arid - tropic - alpine A:
**Answer**
alpine
*Question*
Answer the following question given this paragraph: A space station was established far from the gravitational field of Earth. Extended stays in zero gravity are not healthy for human beings. Thus, for the comfort of the astronauts, the station is rotated so that the astronauts feel there is an internal gravity. The rotation speed is such that the apparent acceleration of gravity is . The direction of rotation is counter-clockwise. If the radius of the station is , what is its rotational speed, ?. Q: Extended stays in zero gravity are not healthy for human beings. thus, for the comfort of the astronauts, the station is rotated so that the astronauts feel there is what? Choices: - revealed gravity - still gravity - Fixed Gravity - internal gravity A:
**Answer**
internal gravity