Answer the following question given this paragraph: 30.5 Transport of Water and Solutes in Plants Water potential () is a measure of the difference in potential energy between a water sample and pure water. The water potential in plant solutions is influenced by solute concentration, pressure, gravity, and matric potential. Water potential and transpiration influence how water is transported through the xylem in plants. These processes are regulated by stomatal opening and closing. Photosynthates (mainly sucrose) move from sources to sinks through the plant's phloem. Sucrose is actively loaded into the sieve-tube elements of the phloem. The increased solute concentration causes water to move by osmosis from the xylem into the phloem. The positive pressure that is produced pushes water and solutes down the pressure gradient. The sucrose is unloaded into the sink, and the water returns to the xylem vessels. Q: Transport of water and solutes in plants water potential is a measure of the difference in potential energy between a water sample and this? Choices: - green water - dirty water - salty water - pure water A:
pure water
Answer the following question given this paragraph: A: During the day, thermal energy is transferred from the air over the land to the air over the water. During the night, thermal energy is transferred in the opposite direction. Q: During the day, what type of energy is transferred from the air over the land to the air over the water? Choices: - magnetic - atmospheric - nuclear - thermal A:
thermal
Q: Answer the following question given this paragraph: Muscles That Move the Tongue Although the tongue is obviously important for tasting food, it is also necessary for mastication, deglutition (swallowing), and speech (Figure 11.11 and Figure 11.12). Because it is so moveable, the tongue facilitates complex speech patterns and sounds. Q: Besides tasting food, what organ is necessary for mastication, deglutition (swallowing), and speech? Choices: - throat - larnyx - mouth - tongue A:
A: tongue
Question: Answer the following question given this paragraph: Adrenaline, or epinephrine, is a hormone and a neurotransmitter. It increases heart rate, constricts blood vessels, dilates air passages, and participates in the fight-or-flight response of the sympathetic nervous system. Adrenaline is produced in the adrenal medulla of the adrenal gland. So how does it effect processes all over the body?. Q: What neurotransmitter is associated with the fight-or-flight response? Choices: - stomach acid - bile - endorphins - adrenaline A:
Answer: adrenaline
*Question*
Answer the following question given this paragraph: Q: Some membranes have what kind of surfaces exposed to the cytoplasm? Choices: - outer - obstructionary - bilayer - hydrophobic A:
**Answer**
hydrophobic
(Question)
Answer the following question given this paragraph: In the picture above, a thermal pack is applied to the back. Small packs can be used either for heating or cooling, depending on the material used. A heat pack contains a supersaturated solution of material such as sodium acetate. The solution is clear until a small metal trigger is activated. The sodium acetate then crystallizes out of solution and generates heat in the process. Q: Where can you find sodium acetate? Choices: - table salt - baking soda - a cold pack - a heat pack A:
(Answer)
a heat pack